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authorMingming Cao <cmm@us.ibm.com>2006-10-11 04:20:59 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-11 14:14:15 -0400
commitf7f4bccb729844a0fa873e224e3a6f7eeed095bb (patch)
treeb5b8ce65b5c17b4a7d45e43a3530f2cc977fb894
parent470decc613ab2048b619a01028072d932d9086ee (diff)
[PATCH] jbd2: rename jbd2 symbols to avoid duplication of jbd symbols
Mingming Cao originally did this work, and Shaggy reproduced it using some scripts from her. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat
-rw-r--r--fs/jbd2/Makefile4
-rw-r--r--fs/jbd2/checkpoint.c54
-rw-r--r--fs/jbd2/commit.c122
-rw-r--r--fs/jbd2/journal.c454
-rw-r--r--fs/jbd2/recovery.c46
-rw-r--r--fs/jbd2/revoke.c146
-rw-r--r--fs/jbd2/transaction.c244
-rw-r--r--include/linux/ext4_jbd2.h26
-rw-r--r--include/linux/jbd2.h248
9 files changed, 672 insertions, 672 deletions
diff --git a/fs/jbd2/Makefile b/fs/jbd2/Makefile
index 54aca4868a36..802a3413872a 100644
--- a/fs/jbd2/Makefile
+++ b/fs/jbd2/Makefile
@@ -2,6 +2,6 @@
2# Makefile for the linux journaling routines. 2# Makefile for the linux journaling routines.
3# 3#
4 4
5obj-$(CONFIG_JBD) += jbd.o 5obj-$(CONFIG_JBD2) += jbd2.o
6 6
7jbd-objs := transaction.o commit.o recovery.o checkpoint.o revoke.o journal.o 7jbd2-objs := transaction.o commit.o recovery.o checkpoint.o revoke.o journal.o
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index 0208cc7ac5d0..68039fa9a566 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -19,7 +19,7 @@
19 19
20#include <linux/time.h> 20#include <linux/time.h>
21#include <linux/fs.h> 21#include <linux/fs.h>
22#include <linux/jbd.h> 22#include <linux/jbd2.h>
23#include <linux/errno.h> 23#include <linux/errno.h>
24#include <linux/slab.h> 24#include <linux/slab.h>
25 25
@@ -95,9 +95,9 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
95 95
96 if (jh->b_jlist == BJ_None && !buffer_locked(bh) && !buffer_dirty(bh)) { 96 if (jh->b_jlist == BJ_None && !buffer_locked(bh) && !buffer_dirty(bh)) {
97 JBUFFER_TRACE(jh, "remove from checkpoint list"); 97 JBUFFER_TRACE(jh, "remove from checkpoint list");
98 ret = __journal_remove_checkpoint(jh) + 1; 98 ret = __jbd2_journal_remove_checkpoint(jh) + 1;
99 jbd_unlock_bh_state(bh); 99 jbd_unlock_bh_state(bh);
100 journal_remove_journal_head(bh); 100 jbd2_journal_remove_journal_head(bh);
101 BUFFER_TRACE(bh, "release"); 101 BUFFER_TRACE(bh, "release");
102 __brelse(bh); 102 __brelse(bh);
103 } else { 103 } else {
@@ -107,19 +107,19 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
107} 107}
108 108
109/* 109/*
110 * __log_wait_for_space: wait until there is space in the journal. 110 * __jbd2_log_wait_for_space: wait until there is space in the journal.
111 * 111 *
112 * Called under j-state_lock *only*. It will be unlocked if we have to wait 112 * Called under j-state_lock *only*. It will be unlocked if we have to wait
113 * for a checkpoint to free up some space in the log. 113 * for a checkpoint to free up some space in the log.
114 */ 114 */
115void __log_wait_for_space(journal_t *journal) 115void __jbd2_log_wait_for_space(journal_t *journal)
116{ 116{
117 int nblocks; 117 int nblocks;
118 assert_spin_locked(&journal->j_state_lock); 118 assert_spin_locked(&journal->j_state_lock);
119 119
120 nblocks = jbd_space_needed(journal); 120 nblocks = jbd_space_needed(journal);
121 while (__log_space_left(journal) < nblocks) { 121 while (__jbd2_log_space_left(journal) < nblocks) {
122 if (journal->j_flags & JFS_ABORT) 122 if (journal->j_flags & JBD2_ABORT)
123 return; 123 return;
124 spin_unlock(&journal->j_state_lock); 124 spin_unlock(&journal->j_state_lock);
125 mutex_lock(&journal->j_checkpoint_mutex); 125 mutex_lock(&journal->j_checkpoint_mutex);
@@ -130,9 +130,9 @@ void __log_wait_for_space(journal_t *journal)
130 */ 130 */
131 spin_lock(&journal->j_state_lock); 131 spin_lock(&journal->j_state_lock);
132 nblocks = jbd_space_needed(journal); 132 nblocks = jbd_space_needed(journal);
133 if (__log_space_left(journal) < nblocks) { 133 if (__jbd2_log_space_left(journal) < nblocks) {
134 spin_unlock(&journal->j_state_lock); 134 spin_unlock(&journal->j_state_lock);
135 log_do_checkpoint(journal); 135 jbd2_log_do_checkpoint(journal);
136 spin_lock(&journal->j_state_lock); 136 spin_lock(&journal->j_state_lock);
137 } 137 }
138 mutex_unlock(&journal->j_checkpoint_mutex); 138 mutex_unlock(&journal->j_checkpoint_mutex);
@@ -198,9 +198,9 @@ restart:
198 * Now in whatever state the buffer currently is, we know that 198 * Now in whatever state the buffer currently is, we know that
199 * it has been written out and so we can drop it from the list 199 * it has been written out and so we can drop it from the list
200 */ 200 */
201 released = __journal_remove_checkpoint(jh); 201 released = __jbd2_journal_remove_checkpoint(jh);
202 jbd_unlock_bh_state(bh); 202 jbd_unlock_bh_state(bh);
203 journal_remove_journal_head(bh); 203 jbd2_journal_remove_journal_head(bh);
204 __brelse(bh); 204 __brelse(bh);
205 } 205 }
206} 206}
@@ -252,16 +252,16 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
252 252
253 spin_unlock(&journal->j_list_lock); 253 spin_unlock(&journal->j_list_lock);
254 jbd_unlock_bh_state(bh); 254 jbd_unlock_bh_state(bh);
255 log_start_commit(journal, tid); 255 jbd2_log_start_commit(journal, tid);
256 log_wait_commit(journal, tid); 256 jbd2_log_wait_commit(journal, tid);
257 ret = 1; 257 ret = 1;
258 } else if (!buffer_dirty(bh)) { 258 } else if (!buffer_dirty(bh)) {
259 J_ASSERT_JH(jh, !buffer_jbddirty(bh)); 259 J_ASSERT_JH(jh, !buffer_jbddirty(bh));
260 BUFFER_TRACE(bh, "remove from checkpoint"); 260 BUFFER_TRACE(bh, "remove from checkpoint");
261 __journal_remove_checkpoint(jh); 261 __jbd2_journal_remove_checkpoint(jh);
262 spin_unlock(&journal->j_list_lock); 262 spin_unlock(&journal->j_list_lock);
263 jbd_unlock_bh_state(bh); 263 jbd_unlock_bh_state(bh);
264 journal_remove_journal_head(bh); 264 jbd2_journal_remove_journal_head(bh);
265 __brelse(bh); 265 __brelse(bh);
266 ret = 1; 266 ret = 1;
267 } else { 267 } else {
@@ -296,7 +296,7 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
296 * 296 *
297 * The journal should be locked before calling this function. 297 * The journal should be locked before calling this function.
298 */ 298 */
299int log_do_checkpoint(journal_t *journal) 299int jbd2_log_do_checkpoint(journal_t *journal)
300{ 300{
301 transaction_t *transaction; 301 transaction_t *transaction;
302 tid_t this_tid; 302 tid_t this_tid;
@@ -309,7 +309,7 @@ int log_do_checkpoint(journal_t *journal)
309 * don't need checkpointing, just eliminate them from the 309 * don't need checkpointing, just eliminate them from the
310 * journal straight away. 310 * journal straight away.
311 */ 311 */
312 result = cleanup_journal_tail(journal); 312 result = jbd2_cleanup_journal_tail(journal);
313 jbd_debug(1, "cleanup_journal_tail returned %d\n", result); 313 jbd_debug(1, "cleanup_journal_tail returned %d\n", result);
314 if (result <= 0) 314 if (result <= 0)
315 return result; 315 return result;
@@ -374,7 +374,7 @@ restart:
374 } 374 }
375out: 375out:
376 spin_unlock(&journal->j_list_lock); 376 spin_unlock(&journal->j_list_lock);
377 result = cleanup_journal_tail(journal); 377 result = jbd2_cleanup_journal_tail(journal);
378 if (result < 0) 378 if (result < 0)
379 return result; 379 return result;
380 return 0; 380 return 0;
@@ -397,7 +397,7 @@ out:
397 * we have an abort error outstanding. 397 * we have an abort error outstanding.
398 */ 398 */
399 399
400int cleanup_journal_tail(journal_t *journal) 400int jbd2_cleanup_journal_tail(journal_t *journal)
401{ 401{
402 transaction_t * transaction; 402 transaction_t * transaction;
403 tid_t first_tid; 403 tid_t first_tid;
@@ -452,8 +452,8 @@ int cleanup_journal_tail(journal_t *journal)
452 journal->j_tail_sequence = first_tid; 452 journal->j_tail_sequence = first_tid;
453 journal->j_tail = blocknr; 453 journal->j_tail = blocknr;
454 spin_unlock(&journal->j_state_lock); 454 spin_unlock(&journal->j_state_lock);
455 if (!(journal->j_flags & JFS_ABORT)) 455 if (!(journal->j_flags & JBD2_ABORT))
456 journal_update_superblock(journal, 1); 456 jbd2_journal_update_superblock(journal, 1);
457 return 0; 457 return 0;
458} 458}
459 459
@@ -518,7 +518,7 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
518 * Returns number of buffers reaped (for debug) 518 * Returns number of buffers reaped (for debug)
519 */ 519 */
520 520
521int __journal_clean_checkpoint_list(journal_t *journal) 521int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
522{ 522{
523 transaction_t *transaction, *last_transaction, *next_transaction; 523 transaction_t *transaction, *last_transaction, *next_transaction;
524 int ret = 0; 524 int ret = 0;
@@ -578,7 +578,7 @@ out:
578 * This function is called with jbd_lock_bh_state(jh2bh(jh)) 578 * This function is called with jbd_lock_bh_state(jh2bh(jh))
579 */ 579 */
580 580
581int __journal_remove_checkpoint(struct journal_head *jh) 581int __jbd2_journal_remove_checkpoint(struct journal_head *jh)
582{ 582{
583 transaction_t *transaction; 583 transaction_t *transaction;
584 journal_t *journal; 584 journal_t *journal;
@@ -607,7 +607,7 @@ int __journal_remove_checkpoint(struct journal_head *jh)
607 * dropped! 607 * dropped!
608 * 608 *
609 * The locking here around j_committing_transaction is a bit sleazy. 609 * The locking here around j_committing_transaction is a bit sleazy.
610 * See the comment at the end of journal_commit_transaction(). 610 * See the comment at the end of jbd2_journal_commit_transaction().
611 */ 611 */
612 if (transaction == journal->j_committing_transaction) { 612 if (transaction == journal->j_committing_transaction) {
613 JBUFFER_TRACE(jh, "belongs to committing transaction"); 613 JBUFFER_TRACE(jh, "belongs to committing transaction");
@@ -617,7 +617,7 @@ int __journal_remove_checkpoint(struct journal_head *jh)
617 /* OK, that was the last buffer for the transaction: we can now 617 /* OK, that was the last buffer for the transaction: we can now
618 safely remove this transaction from the log */ 618 safely remove this transaction from the log */
619 619
620 __journal_drop_transaction(journal, transaction); 620 __jbd2_journal_drop_transaction(journal, transaction);
621 621
622 /* Just in case anybody was waiting for more transactions to be 622 /* Just in case anybody was waiting for more transactions to be
623 checkpointed... */ 623 checkpointed... */
@@ -636,7 +636,7 @@ out:
636 * Called with the journal locked. 636 * Called with the journal locked.
637 * Called with j_list_lock held. 637 * Called with j_list_lock held.
638 */ 638 */
639void __journal_insert_checkpoint(struct journal_head *jh, 639void __jbd2_journal_insert_checkpoint(struct journal_head *jh,
640 transaction_t *transaction) 640 transaction_t *transaction)
641{ 641{
642 JBUFFER_TRACE(jh, "entry"); 642 JBUFFER_TRACE(jh, "entry");
@@ -666,7 +666,7 @@ void __journal_insert_checkpoint(struct journal_head *jh,
666 * Called with j_list_lock held. 666 * Called with j_list_lock held.
667 */ 667 */
668 668
669void __journal_drop_transaction(journal_t *journal, transaction_t *transaction) 669void __jbd2_journal_drop_transaction(journal_t *journal, transaction_t *transaction)
670{ 670{
671 assert_spin_locked(&journal->j_list_lock); 671 assert_spin_locked(&journal->j_list_lock);
672 if (transaction->t_cpnext) { 672 if (transaction->t_cpnext) {
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 10be51290a27..b1a4eafc1541 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -1,5 +1,5 @@
1/* 1/*
2 * linux/fs/jbd/commit.c 2 * linux/fs/jbd2/commit.c
3 * 3 *
4 * Written by Stephen C. Tweedie <sct@redhat.com>, 1998 4 * Written by Stephen C. Tweedie <sct@redhat.com>, 1998
5 * 5 *
@@ -15,7 +15,7 @@
15 15
16#include <linux/time.h> 16#include <linux/time.h>
17#include <linux/fs.h> 17#include <linux/fs.h>
18#include <linux/jbd.h> 18#include <linux/jbd2.h>
19#include <linux/errno.h> 19#include <linux/errno.h>
20#include <linux/slab.h> 20#include <linux/slab.h>
21#include <linux/mm.h> 21#include <linux/mm.h>
@@ -111,7 +111,7 @@ static int journal_write_commit_record(journal_t *journal,
111 if (is_journal_aborted(journal)) 111 if (is_journal_aborted(journal))
112 return 0; 112 return 0;
113 113
114 descriptor = journal_get_descriptor_buffer(journal); 114 descriptor = jbd2_journal_get_descriptor_buffer(journal);
115 if (!descriptor) 115 if (!descriptor)
116 return 1; 116 return 1;
117 117
@@ -120,14 +120,14 @@ static int journal_write_commit_record(journal_t *journal,
120 /* AKPM: buglet - add `i' to tmp! */ 120 /* AKPM: buglet - add `i' to tmp! */
121 for (i = 0; i < bh->b_size; i += 512) { 121 for (i = 0; i < bh->b_size; i += 512) {
122 journal_header_t *tmp = (journal_header_t*)bh->b_data; 122 journal_header_t *tmp = (journal_header_t*)bh->b_data;
123 tmp->h_magic = cpu_to_be32(JFS_MAGIC_NUMBER); 123 tmp->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
124 tmp->h_blocktype = cpu_to_be32(JFS_COMMIT_BLOCK); 124 tmp->h_blocktype = cpu_to_be32(JBD2_COMMIT_BLOCK);
125 tmp->h_sequence = cpu_to_be32(commit_transaction->t_tid); 125 tmp->h_sequence = cpu_to_be32(commit_transaction->t_tid);
126 } 126 }
127 127
128 JBUFFER_TRACE(descriptor, "write commit block"); 128 JBUFFER_TRACE(descriptor, "write commit block");
129 set_buffer_dirty(bh); 129 set_buffer_dirty(bh);
130 if (journal->j_flags & JFS_BARRIER) { 130 if (journal->j_flags & JBD2_BARRIER) {
131 set_buffer_ordered(bh); 131 set_buffer_ordered(bh);
132 barrier_done = 1; 132 barrier_done = 1;
133 } 133 }
@@ -145,7 +145,7 @@ static int journal_write_commit_record(journal_t *journal,
145 "disabling barriers\n", 145 "disabling barriers\n",
146 bdevname(journal->j_dev, b)); 146 bdevname(journal->j_dev, b));
147 spin_lock(&journal->j_state_lock); 147 spin_lock(&journal->j_state_lock);
148 journal->j_flags &= ~JFS_BARRIER; 148 journal->j_flags &= ~JBD2_BARRIER;
149 spin_unlock(&journal->j_state_lock); 149 spin_unlock(&journal->j_state_lock);
150 150
151 /* And try again, without the barrier */ 151 /* And try again, without the barrier */
@@ -155,7 +155,7 @@ static int journal_write_commit_record(journal_t *journal,
155 ret = sync_dirty_buffer(bh); 155 ret = sync_dirty_buffer(bh);
156 } 156 }
157 put_bh(bh); /* One for getblk() */ 157 put_bh(bh); /* One for getblk() */
158 journal_put_journal_head(descriptor); 158 jbd2_journal_put_journal_head(descriptor);
159 159
160 return (ret == -EIO); 160 return (ret == -EIO);
161} 161}
@@ -239,7 +239,7 @@ write_out_data:
239 if (locked && test_clear_buffer_dirty(bh)) { 239 if (locked && test_clear_buffer_dirty(bh)) {
240 BUFFER_TRACE(bh, "needs writeout, adding to array"); 240 BUFFER_TRACE(bh, "needs writeout, adding to array");
241 wbuf[bufs++] = bh; 241 wbuf[bufs++] = bh;
242 __journal_file_buffer(jh, commit_transaction, 242 __jbd2_journal_file_buffer(jh, commit_transaction,
243 BJ_Locked); 243 BJ_Locked);
244 jbd_unlock_bh_state(bh); 244 jbd_unlock_bh_state(bh);
245 if (bufs == journal->j_wbufsize) { 245 if (bufs == journal->j_wbufsize) {
@@ -251,13 +251,13 @@ write_out_data:
251 } 251 }
252 else { 252 else {
253 BUFFER_TRACE(bh, "writeout complete: unfile"); 253 BUFFER_TRACE(bh, "writeout complete: unfile");
254 __journal_unfile_buffer(jh); 254 __jbd2_journal_unfile_buffer(jh);
255 jbd_unlock_bh_state(bh); 255 jbd_unlock_bh_state(bh);
256 if (locked) 256 if (locked)
257 unlock_buffer(bh); 257 unlock_buffer(bh);
258 journal_remove_journal_head(bh); 258 jbd2_journal_remove_journal_head(bh);
259 /* Once for our safety reference, once for 259 /* Once for our safety reference, once for
260 * journal_remove_journal_head() */ 260 * jbd2_journal_remove_journal_head() */
261 put_bh(bh); 261 put_bh(bh);
262 put_bh(bh); 262 put_bh(bh);
263 } 263 }
@@ -272,12 +272,12 @@ write_out_data:
272} 272}
273 273
274/* 274/*
275 * journal_commit_transaction 275 * jbd2_journal_commit_transaction
276 * 276 *
277 * The primary function for committing a transaction to the log. This 277 * The primary function for committing a transaction to the log. This
278 * function is called by the journal thread to begin a complete commit. 278 * function is called by the journal thread to begin a complete commit.
279 */ 279 */
280void journal_commit_transaction(journal_t *journal) 280void jbd2_journal_commit_transaction(journal_t *journal)
281{ 281{
282 transaction_t *commit_transaction; 282 transaction_t *commit_transaction;
283 struct journal_head *jh, *new_jh, *descriptor; 283 struct journal_head *jh, *new_jh, *descriptor;
@@ -305,10 +305,10 @@ void journal_commit_transaction(journal_t *journal)
305 spin_unlock(&journal->j_list_lock); 305 spin_unlock(&journal->j_list_lock);
306#endif 306#endif
307 307
308 /* Do we need to erase the effects of a prior journal_flush? */ 308 /* Do we need to erase the effects of a prior jbd2_journal_flush? */
309 if (journal->j_flags & JFS_FLUSHED) { 309 if (journal->j_flags & JBD2_FLUSHED) {
310 jbd_debug(3, "super block updated\n"); 310 jbd_debug(3, "super block updated\n");
311 journal_update_superblock(journal, 1); 311 jbd2_journal_update_superblock(journal, 1);
312 } else { 312 } else {
313 jbd_debug(3, "superblock not updated\n"); 313 jbd_debug(3, "superblock not updated\n");
314 } 314 }
@@ -350,7 +350,7 @@ void journal_commit_transaction(journal_t *journal)
350 * BJ_Reserved buffers. Note, it is _not_ permissible to assume 350 * BJ_Reserved buffers. Note, it is _not_ permissible to assume
351 * that there are no such buffers: if a large filesystem 351 * that there are no such buffers: if a large filesystem
352 * operation like a truncate needs to split itself over multiple 352 * operation like a truncate needs to split itself over multiple
353 * transactions, then it may try to do a journal_restart() while 353 * transactions, then it may try to do a jbd2_journal_restart() while
354 * there are still BJ_Reserved buffers outstanding. These must 354 * there are still BJ_Reserved buffers outstanding. These must
355 * be released cleanly from the current transaction. 355 * be released cleanly from the current transaction.
356 * 356 *
@@ -358,25 +358,25 @@ void journal_commit_transaction(journal_t *journal)
358 * again before modifying the buffer in the new transaction, but 358 * again before modifying the buffer in the new transaction, but
359 * we do not require it to remember exactly which old buffers it 359 * we do not require it to remember exactly which old buffers it
360 * has reserved. This is consistent with the existing behaviour 360 * has reserved. This is consistent with the existing behaviour
361 * that multiple journal_get_write_access() calls to the same 361 * that multiple jbd2_journal_get_write_access() calls to the same
362 * buffer are perfectly permissable. 362 * buffer are perfectly permissable.
363 */ 363 */
364 while (commit_transaction->t_reserved_list) { 364 while (commit_transaction->t_reserved_list) {
365 jh = commit_transaction->t_reserved_list; 365 jh = commit_transaction->t_reserved_list;
366 JBUFFER_TRACE(jh, "reserved, unused: refile"); 366 JBUFFER_TRACE(jh, "reserved, unused: refile");
367 /* 367 /*
368 * A journal_get_undo_access()+journal_release_buffer() may 368 * A jbd2_journal_get_undo_access()+jbd2_journal_release_buffer() may
369 * leave undo-committed data. 369 * leave undo-committed data.
370 */ 370 */
371 if (jh->b_committed_data) { 371 if (jh->b_committed_data) {
372 struct buffer_head *bh = jh2bh(jh); 372 struct buffer_head *bh = jh2bh(jh);
373 373
374 jbd_lock_bh_state(bh); 374 jbd_lock_bh_state(bh);
375 jbd_slab_free(jh->b_committed_data, bh->b_size); 375 jbd2_slab_free(jh->b_committed_data, bh->b_size);
376 jh->b_committed_data = NULL; 376 jh->b_committed_data = NULL;
377 jbd_unlock_bh_state(bh); 377 jbd_unlock_bh_state(bh);
378 } 378 }
379 journal_refile_buffer(journal, jh); 379 jbd2_journal_refile_buffer(journal, jh);
380 } 380 }
381 381
382 /* 382 /*
@@ -385,7 +385,7 @@ void journal_commit_transaction(journal_t *journal)
385 * frees some memory 385 * frees some memory
386 */ 386 */
387 spin_lock(&journal->j_list_lock); 387 spin_lock(&journal->j_list_lock);
388 __journal_clean_checkpoint_list(journal); 388 __jbd2_journal_clean_checkpoint_list(journal);
389 spin_unlock(&journal->j_list_lock); 389 spin_unlock(&journal->j_list_lock);
390 390
391 jbd_debug (3, "JBD: commit phase 1\n"); 391 jbd_debug (3, "JBD: commit phase 1\n");
@@ -393,7 +393,7 @@ void journal_commit_transaction(journal_t *journal)
393 /* 393 /*
394 * Switch to a new revoke table. 394 * Switch to a new revoke table.
395 */ 395 */
396 journal_switch_revoke_table(journal); 396 jbd2_journal_switch_revoke_table(journal);
397 397
398 commit_transaction->t_state = T_FLUSH; 398 commit_transaction->t_state = T_FLUSH;
399 journal->j_committing_transaction = commit_transaction; 399 journal->j_committing_transaction = commit_transaction;
@@ -450,9 +450,9 @@ void journal_commit_transaction(journal_t *journal)
450 continue; 450 continue;
451 } 451 }
452 if (buffer_jbd(bh) && jh->b_jlist == BJ_Locked) { 452 if (buffer_jbd(bh) && jh->b_jlist == BJ_Locked) {
453 __journal_unfile_buffer(jh); 453 __jbd2_journal_unfile_buffer(jh);
454 jbd_unlock_bh_state(bh); 454 jbd_unlock_bh_state(bh);
455 journal_remove_journal_head(bh); 455 jbd2_journal_remove_journal_head(bh);
456 put_bh(bh); 456 put_bh(bh);
457 } else { 457 } else {
458 jbd_unlock_bh_state(bh); 458 jbd_unlock_bh_state(bh);
@@ -463,9 +463,9 @@ void journal_commit_transaction(journal_t *journal)
463 spin_unlock(&journal->j_list_lock); 463 spin_unlock(&journal->j_list_lock);
464 464
465 if (err) 465 if (err)
466 __journal_abort_hard(journal); 466 __jbd2_journal_abort_hard(journal);
467 467
468 journal_write_revoke_records(journal, commit_transaction); 468 jbd2_journal_write_revoke_records(journal, commit_transaction);
469 469
470 jbd_debug(3, "JBD: commit phase 2\n"); 470 jbd_debug(3, "JBD: commit phase 2\n");
471 471
@@ -499,7 +499,7 @@ void journal_commit_transaction(journal_t *journal)
499 499
500 if (is_journal_aborted(journal)) { 500 if (is_journal_aborted(journal)) {
501 JBUFFER_TRACE(jh, "journal is aborting: refile"); 501 JBUFFER_TRACE(jh, "journal is aborting: refile");
502 journal_refile_buffer(journal, jh); 502 jbd2_journal_refile_buffer(journal, jh);
503 /* If that was the last one, we need to clean up 503 /* If that was the last one, we need to clean up
504 * any descriptor buffers which may have been 504 * any descriptor buffers which may have been
505 * already allocated, even if we are now 505 * already allocated, even if we are now
@@ -519,9 +519,9 @@ void journal_commit_transaction(journal_t *journal)
519 519
520 jbd_debug(4, "JBD: get descriptor\n"); 520 jbd_debug(4, "JBD: get descriptor\n");
521 521
522 descriptor = journal_get_descriptor_buffer(journal); 522 descriptor = jbd2_journal_get_descriptor_buffer(journal);
523 if (!descriptor) { 523 if (!descriptor) {
524 __journal_abort_hard(journal); 524 __jbd2_journal_abort_hard(journal);
525 continue; 525 continue;
526 } 526 }
527 527
@@ -529,8 +529,8 @@ void journal_commit_transaction(journal_t *journal)
529 jbd_debug(4, "JBD: got buffer %llu (%p)\n", 529 jbd_debug(4, "JBD: got buffer %llu (%p)\n",
530 (unsigned long long)bh->b_blocknr, bh->b_data); 530 (unsigned long long)bh->b_blocknr, bh->b_data);
531 header = (journal_header_t *)&bh->b_data[0]; 531 header = (journal_header_t *)&bh->b_data[0];
532 header->h_magic = cpu_to_be32(JFS_MAGIC_NUMBER); 532 header->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
533 header->h_blocktype = cpu_to_be32(JFS_DESCRIPTOR_BLOCK); 533 header->h_blocktype = cpu_to_be32(JBD2_DESCRIPTOR_BLOCK);
534 header->h_sequence = cpu_to_be32(commit_transaction->t_tid); 534 header->h_sequence = cpu_to_be32(commit_transaction->t_tid);
535 535
536 tagp = &bh->b_data[sizeof(journal_header_t)]; 536 tagp = &bh->b_data[sizeof(journal_header_t)];
@@ -543,25 +543,25 @@ void journal_commit_transaction(journal_t *journal)
543 /* Record it so that we can wait for IO 543 /* Record it so that we can wait for IO
544 completion later */ 544 completion later */
545 BUFFER_TRACE(bh, "ph3: file as descriptor"); 545 BUFFER_TRACE(bh, "ph3: file as descriptor");
546 journal_file_buffer(descriptor, commit_transaction, 546 jbd2_journal_file_buffer(descriptor, commit_transaction,
547 BJ_LogCtl); 547 BJ_LogCtl);
548 } 548 }
549 549
550 /* Where is the buffer to be written? */ 550 /* Where is the buffer to be written? */
551 551
552 err = journal_next_log_block(journal, &blocknr); 552 err = jbd2_journal_next_log_block(journal, &blocknr);
553 /* If the block mapping failed, just abandon the buffer 553 /* If the block mapping failed, just abandon the buffer
554 and repeat this loop: we'll fall into the 554 and repeat this loop: we'll fall into the
555 refile-on-abort condition above. */ 555 refile-on-abort condition above. */
556 if (err) { 556 if (err) {
557 __journal_abort_hard(journal); 557 __jbd2_journal_abort_hard(journal);
558 continue; 558 continue;
559 } 559 }
560 560
561 /* 561 /*
562 * start_this_handle() uses t_outstanding_credits to determine 562 * start_this_handle() uses t_outstanding_credits to determine
563 * the free space in the log, but this counter is changed 563 * the free space in the log, but this counter is changed
564 * by journal_next_log_block() also. 564 * by jbd2_journal_next_log_block() also.
565 */ 565 */
566 commit_transaction->t_outstanding_credits--; 566 commit_transaction->t_outstanding_credits--;
567 567
@@ -576,13 +576,13 @@ void journal_commit_transaction(journal_t *journal)
576 576
577 set_bit(BH_JWrite, &jh2bh(jh)->b_state); 577 set_bit(BH_JWrite, &jh2bh(jh)->b_state);
578 /* 578 /*
579 * akpm: journal_write_metadata_buffer() sets 579 * akpm: jbd2_journal_write_metadata_buffer() sets
580 * new_bh->b_transaction to commit_transaction. 580 * new_bh->b_transaction to commit_transaction.
581 * We need to clean this up before we release new_bh 581 * We need to clean this up before we release new_bh
582 * (which is of type BJ_IO) 582 * (which is of type BJ_IO)
583 */ 583 */
584 JBUFFER_TRACE(jh, "ph3: write metadata"); 584 JBUFFER_TRACE(jh, "ph3: write metadata");
585 flags = journal_write_metadata_buffer(commit_transaction, 585 flags = jbd2_journal_write_metadata_buffer(commit_transaction,
586 jh, &new_jh, blocknr); 586 jh, &new_jh, blocknr);
587 set_bit(BH_JWrite, &jh2bh(new_jh)->b_state); 587 set_bit(BH_JWrite, &jh2bh(new_jh)->b_state);
588 wbuf[bufs++] = jh2bh(new_jh); 588 wbuf[bufs++] = jh2bh(new_jh);
@@ -592,9 +592,9 @@ void journal_commit_transaction(journal_t *journal)
592 592
593 tag_flag = 0; 593 tag_flag = 0;
594 if (flags & 1) 594 if (flags & 1)
595 tag_flag |= JFS_FLAG_ESCAPE; 595 tag_flag |= JBD2_FLAG_ESCAPE;
596 if (!first_tag) 596 if (!first_tag)
597 tag_flag |= JFS_FLAG_SAME_UUID; 597 tag_flag |= JBD2_FLAG_SAME_UUID;
598 598
599 tag = (journal_block_tag_t *) tagp; 599 tag = (journal_block_tag_t *) tagp;
600 tag->t_blocknr = cpu_to_be32(jh2bh(jh)->b_blocknr); 600 tag->t_blocknr = cpu_to_be32(jh2bh(jh)->b_blocknr);
@@ -622,7 +622,7 @@ void journal_commit_transaction(journal_t *journal)
622 submitting the IOs. "tag" still points to 622 submitting the IOs. "tag" still points to
623 the last tag we set up. */ 623 the last tag we set up. */
624 624
625 tag->t_flags |= cpu_to_be32(JFS_FLAG_LAST_TAG); 625 tag->t_flags |= cpu_to_be32(JBD2_FLAG_LAST_TAG);
626 626
627start_journal_io: 627start_journal_io:
628 for (i = 0; i < bufs; i++) { 628 for (i = 0; i < bufs; i++) {
@@ -678,14 +678,14 @@ wait_for_iobuf:
678 clear_buffer_jwrite(bh); 678 clear_buffer_jwrite(bh);
679 679
680 JBUFFER_TRACE(jh, "ph4: unfile after journal write"); 680 JBUFFER_TRACE(jh, "ph4: unfile after journal write");
681 journal_unfile_buffer(journal, jh); 681 jbd2_journal_unfile_buffer(journal, jh);
682 682
683 /* 683 /*
684 * ->t_iobuf_list should contain only dummy buffer_heads 684 * ->t_iobuf_list should contain only dummy buffer_heads
685 * which were created by journal_write_metadata_buffer(). 685 * which were created by jbd2_journal_write_metadata_buffer().
686 */ 686 */
687 BUFFER_TRACE(bh, "dumping temporary bh"); 687 BUFFER_TRACE(bh, "dumping temporary bh");
688 journal_put_journal_head(jh); 688 jbd2_journal_put_journal_head(jh);
689 __brelse(bh); 689 __brelse(bh);
690 J_ASSERT_BH(bh, atomic_read(&bh->b_count) == 0); 690 J_ASSERT_BH(bh, atomic_read(&bh->b_count) == 0);
691 free_buffer_head(bh); 691 free_buffer_head(bh);
@@ -702,7 +702,7 @@ wait_for_iobuf:
702 we finally commit, we can do any checkpointing 702 we finally commit, we can do any checkpointing
703 required. */ 703 required. */
704 JBUFFER_TRACE(jh, "file as BJ_Forget"); 704 JBUFFER_TRACE(jh, "file as BJ_Forget");
705 journal_file_buffer(jh, commit_transaction, BJ_Forget); 705 jbd2_journal_file_buffer(jh, commit_transaction, BJ_Forget);
706 /* Wake up any transactions which were waiting for this 706 /* Wake up any transactions which were waiting for this
707 IO to complete */ 707 IO to complete */
708 wake_up_bit(&bh->b_state, BH_Unshadow); 708 wake_up_bit(&bh->b_state, BH_Unshadow);
@@ -733,8 +733,8 @@ wait_for_iobuf:
733 733
734 BUFFER_TRACE(bh, "ph5: control buffer writeout done: unfile"); 734 BUFFER_TRACE(bh, "ph5: control buffer writeout done: unfile");
735 clear_buffer_jwrite(bh); 735 clear_buffer_jwrite(bh);
736 journal_unfile_buffer(journal, jh); 736 jbd2_journal_unfile_buffer(journal, jh);
737 journal_put_journal_head(jh); 737 jbd2_journal_put_journal_head(jh);
738 __brelse(bh); /* One for getblk */ 738 __brelse(bh); /* One for getblk */
739 /* AKPM: bforget here */ 739 /* AKPM: bforget here */
740 } 740 }
@@ -745,7 +745,7 @@ wait_for_iobuf:
745 err = -EIO; 745 err = -EIO;
746 746
747 if (err) 747 if (err)
748 __journal_abort_hard(journal); 748 __jbd2_journal_abort_hard(journal);
749 749
750 /* End of a transaction! Finally, we can do checkpoint 750 /* End of a transaction! Finally, we can do checkpoint
751 processing: any buffers committed as a result of this 751 processing: any buffers committed as a result of this
@@ -789,14 +789,14 @@ restart_loop:
789 * Otherwise, we can just throw away the frozen data now. 789 * Otherwise, we can just throw away the frozen data now.
790 */ 790 */
791 if (jh->b_committed_data) { 791 if (jh->b_committed_data) {
792 jbd_slab_free(jh->b_committed_data, bh->b_size); 792 jbd2_slab_free(jh->b_committed_data, bh->b_size);
793 jh->b_committed_data = NULL; 793 jh->b_committed_data = NULL;
794 if (jh->b_frozen_data) { 794 if (jh->b_frozen_data) {
795 jh->b_committed_data = jh->b_frozen_data; 795 jh->b_committed_data = jh->b_frozen_data;
796 jh->b_frozen_data = NULL; 796 jh->b_frozen_data = NULL;
797 } 797 }
798 } else if (jh->b_frozen_data) { 798 } else if (jh->b_frozen_data) {
799 jbd_slab_free(jh->b_frozen_data, bh->b_size); 799 jbd2_slab_free(jh->b_frozen_data, bh->b_size);
800 jh->b_frozen_data = NULL; 800 jh->b_frozen_data = NULL;
801 } 801 }
802 802
@@ -804,12 +804,12 @@ restart_loop:
804 cp_transaction = jh->b_cp_transaction; 804 cp_transaction = jh->b_cp_transaction;
805 if (cp_transaction) { 805 if (cp_transaction) {
806 JBUFFER_TRACE(jh, "remove from old cp transaction"); 806 JBUFFER_TRACE(jh, "remove from old cp transaction");
807 __journal_remove_checkpoint(jh); 807 __jbd2_journal_remove_checkpoint(jh);
808 } 808 }
809 809
810 /* Only re-checkpoint the buffer_head if it is marked 810 /* Only re-checkpoint the buffer_head if it is marked
811 * dirty. If the buffer was added to the BJ_Forget list 811 * dirty. If the buffer was added to the BJ_Forget list
812 * by journal_forget, it may no longer be dirty and 812 * by jbd2_journal_forget, it may no longer be dirty and
813 * there's no point in keeping a checkpoint record for 813 * there's no point in keeping a checkpoint record for
814 * it. */ 814 * it. */
815 815
@@ -828,9 +828,9 @@ restart_loop:
828 828
829 if (buffer_jbddirty(bh)) { 829 if (buffer_jbddirty(bh)) {
830 JBUFFER_TRACE(jh, "add to new checkpointing trans"); 830 JBUFFER_TRACE(jh, "add to new checkpointing trans");
831 __journal_insert_checkpoint(jh, commit_transaction); 831 __jbd2_journal_insert_checkpoint(jh, commit_transaction);
832 JBUFFER_TRACE(jh, "refile for checkpoint writeback"); 832 JBUFFER_TRACE(jh, "refile for checkpoint writeback");
833 __journal_refile_buffer(jh); 833 __jbd2_journal_refile_buffer(jh);
834 jbd_unlock_bh_state(bh); 834 jbd_unlock_bh_state(bh);
835 } else { 835 } else {
836 J_ASSERT_BH(bh, !buffer_dirty(bh)); 836 J_ASSERT_BH(bh, !buffer_dirty(bh));
@@ -842,11 +842,11 @@ restart_loop:
842 * disk and before we process the buffer on BJ_Forget 842 * disk and before we process the buffer on BJ_Forget
843 * list. */ 843 * list. */
844 JBUFFER_TRACE(jh, "refile or unfile freed buffer"); 844 JBUFFER_TRACE(jh, "refile or unfile freed buffer");
845 __journal_refile_buffer(jh); 845 __jbd2_journal_refile_buffer(jh);
846 if (!jh->b_transaction) { 846 if (!jh->b_transaction) {
847 jbd_unlock_bh_state(bh); 847 jbd_unlock_bh_state(bh);
848 /* needs a brelse */ 848 /* needs a brelse */
849 journal_remove_journal_head(bh); 849 jbd2_journal_remove_journal_head(bh);
850 release_buffer_page(bh); 850 release_buffer_page(bh);
851 } else 851 } else
852 jbd_unlock_bh_state(bh); 852 jbd_unlock_bh_state(bh);
@@ -856,9 +856,9 @@ restart_loop:
856 spin_unlock(&journal->j_list_lock); 856 spin_unlock(&journal->j_list_lock);
857 /* 857 /*
858 * This is a bit sleazy. We borrow j_list_lock to protect 858 * This is a bit sleazy. We borrow j_list_lock to protect
859 * journal->j_committing_transaction in __journal_remove_checkpoint. 859 * journal->j_committing_transaction in __jbd2_journal_remove_checkpoint.
860 * Really, __journal_remove_checkpoint should be using j_state_lock but 860 * Really, __jbd2_journal_remove_checkpoint should be using j_state_lock but
861 * it's a bit hassle to hold that across __journal_remove_checkpoint 861 * it's a bit hassle to hold that across __jbd2_journal_remove_checkpoint
862 */ 862 */
863 spin_lock(&journal->j_state_lock); 863 spin_lock(&journal->j_state_lock);
864 spin_lock(&journal->j_list_lock); 864 spin_lock(&journal->j_list_lock);
@@ -885,7 +885,7 @@ restart_loop:
885 spin_unlock(&journal->j_state_lock); 885 spin_unlock(&journal->j_state_lock);
886 886
887 if (commit_transaction->t_checkpoint_list == NULL) { 887 if (commit_transaction->t_checkpoint_list == NULL) {
888 __journal_drop_transaction(journal, commit_transaction); 888 __jbd2_journal_drop_transaction(journal, commit_transaction);
889 } else { 889 } else {
890 if (journal->j_checkpoint_transactions == NULL) { 890 if (journal->j_checkpoint_transactions == NULL) {
891 journal->j_checkpoint_transactions = commit_transaction; 891 journal->j_checkpoint_transactions = commit_transaction;
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index c518dd8fe60a..3fbbba20a516 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1,5 +1,5 @@
1/* 1/*
2 * linux/fs/jbd/journal.c 2 * linux/fs/jbd2/journal.c
3 * 3 *
4 * Written by Stephen C. Tweedie <sct@redhat.com>, 1998 4 * Written by Stephen C. Tweedie <sct@redhat.com>, 1998
5 * 5 *
@@ -25,7 +25,7 @@
25#include <linux/module.h> 25#include <linux/module.h>
26#include <linux/time.h> 26#include <linux/time.h>
27#include <linux/fs.h> 27#include <linux/fs.h>
28#include <linux/jbd.h> 28#include <linux/jbd2.h>
29#include <linux/errno.h> 29#include <linux/errno.h>
30#include <linux/slab.h> 30#include <linux/slab.h>
31#include <linux/smp_lock.h> 31#include <linux/smp_lock.h>
@@ -40,51 +40,51 @@
40#include <asm/uaccess.h> 40#include <asm/uaccess.h>
41#include <asm/page.h> 41#include <asm/page.h>
42 42
43EXPORT_SYMBOL(journal_start); 43EXPORT_SYMBOL(jbd2_journal_start);
44EXPORT_SYMBOL(journal_restart); 44EXPORT_SYMBOL(jbd2_journal_restart);
45EXPORT_SYMBOL(journal_extend); 45EXPORT_SYMBOL(jbd2_journal_extend);
46EXPORT_SYMBOL(journal_stop); 46EXPORT_SYMBOL(jbd2_journal_stop);
47EXPORT_SYMBOL(journal_lock_updates); 47EXPORT_SYMBOL(jbd2_journal_lock_updates);
48EXPORT_SYMBOL(journal_unlock_updates); 48EXPORT_SYMBOL(jbd2_journal_unlock_updates);
49EXPORT_SYMBOL(journal_get_write_access); 49EXPORT_SYMBOL(jbd2_journal_get_write_access);
50EXPORT_SYMBOL(journal_get_create_access); 50EXPORT_SYMBOL(jbd2_journal_get_create_access);
51EXPORT_SYMBOL(journal_get_undo_access); 51EXPORT_SYMBOL(jbd2_journal_get_undo_access);
52EXPORT_SYMBOL(journal_dirty_data); 52EXPORT_SYMBOL(jbd2_journal_dirty_data);
53EXPORT_SYMBOL(journal_dirty_metadata); 53EXPORT_SYMBOL(jbd2_journal_dirty_metadata);
54EXPORT_SYMBOL(journal_release_buffer); 54EXPORT_SYMBOL(jbd2_journal_release_buffer);
55EXPORT_SYMBOL(journal_forget); 55EXPORT_SYMBOL(jbd2_journal_forget);
56#if 0 56#if 0
57EXPORT_SYMBOL(journal_sync_buffer); 57EXPORT_SYMBOL(journal_sync_buffer);
58#endif 58#endif
59EXPORT_SYMBOL(journal_flush); 59EXPORT_SYMBOL(jbd2_journal_flush);
60EXPORT_SYMBOL(journal_revoke); 60EXPORT_SYMBOL(jbd2_journal_revoke);
61 61
62EXPORT_SYMBOL(journal_init_dev); 62EXPORT_SYMBOL(jbd2_journal_init_dev);
63EXPORT_SYMBOL(journal_init_inode); 63EXPORT_SYMBOL(jbd2_journal_init_inode);
64EXPORT_SYMBOL(journal_update_format); 64EXPORT_SYMBOL(jbd2_journal_update_format);
65EXPORT_SYMBOL(journal_check_used_features); 65EXPORT_SYMBOL(jbd2_journal_check_used_features);
66EXPORT_SYMBOL(journal_check_available_features); 66EXPORT_SYMBOL(jbd2_journal_check_available_features);
67EXPORT_SYMBOL(journal_set_features); 67EXPORT_SYMBOL(jbd2_journal_set_features);
68EXPORT_SYMBOL(journal_create); 68EXPORT_SYMBOL(jbd2_journal_create);
69EXPORT_SYMBOL(journal_load); 69EXPORT_SYMBOL(jbd2_journal_load);
70EXPORT_SYMBOL(journal_destroy); 70EXPORT_SYMBOL(jbd2_journal_destroy);
71EXPORT_SYMBOL(journal_update_superblock); 71EXPORT_SYMBOL(jbd2_journal_update_superblock);
72EXPORT_SYMBOL(journal_abort); 72EXPORT_SYMBOL(jbd2_journal_abort);
73EXPORT_SYMBOL(journal_errno); 73EXPORT_SYMBOL(jbd2_journal_errno);
74EXPORT_SYMBOL(journal_ack_err); 74EXPORT_SYMBOL(jbd2_journal_ack_err);
75EXPORT_SYMBOL(journal_clear_err); 75EXPORT_SYMBOL(jbd2_journal_clear_err);
76EXPORT_SYMBOL(log_wait_commit); 76EXPORT_SYMBOL(jbd2_log_wait_commit);
77EXPORT_SYMBOL(journal_start_commit); 77EXPORT_SYMBOL(jbd2_journal_start_commit);
78EXPORT_SYMBOL(journal_force_commit_nested); 78EXPORT_SYMBOL(jbd2_journal_force_commit_nested);
79EXPORT_SYMBOL(journal_wipe); 79EXPORT_SYMBOL(jbd2_journal_wipe);
80EXPORT_SYMBOL(journal_blocks_per_page); 80EXPORT_SYMBOL(jbd2_journal_blocks_per_page);
81EXPORT_SYMBOL(journal_invalidatepage); 81EXPORT_SYMBOL(jbd2_journal_invalidatepage);
82EXPORT_SYMBOL(journal_try_to_free_buffers); 82EXPORT_SYMBOL(jbd2_journal_try_to_free_buffers);
83EXPORT_SYMBOL(journal_force_commit); 83EXPORT_SYMBOL(jbd2_journal_force_commit);
84 84
85static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *); 85static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
86static void __journal_abort_soft (journal_t *journal, int errno); 86static void __journal_abort_soft (journal_t *journal, int errno);
87static int journal_create_jbd_slab(size_t slab_size); 87static int jbd2_journal_create_jbd_slab(size_t slab_size);
88 88
89/* 89/*
90 * Helper function used to manage commit timeouts 90 * Helper function used to manage commit timeouts
@@ -98,7 +98,7 @@ static void commit_timeout(unsigned long __data)
98} 98}
99 99
100/* 100/*
101 * kjournald: The main thread function used to manage a logging device 101 * kjournald2: The main thread function used to manage a logging device
102 * journal. 102 * journal.
103 * 103 *
104 * This kernel thread is responsible for two things: 104 * This kernel thread is responsible for two things:
@@ -113,7 +113,7 @@ static void commit_timeout(unsigned long __data)
113 * known as checkpointing, and this thread is responsible for that job. 113 * known as checkpointing, and this thread is responsible for that job.
114 */ 114 */
115 115
116static int kjournald(void *arg) 116static int kjournald2(void *arg)
117{ 117{
118 journal_t *journal = arg; 118 journal_t *journal = arg;
119 transaction_t *transaction; 119 transaction_t *transaction;
@@ -129,7 +129,7 @@ static int kjournald(void *arg)
129 journal->j_task = current; 129 journal->j_task = current;
130 wake_up(&journal->j_wait_done_commit); 130 wake_up(&journal->j_wait_done_commit);
131 131
132 printk(KERN_INFO "kjournald starting. Commit interval %ld seconds\n", 132 printk(KERN_INFO "kjournald2 starting. Commit interval %ld seconds\n",
133 journal->j_commit_interval / HZ); 133 journal->j_commit_interval / HZ);
134 134
135 /* 135 /*
@@ -138,7 +138,7 @@ static int kjournald(void *arg)
138 spin_lock(&journal->j_state_lock); 138 spin_lock(&journal->j_state_lock);
139 139
140loop: 140loop:
141 if (journal->j_flags & JFS_UNMOUNT) 141 if (journal->j_flags & JBD2_UNMOUNT)
142 goto end_loop; 142 goto end_loop;
143 143
144 jbd_debug(1, "commit_sequence=%d, commit_request=%d\n", 144 jbd_debug(1, "commit_sequence=%d, commit_request=%d\n",
@@ -148,7 +148,7 @@ loop:
148 jbd_debug(1, "OK, requests differ\n"); 148 jbd_debug(1, "OK, requests differ\n");
149 spin_unlock(&journal->j_state_lock); 149 spin_unlock(&journal->j_state_lock);
150 del_timer_sync(&journal->j_commit_timer); 150 del_timer_sync(&journal->j_commit_timer);
151 journal_commit_transaction(journal); 151 jbd2_journal_commit_transaction(journal);
152 spin_lock(&journal->j_state_lock); 152 spin_lock(&journal->j_state_lock);
153 goto loop; 153 goto loop;
154 } 154 }
@@ -160,7 +160,7 @@ loop:
160 * good idea, because that depends on threads that may 160 * good idea, because that depends on threads that may
161 * be already stopped. 161 * be already stopped.
162 */ 162 */
163 jbd_debug(1, "Now suspending kjournald\n"); 163 jbd_debug(1, "Now suspending kjournald2\n");
164 spin_unlock(&journal->j_state_lock); 164 spin_unlock(&journal->j_state_lock);
165 refrigerator(); 165 refrigerator();
166 spin_lock(&journal->j_state_lock); 166 spin_lock(&journal->j_state_lock);
@@ -180,7 +180,7 @@ loop:
180 if (transaction && time_after_eq(jiffies, 180 if (transaction && time_after_eq(jiffies,
181 transaction->t_expires)) 181 transaction->t_expires))
182 should_sleep = 0; 182 should_sleep = 0;
183 if (journal->j_flags & JFS_UNMOUNT) 183 if (journal->j_flags & JBD2_UNMOUNT)
184 should_sleep = 0; 184 should_sleep = 0;
185 if (should_sleep) { 185 if (should_sleep) {
186 spin_unlock(&journal->j_state_lock); 186 spin_unlock(&journal->j_state_lock);
@@ -190,7 +190,7 @@ loop:
190 finish_wait(&journal->j_wait_commit, &wait); 190 finish_wait(&journal->j_wait_commit, &wait);
191 } 191 }
192 192
193 jbd_debug(1, "kjournald wakes\n"); 193 jbd_debug(1, "kjournald2 wakes\n");
194 194
195 /* 195 /*
196 * Were we woken up by a commit wakeup event? 196 * Were we woken up by a commit wakeup event?
@@ -211,16 +211,16 @@ end_loop:
211 return 0; 211 return 0;
212} 212}
213 213
214static void journal_start_thread(journal_t *journal) 214static void jbd2_journal_start_thread(journal_t *journal)
215{ 215{
216 kthread_run(kjournald, journal, "kjournald"); 216 kthread_run(kjournald2, journal, "kjournald2");
217 wait_event(journal->j_wait_done_commit, journal->j_task != 0); 217 wait_event(journal->j_wait_done_commit, journal->j_task != 0);
218} 218}
219 219
220static void journal_kill_thread(journal_t *journal) 220static void journal_kill_thread(journal_t *journal)
221{ 221{
222 spin_lock(&journal->j_state_lock); 222 spin_lock(&journal->j_state_lock);
223 journal->j_flags |= JFS_UNMOUNT; 223 journal->j_flags |= JBD2_UNMOUNT;
224 224
225 while (journal->j_task) { 225 while (journal->j_task) {
226 wake_up(&journal->j_wait_commit); 226 wake_up(&journal->j_wait_commit);
@@ -232,7 +232,7 @@ static void journal_kill_thread(journal_t *journal)
232} 232}
233 233
234/* 234/*
235 * journal_write_metadata_buffer: write a metadata buffer to the journal. 235 * jbd2_journal_write_metadata_buffer: write a metadata buffer to the journal.
236 * 236 *
237 * Writes a metadata buffer to a given disk block. The actual IO is not 237 * Writes a metadata buffer to a given disk block. The actual IO is not
238 * performed but a new buffer_head is constructed which labels the data 238 * performed but a new buffer_head is constructed which labels the data
@@ -240,7 +240,7 @@ static void journal_kill_thread(journal_t *journal)
240 * 240 *
241 * Any magic-number escaping which needs to be done will cause a 241 * Any magic-number escaping which needs to be done will cause a
242 * copy-out here. If the buffer happens to start with the 242 * copy-out here. If the buffer happens to start with the
243 * JFS_MAGIC_NUMBER, then we can't write it to the log directly: the 243 * JBD2_MAGIC_NUMBER, then we can't write it to the log directly: the
244 * magic number is only written to the log for descripter blocks. In 244 * magic number is only written to the log for descripter blocks. In
245 * this case, we copy the data and replace the first word with 0, and we 245 * this case, we copy the data and replace the first word with 0, and we
246 * return a result code which indicates that this buffer needs to be 246 * return a result code which indicates that this buffer needs to be
@@ -268,7 +268,7 @@ static void journal_kill_thread(journal_t *journal)
268 * Bit 1 set == buffer copy-out performed (kfree the data after IO) 268 * Bit 1 set == buffer copy-out performed (kfree the data after IO)
269 */ 269 */
270 270
271int journal_write_metadata_buffer(transaction_t *transaction, 271int jbd2_journal_write_metadata_buffer(transaction_t *transaction,
272 struct journal_head *jh_in, 272 struct journal_head *jh_in,
273 struct journal_head **jh_out, 273 struct journal_head **jh_out,
274 unsigned long blocknr) 274 unsigned long blocknr)
@@ -316,7 +316,7 @@ repeat:
316 * Check for escaping 316 * Check for escaping
317 */ 317 */
318 if (*((__be32 *)(mapped_data + new_offset)) == 318 if (*((__be32 *)(mapped_data + new_offset)) ==
319 cpu_to_be32(JFS_MAGIC_NUMBER)) { 319 cpu_to_be32(JBD2_MAGIC_NUMBER)) {
320 need_copy_out = 1; 320 need_copy_out = 1;
321 do_escape = 1; 321 do_escape = 1;
322 } 322 }
@@ -329,10 +329,10 @@ repeat:
329 char *tmp; 329 char *tmp;
330 330
331 jbd_unlock_bh_state(bh_in); 331 jbd_unlock_bh_state(bh_in);
332 tmp = jbd_slab_alloc(bh_in->b_size, GFP_NOFS); 332 tmp = jbd2_slab_alloc(bh_in->b_size, GFP_NOFS);
333 jbd_lock_bh_state(bh_in); 333 jbd_lock_bh_state(bh_in);
334 if (jh_in->b_frozen_data) { 334 if (jh_in->b_frozen_data) {
335 jbd_slab_free(tmp, bh_in->b_size); 335 jbd2_slab_free(tmp, bh_in->b_size);
336 goto repeat; 336 goto repeat;
337 } 337 }
338 338
@@ -362,7 +362,7 @@ repeat:
362 atomic_set(&new_bh->b_count, 1); 362 atomic_set(&new_bh->b_count, 1);
363 jbd_unlock_bh_state(bh_in); 363 jbd_unlock_bh_state(bh_in);
364 364
365 new_jh = journal_add_journal_head(new_bh); /* This sleeps */ 365 new_jh = jbd2_journal_add_journal_head(new_bh); /* This sleeps */
366 366
367 set_bh_page(new_bh, new_page, new_offset); 367 set_bh_page(new_bh, new_page, new_offset);
368 new_jh->b_transaction = NULL; 368 new_jh->b_transaction = NULL;
@@ -380,9 +380,9 @@ repeat:
380 * copying is moved to the transaction's shadow queue. 380 * copying is moved to the transaction's shadow queue.
381 */ 381 */
382 JBUFFER_TRACE(jh_in, "file as BJ_Shadow"); 382 JBUFFER_TRACE(jh_in, "file as BJ_Shadow");
383 journal_file_buffer(jh_in, transaction, BJ_Shadow); 383 jbd2_journal_file_buffer(jh_in, transaction, BJ_Shadow);
384 JBUFFER_TRACE(new_jh, "file as BJ_IO"); 384 JBUFFER_TRACE(new_jh, "file as BJ_IO");
385 journal_file_buffer(new_jh, transaction, BJ_IO); 385 jbd2_journal_file_buffer(new_jh, transaction, BJ_IO);
386 386
387 return do_escape | (done_copy_out << 1); 387 return do_escape | (done_copy_out << 1);
388} 388}
@@ -393,14 +393,14 @@ repeat:
393 */ 393 */
394 394
395/* 395/*
396 * __log_space_left: Return the number of free blocks left in the journal. 396 * __jbd2_log_space_left: Return the number of free blocks left in the journal.
397 * 397 *
398 * Called with the journal already locked. 398 * Called with the journal already locked.
399 * 399 *
400 * Called under j_state_lock 400 * Called under j_state_lock
401 */ 401 */
402 402
403int __log_space_left(journal_t *journal) 403int __jbd2_log_space_left(journal_t *journal)
404{ 404{
405 int left = journal->j_free; 405 int left = journal->j_free;
406 406
@@ -424,7 +424,7 @@ int __log_space_left(journal_t *journal)
424/* 424/*
425 * Called under j_state_lock. Returns true if a transaction was started. 425 * Called under j_state_lock. Returns true if a transaction was started.
426 */ 426 */
427int __log_start_commit(journal_t *journal, tid_t target) 427int __jbd2_log_start_commit(journal_t *journal, tid_t target)
428{ 428{
429 /* 429 /*
430 * Are we already doing a recent enough commit? 430 * Are we already doing a recent enough commit?
@@ -445,12 +445,12 @@ int __log_start_commit(journal_t *journal, tid_t target)
445 return 0; 445 return 0;
446} 446}
447 447
448int log_start_commit(journal_t *journal, tid_t tid) 448int jbd2_log_start_commit(journal_t *journal, tid_t tid)
449{ 449{
450 int ret; 450 int ret;
451 451
452 spin_lock(&journal->j_state_lock); 452 spin_lock(&journal->j_state_lock);
453 ret = __log_start_commit(journal, tid); 453 ret = __jbd2_log_start_commit(journal, tid);
454 spin_unlock(&journal->j_state_lock); 454 spin_unlock(&journal->j_state_lock);
455 return ret; 455 return ret;
456} 456}
@@ -465,7 +465,7 @@ int log_start_commit(journal_t *journal, tid_t tid)
465 * 465 *
466 * Returns true if a transaction was started. 466 * Returns true if a transaction was started.
467 */ 467 */
468int journal_force_commit_nested(journal_t *journal) 468int jbd2_journal_force_commit_nested(journal_t *journal)
469{ 469{
470 transaction_t *transaction = NULL; 470 transaction_t *transaction = NULL;
471 tid_t tid; 471 tid_t tid;
@@ -473,7 +473,7 @@ int journal_force_commit_nested(journal_t *journal)
473 spin_lock(&journal->j_state_lock); 473 spin_lock(&journal->j_state_lock);
474 if (journal->j_running_transaction && !current->journal_info) { 474 if (journal->j_running_transaction && !current->journal_info) {
475 transaction = journal->j_running_transaction; 475 transaction = journal->j_running_transaction;
476 __log_start_commit(journal, transaction->t_tid); 476 __jbd2_log_start_commit(journal, transaction->t_tid);
477 } else if (journal->j_committing_transaction) 477 } else if (journal->j_committing_transaction)
478 transaction = journal->j_committing_transaction; 478 transaction = journal->j_committing_transaction;
479 479
@@ -484,7 +484,7 @@ int journal_force_commit_nested(journal_t *journal)
484 484
485 tid = transaction->t_tid; 485 tid = transaction->t_tid;
486 spin_unlock(&journal->j_state_lock); 486 spin_unlock(&journal->j_state_lock);
487 log_wait_commit(journal, tid); 487 jbd2_log_wait_commit(journal, tid);
488 return 1; 488 return 1;
489} 489}
490 490
@@ -492,7 +492,7 @@ int journal_force_commit_nested(journal_t *journal)
492 * Start a commit of the current running transaction (if any). Returns true 492 * Start a commit of the current running transaction (if any). Returns true
493 * if a transaction was started, and fills its tid in at *ptid 493 * if a transaction was started, and fills its tid in at *ptid
494 */ 494 */
495int journal_start_commit(journal_t *journal, tid_t *ptid) 495int jbd2_journal_start_commit(journal_t *journal, tid_t *ptid)
496{ 496{
497 int ret = 0; 497 int ret = 0;
498 498
@@ -500,7 +500,7 @@ int journal_start_commit(journal_t *journal, tid_t *ptid)
500 if (journal->j_running_transaction) { 500 if (journal->j_running_transaction) {
501 tid_t tid = journal->j_running_transaction->t_tid; 501 tid_t tid = journal->j_running_transaction->t_tid;
502 502
503 ret = __log_start_commit(journal, tid); 503 ret = __jbd2_log_start_commit(journal, tid);
504 if (ret && ptid) 504 if (ret && ptid)
505 *ptid = tid; 505 *ptid = tid;
506 } else if (journal->j_committing_transaction && ptid) { 506 } else if (journal->j_committing_transaction && ptid) {
@@ -519,7 +519,7 @@ int journal_start_commit(journal_t *journal, tid_t *ptid)
519 * Wait for a specified commit to complete. 519 * Wait for a specified commit to complete.
520 * The caller may not hold the journal lock. 520 * The caller may not hold the journal lock.
521 */ 521 */
522int log_wait_commit(journal_t *journal, tid_t tid) 522int jbd2_log_wait_commit(journal_t *journal, tid_t tid)
523{ 523{
524 int err = 0; 524 int err = 0;
525 525
@@ -555,7 +555,7 @@ int log_wait_commit(journal_t *journal, tid_t tid)
555 * Log buffer allocation routines: 555 * Log buffer allocation routines:
556 */ 556 */
557 557
558int journal_next_log_block(journal_t *journal, unsigned long *retp) 558int jbd2_journal_next_log_block(journal_t *journal, unsigned long *retp)
559{ 559{
560 unsigned long blocknr; 560 unsigned long blocknr;
561 561
@@ -568,7 +568,7 @@ int journal_next_log_block(journal_t *journal, unsigned long *retp)
568 if (journal->j_head == journal->j_last) 568 if (journal->j_head == journal->j_last)
569 journal->j_head = journal->j_first; 569 journal->j_head = journal->j_first;
570 spin_unlock(&journal->j_state_lock); 570 spin_unlock(&journal->j_state_lock);
571 return journal_bmap(journal, blocknr, retp); 571 return jbd2_journal_bmap(journal, blocknr, retp);
572} 572}
573 573
574/* 574/*
@@ -578,7 +578,7 @@ int journal_next_log_block(journal_t *journal, unsigned long *retp)
578 * this is a no-op. If needed, we can use j_blk_offset - everything is 578 * this is a no-op. If needed, we can use j_blk_offset - everything is
579 * ready. 579 * ready.
580 */ 580 */
581int journal_bmap(journal_t *journal, unsigned long blocknr, 581int jbd2_journal_bmap(journal_t *journal, unsigned long blocknr,
582 unsigned long *retp) 582 unsigned long *retp)
583{ 583{
584 int err = 0; 584 int err = 0;
@@ -610,18 +610,18 @@ int journal_bmap(journal_t *journal, unsigned long blocknr,
610 * the journal without copying their contents, but for journal 610 * the journal without copying their contents, but for journal
611 * descriptor blocks we do need to generate bona fide buffers. 611 * descriptor blocks we do need to generate bona fide buffers.
612 * 612 *
613 * After the caller of journal_get_descriptor_buffer() has finished modifying 613 * After the caller of jbd2_journal_get_descriptor_buffer() has finished modifying
614 * the buffer's contents they really should run flush_dcache_page(bh->b_page). 614 * the buffer's contents they really should run flush_dcache_page(bh->b_page).
615 * But we don't bother doing that, so there will be coherency problems with 615 * But we don't bother doing that, so there will be coherency problems with
616 * mmaps of blockdevs which hold live JBD-controlled filesystems. 616 * mmaps of blockdevs which hold live JBD-controlled filesystems.
617 */ 617 */
618struct journal_head *journal_get_descriptor_buffer(journal_t *journal) 618struct journal_head *jbd2_journal_get_descriptor_buffer(journal_t *journal)
619{ 619{
620 struct buffer_head *bh; 620 struct buffer_head *bh;
621 unsigned long blocknr; 621 unsigned long blocknr;
622 int err; 622 int err;
623 623
624 err = journal_next_log_block(journal, &blocknr); 624 err = jbd2_journal_next_log_block(journal, &blocknr);
625 625
626 if (err) 626 if (err)
627 return NULL; 627 return NULL;
@@ -632,7 +632,7 @@ struct journal_head *journal_get_descriptor_buffer(journal_t *journal)
632 set_buffer_uptodate(bh); 632 set_buffer_uptodate(bh);
633 unlock_buffer(bh); 633 unlock_buffer(bh);
634 BUFFER_TRACE(bh, "return this buffer"); 634 BUFFER_TRACE(bh, "return this buffer");
635 return journal_add_journal_head(bh); 635 return jbd2_journal_add_journal_head(bh);
636} 636}
637 637
638/* 638/*
@@ -669,10 +669,10 @@ static journal_t * journal_init_common (void)
669 journal->j_commit_interval = (HZ * JBD_DEFAULT_MAX_COMMIT_AGE); 669 journal->j_commit_interval = (HZ * JBD_DEFAULT_MAX_COMMIT_AGE);
670 670
671 /* The journal is marked for error until we succeed with recovery! */ 671 /* The journal is marked for error until we succeed with recovery! */
672 journal->j_flags = JFS_ABORT; 672 journal->j_flags = JBD2_ABORT;
673 673
674 /* Set up a default-sized revoke table for the new mount. */ 674 /* Set up a default-sized revoke table for the new mount. */
675 err = journal_init_revoke(journal, JOURNAL_REVOKE_DEFAULT_HASH); 675 err = jbd2_journal_init_revoke(journal, JOURNAL_REVOKE_DEFAULT_HASH);
676 if (err) { 676 if (err) {
677 kfree(journal); 677 kfree(journal);
678 goto fail; 678 goto fail;
@@ -682,7 +682,7 @@ fail:
682 return NULL; 682 return NULL;
683} 683}
684 684
685/* journal_init_dev and journal_init_inode: 685/* jbd2_journal_init_dev and jbd2_journal_init_inode:
686 * 686 *
687 * Create a journal structure assigned some fixed set of disk blocks to 687 * Create a journal structure assigned some fixed set of disk blocks to
688 * the journal. We don't actually touch those disk blocks yet, but we 688 * the journal. We don't actually touch those disk blocks yet, but we
@@ -692,7 +692,7 @@ fail:
692 */ 692 */
693 693
694/** 694/**
695 * journal_t * journal_init_dev() - creates an initialises a journal structure 695 * journal_t * jbd2_journal_init_dev() - creates an initialises a journal structure
696 * @bdev: Block device on which to create the journal 696 * @bdev: Block device on which to create the journal
697 * @fs_dev: Device which hold journalled filesystem for this journal. 697 * @fs_dev: Device which hold journalled filesystem for this journal.
698 * @start: Block nr Start of journal. 698 * @start: Block nr Start of journal.
@@ -700,11 +700,11 @@ fail:
700 * @blocksize: blocksize of journalling device 700 * @blocksize: blocksize of journalling device
701 * @returns: a newly created journal_t * 701 * @returns: a newly created journal_t *
702 * 702 *
703 * journal_init_dev creates a journal which maps a fixed contiguous 703 * jbd2_journal_init_dev creates a journal which maps a fixed contiguous
704 * range of blocks on an arbitrary block device. 704 * range of blocks on an arbitrary block device.
705 * 705 *
706 */ 706 */
707journal_t * journal_init_dev(struct block_device *bdev, 707journal_t * jbd2_journal_init_dev(struct block_device *bdev,
708 struct block_device *fs_dev, 708 struct block_device *fs_dev,
709 int start, int len, int blocksize) 709 int start, int len, int blocksize)
710{ 710{
@@ -740,14 +740,14 @@ journal_t * journal_init_dev(struct block_device *bdev,
740} 740}
741 741
742/** 742/**
743 * journal_t * journal_init_inode () - creates a journal which maps to a inode. 743 * journal_t * jbd2_journal_init_inode () - creates a journal which maps to a inode.
744 * @inode: An inode to create the journal in 744 * @inode: An inode to create the journal in
745 * 745 *
746 * journal_init_inode creates a journal which maps an on-disk inode as 746 * jbd2_journal_init_inode creates a journal which maps an on-disk inode as
747 * the journal. The inode must exist already, must support bmap() and 747 * the journal. The inode must exist already, must support bmap() and
748 * must have all data blocks preallocated. 748 * must have all data blocks preallocated.
749 */ 749 */
750journal_t * journal_init_inode (struct inode *inode) 750journal_t * jbd2_journal_init_inode (struct inode *inode)
751{ 751{
752 struct buffer_head *bh; 752 struct buffer_head *bh;
753 journal_t *journal = journal_init_common(); 753 journal_t *journal = journal_init_common();
@@ -780,7 +780,7 @@ journal_t * journal_init_inode (struct inode *inode)
780 return NULL; 780 return NULL;
781 } 781 }
782 782
783 err = journal_bmap(journal, 0, &blocknr); 783 err = jbd2_journal_bmap(journal, 0, &blocknr);
784 /* If that failed, give up */ 784 /* If that failed, give up */
785 if (err) { 785 if (err) {
786 printk(KERN_ERR "%s: Cannnot locate journal superblock\n", 786 printk(KERN_ERR "%s: Cannnot locate journal superblock\n",
@@ -838,27 +838,27 @@ static int journal_reset(journal_t *journal)
838 journal->j_max_transaction_buffers = journal->j_maxlen / 4; 838 journal->j_max_transaction_buffers = journal->j_maxlen / 4;
839 839
840 /* Add the dynamic fields and write it to disk. */ 840 /* Add the dynamic fields and write it to disk. */
841 journal_update_superblock(journal, 1); 841 jbd2_journal_update_superblock(journal, 1);
842 journal_start_thread(journal); 842 jbd2_journal_start_thread(journal);
843 return 0; 843 return 0;
844} 844}
845 845
846/** 846/**
847 * int journal_create() - Initialise the new journal file 847 * int jbd2_journal_create() - Initialise the new journal file
848 * @journal: Journal to create. This structure must have been initialised 848 * @journal: Journal to create. This structure must have been initialised
849 * 849 *
850 * Given a journal_t structure which tells us which disk blocks we can 850 * Given a journal_t structure which tells us which disk blocks we can
851 * use, create a new journal superblock and initialise all of the 851 * use, create a new journal superblock and initialise all of the
852 * journal fields from scratch. 852 * journal fields from scratch.
853 **/ 853 **/
854int journal_create(journal_t *journal) 854int jbd2_journal_create(journal_t *journal)
855{ 855{
856 unsigned long blocknr; 856 unsigned long blocknr;
857 struct buffer_head *bh; 857 struct buffer_head *bh;
858 journal_superblock_t *sb; 858 journal_superblock_t *sb;
859 int i, err; 859 int i, err;
860 860
861 if (journal->j_maxlen < JFS_MIN_JOURNAL_BLOCKS) { 861 if (journal->j_maxlen < JBD2_MIN_JOURNAL_BLOCKS) {
862 printk (KERN_ERR "Journal length (%d blocks) too short.\n", 862 printk (KERN_ERR "Journal length (%d blocks) too short.\n",
863 journal->j_maxlen); 863 journal->j_maxlen);
864 journal_fail_superblock(journal); 864 journal_fail_superblock(journal);
@@ -876,10 +876,10 @@ int journal_create(journal_t *journal)
876 } 876 }
877 877
878 /* Zero out the entire journal on disk. We cannot afford to 878 /* Zero out the entire journal on disk. We cannot afford to
879 have any blocks on disk beginning with JFS_MAGIC_NUMBER. */ 879 have any blocks on disk beginning with JBD2_MAGIC_NUMBER. */
880 jbd_debug(1, "JBD: Zeroing out journal blocks...\n"); 880 jbd_debug(1, "JBD: Zeroing out journal blocks...\n");
881 for (i = 0; i < journal->j_maxlen; i++) { 881 for (i = 0; i < journal->j_maxlen; i++) {
882 err = journal_bmap(journal, i, &blocknr); 882 err = jbd2_journal_bmap(journal, i, &blocknr);
883 if (err) 883 if (err)
884 return err; 884 return err;
885 bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize); 885 bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
@@ -899,8 +899,8 @@ int journal_create(journal_t *journal)
899 /* OK, fill in the initial static fields in the new superblock */ 899 /* OK, fill in the initial static fields in the new superblock */
900 sb = journal->j_superblock; 900 sb = journal->j_superblock;
901 901
902 sb->s_header.h_magic = cpu_to_be32(JFS_MAGIC_NUMBER); 902 sb->s_header.h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
903 sb->s_header.h_blocktype = cpu_to_be32(JFS_SUPERBLOCK_V2); 903 sb->s_header.h_blocktype = cpu_to_be32(JBD2_SUPERBLOCK_V2);
904 904
905 sb->s_blocksize = cpu_to_be32(journal->j_blocksize); 905 sb->s_blocksize = cpu_to_be32(journal->j_blocksize);
906 sb->s_maxlen = cpu_to_be32(journal->j_maxlen); 906 sb->s_maxlen = cpu_to_be32(journal->j_maxlen);
@@ -908,21 +908,21 @@ int journal_create(journal_t *journal)
908 908
909 journal->j_transaction_sequence = 1; 909 journal->j_transaction_sequence = 1;
910 910
911 journal->j_flags &= ~JFS_ABORT; 911 journal->j_flags &= ~JBD2_ABORT;
912 journal->j_format_version = 2; 912 journal->j_format_version = 2;
913 913
914 return journal_reset(journal); 914 return journal_reset(journal);
915} 915}
916 916
917/** 917/**
918 * void journal_update_superblock() - Update journal sb on disk. 918 * void jbd2_journal_update_superblock() - Update journal sb on disk.
919 * @journal: The journal to update. 919 * @journal: The journal to update.
920 * @wait: Set to '0' if you don't want to wait for IO completion. 920 * @wait: Set to '0' if you don't want to wait for IO completion.
921 * 921 *
922 * Update a journal's dynamic superblock fields and write it to disk, 922 * Update a journal's dynamic superblock fields and write it to disk,
923 * optionally waiting for the IO to complete. 923 * optionally waiting for the IO to complete.
924 */ 924 */
925void journal_update_superblock(journal_t *journal, int wait) 925void jbd2_journal_update_superblock(journal_t *journal, int wait)
926{ 926{
927 journal_superblock_t *sb = journal->j_superblock; 927 journal_superblock_t *sb = journal->j_superblock;
928 struct buffer_head *bh = journal->j_sb_buffer; 928 struct buffer_head *bh = journal->j_sb_buffer;
@@ -931,7 +931,7 @@ void journal_update_superblock(journal_t *journal, int wait)
931 * As a special case, if the on-disk copy is already marked as needing 931 * As a special case, if the on-disk copy is already marked as needing
932 * no recovery (s_start == 0) and there are no outstanding transactions 932 * no recovery (s_start == 0) and there are no outstanding transactions
933 * in the filesystem, then we can safely defer the superblock update 933 * in the filesystem, then we can safely defer the superblock update
934 * until the next commit by setting JFS_FLUSHED. This avoids 934 * until the next commit by setting JBD2_FLUSHED. This avoids
935 * attempting a write to a potential-readonly device. 935 * attempting a write to a potential-readonly device.
936 */ 936 */
937 if (sb->s_start == 0 && journal->j_tail_sequence == 937 if (sb->s_start == 0 && journal->j_tail_sequence ==
@@ -966,9 +966,9 @@ out:
966 966
967 spin_lock(&journal->j_state_lock); 967 spin_lock(&journal->j_state_lock);
968 if (sb->s_start) 968 if (sb->s_start)
969 journal->j_flags &= ~JFS_FLUSHED; 969 journal->j_flags &= ~JBD2_FLUSHED;
970 else 970 else
971 journal->j_flags |= JFS_FLUSHED; 971 journal->j_flags |= JBD2_FLUSHED;
972 spin_unlock(&journal->j_state_lock); 972 spin_unlock(&journal->j_state_lock);
973} 973}
974 974
@@ -1000,17 +1000,17 @@ static int journal_get_superblock(journal_t *journal)
1000 1000
1001 err = -EINVAL; 1001 err = -EINVAL;
1002 1002
1003 if (sb->s_header.h_magic != cpu_to_be32(JFS_MAGIC_NUMBER) || 1003 if (sb->s_header.h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER) ||
1004 sb->s_blocksize != cpu_to_be32(journal->j_blocksize)) { 1004 sb->s_blocksize != cpu_to_be32(journal->j_blocksize)) {
1005 printk(KERN_WARNING "JBD: no valid journal superblock found\n"); 1005 printk(KERN_WARNING "JBD: no valid journal superblock found\n");
1006 goto out; 1006 goto out;
1007 } 1007 }
1008 1008
1009 switch(be32_to_cpu(sb->s_header.h_blocktype)) { 1009 switch(be32_to_cpu(sb->s_header.h_blocktype)) {
1010 case JFS_SUPERBLOCK_V1: 1010 case JBD2_SUPERBLOCK_V1:
1011 journal->j_format_version = 1; 1011 journal->j_format_version = 1;
1012 break; 1012 break;
1013 case JFS_SUPERBLOCK_V2: 1013 case JBD2_SUPERBLOCK_V2:
1014 journal->j_format_version = 2; 1014 journal->j_format_version = 2;
1015 break; 1015 break;
1016 default: 1016 default:
@@ -1059,14 +1059,14 @@ static int load_superblock(journal_t *journal)
1059 1059
1060 1060
1061/** 1061/**
1062 * int journal_load() - Read journal from disk. 1062 * int jbd2_journal_load() - Read journal from disk.
1063 * @journal: Journal to act on. 1063 * @journal: Journal to act on.
1064 * 1064 *
1065 * Given a journal_t structure which tells us which disk blocks contain 1065 * Given a journal_t structure which tells us which disk blocks contain
1066 * a journal, read the journal from disk to initialise the in-memory 1066 * a journal, read the journal from disk to initialise the in-memory
1067 * structures. 1067 * structures.
1068 */ 1068 */
1069int journal_load(journal_t *journal) 1069int jbd2_journal_load(journal_t *journal)
1070{ 1070{
1071 int err; 1071 int err;
1072 journal_superblock_t *sb; 1072 journal_superblock_t *sb;
@@ -1081,9 +1081,9 @@ int journal_load(journal_t *journal)
1081 1081
1082 if (journal->j_format_version >= 2) { 1082 if (journal->j_format_version >= 2) {
1083 if ((sb->s_feature_ro_compat & 1083 if ((sb->s_feature_ro_compat &
1084 ~cpu_to_be32(JFS_KNOWN_ROCOMPAT_FEATURES)) || 1084 ~cpu_to_be32(JBD2_KNOWN_ROCOMPAT_FEATURES)) ||
1085 (sb->s_feature_incompat & 1085 (sb->s_feature_incompat &
1086 ~cpu_to_be32(JFS_KNOWN_INCOMPAT_FEATURES))) { 1086 ~cpu_to_be32(JBD2_KNOWN_INCOMPAT_FEATURES))) {
1087 printk (KERN_WARNING 1087 printk (KERN_WARNING
1088 "JBD: Unrecognised features on journal\n"); 1088 "JBD: Unrecognised features on journal\n");
1089 return -EINVAL; 1089 return -EINVAL;
@@ -1093,13 +1093,13 @@ int journal_load(journal_t *journal)
1093 /* 1093 /*
1094 * Create a slab for this blocksize 1094 * Create a slab for this blocksize
1095 */ 1095 */
1096 err = journal_create_jbd_slab(be32_to_cpu(sb->s_blocksize)); 1096 err = jbd2_journal_create_jbd_slab(be32_to_cpu(sb->s_blocksize));
1097 if (err) 1097 if (err)
1098 return err; 1098 return err;
1099 1099
1100 /* Let the recovery code check whether it needs to recover any 1100 /* Let the recovery code check whether it needs to recover any
1101 * data from the journal. */ 1101 * data from the journal. */
1102 if (journal_recover(journal)) 1102 if (jbd2_journal_recover(journal))
1103 goto recovery_error; 1103 goto recovery_error;
1104 1104
1105 /* OK, we've finished with the dynamic journal bits: 1105 /* OK, we've finished with the dynamic journal bits:
@@ -1108,8 +1108,8 @@ int journal_load(journal_t *journal)
1108 if (journal_reset(journal)) 1108 if (journal_reset(journal))
1109 goto recovery_error; 1109 goto recovery_error;
1110 1110
1111 journal->j_flags &= ~JFS_ABORT; 1111 journal->j_flags &= ~JBD2_ABORT;
1112 journal->j_flags |= JFS_LOADED; 1112 journal->j_flags |= JBD2_LOADED;
1113 return 0; 1113 return 0;
1114 1114
1115recovery_error: 1115recovery_error:
@@ -1118,20 +1118,20 @@ recovery_error:
1118} 1118}
1119 1119
1120/** 1120/**
1121 * void journal_destroy() - Release a journal_t structure. 1121 * void jbd2_journal_destroy() - Release a journal_t structure.
1122 * @journal: Journal to act on. 1122 * @journal: Journal to act on.
1123 * 1123 *
1124 * Release a journal_t structure once it is no longer in use by the 1124 * Release a journal_t structure once it is no longer in use by the
1125 * journaled object. 1125 * journaled object.
1126 */ 1126 */
1127void journal_destroy(journal_t *journal) 1127void jbd2_journal_destroy(journal_t *journal)
1128{ 1128{
1129 /* Wait for the commit thread to wake up and die. */ 1129 /* Wait for the commit thread to wake up and die. */
1130 journal_kill_thread(journal); 1130 journal_kill_thread(journal);
1131 1131
1132 /* Force a final log commit */ 1132 /* Force a final log commit */
1133 if (journal->j_running_transaction) 1133 if (journal->j_running_transaction)
1134 journal_commit_transaction(journal); 1134 jbd2_journal_commit_transaction(journal);
1135 1135
1136 /* Force any old transactions to disk */ 1136 /* Force any old transactions to disk */
1137 1137
@@ -1139,7 +1139,7 @@ void journal_destroy(journal_t *journal)
1139 spin_lock(&journal->j_list_lock); 1139 spin_lock(&journal->j_list_lock);
1140 while (journal->j_checkpoint_transactions != NULL) { 1140 while (journal->j_checkpoint_transactions != NULL) {
1141 spin_unlock(&journal->j_list_lock); 1141 spin_unlock(&journal->j_list_lock);
1142 log_do_checkpoint(journal); 1142 jbd2_log_do_checkpoint(journal);
1143 spin_lock(&journal->j_list_lock); 1143 spin_lock(&journal->j_list_lock);
1144 } 1144 }
1145 1145
@@ -1152,21 +1152,21 @@ void journal_destroy(journal_t *journal)
1152 journal->j_tail = 0; 1152 journal->j_tail = 0;
1153 journal->j_tail_sequence = ++journal->j_transaction_sequence; 1153 journal->j_tail_sequence = ++journal->j_transaction_sequence;
1154 if (journal->j_sb_buffer) { 1154 if (journal->j_sb_buffer) {
1155 journal_update_superblock(journal, 1); 1155 jbd2_journal_update_superblock(journal, 1);
1156 brelse(journal->j_sb_buffer); 1156 brelse(journal->j_sb_buffer);
1157 } 1157 }
1158 1158
1159 if (journal->j_inode) 1159 if (journal->j_inode)
1160 iput(journal->j_inode); 1160 iput(journal->j_inode);
1161 if (journal->j_revoke) 1161 if (journal->j_revoke)
1162 journal_destroy_revoke(journal); 1162 jbd2_journal_destroy_revoke(journal);
1163 kfree(journal->j_wbuf); 1163 kfree(journal->j_wbuf);
1164 kfree(journal); 1164 kfree(journal);
1165} 1165}
1166 1166
1167 1167
1168/** 1168/**
1169 *int journal_check_used_features () - Check if features specified are used. 1169 *int jbd2_journal_check_used_features () - Check if features specified are used.
1170 * @journal: Journal to check. 1170 * @journal: Journal to check.
1171 * @compat: bitmask of compatible features 1171 * @compat: bitmask of compatible features
1172 * @ro: bitmask of features that force read-only mount 1172 * @ro: bitmask of features that force read-only mount
@@ -1176,7 +1176,7 @@ void journal_destroy(journal_t *journal)
1176 * features. Return true (non-zero) if it does. 1176 * features. Return true (non-zero) if it does.
1177 **/ 1177 **/
1178 1178
1179int journal_check_used_features (journal_t *journal, unsigned long compat, 1179int jbd2_journal_check_used_features (journal_t *journal, unsigned long compat,
1180 unsigned long ro, unsigned long incompat) 1180 unsigned long ro, unsigned long incompat)
1181{ 1181{
1182 journal_superblock_t *sb; 1182 journal_superblock_t *sb;
@@ -1197,7 +1197,7 @@ int journal_check_used_features (journal_t *journal, unsigned long compat,
1197} 1197}
1198 1198
1199/** 1199/**
1200 * int journal_check_available_features() - Check feature set in journalling layer 1200 * int jbd2_journal_check_available_features() - Check feature set in journalling layer
1201 * @journal: Journal to check. 1201 * @journal: Journal to check.
1202 * @compat: bitmask of compatible features 1202 * @compat: bitmask of compatible features
1203 * @ro: bitmask of features that force read-only mount 1203 * @ro: bitmask of features that force read-only mount
@@ -1207,7 +1207,7 @@ int journal_check_used_features (journal_t *journal, unsigned long compat,
1207 * all of a given set of features on this journal. Return true 1207 * all of a given set of features on this journal. Return true
1208 * (non-zero) if it can. */ 1208 * (non-zero) if it can. */
1209 1209
1210int journal_check_available_features (journal_t *journal, unsigned long compat, 1210int jbd2_journal_check_available_features (journal_t *journal, unsigned long compat,
1211 unsigned long ro, unsigned long incompat) 1211 unsigned long ro, unsigned long incompat)
1212{ 1212{
1213 journal_superblock_t *sb; 1213 journal_superblock_t *sb;
@@ -1224,16 +1224,16 @@ int journal_check_available_features (journal_t *journal, unsigned long compat,
1224 if (journal->j_format_version != 2) 1224 if (journal->j_format_version != 2)
1225 return 0; 1225 return 0;
1226 1226
1227 if ((compat & JFS_KNOWN_COMPAT_FEATURES) == compat && 1227 if ((compat & JBD2_KNOWN_COMPAT_FEATURES) == compat &&
1228 (ro & JFS_KNOWN_ROCOMPAT_FEATURES) == ro && 1228 (ro & JBD2_KNOWN_ROCOMPAT_FEATURES) == ro &&
1229 (incompat & JFS_KNOWN_INCOMPAT_FEATURES) == incompat) 1229 (incompat & JBD2_KNOWN_INCOMPAT_FEATURES) == incompat)
1230 return 1; 1230 return 1;
1231 1231
1232 return 0; 1232 return 0;
1233} 1233}
1234 1234
1235/** 1235/**
1236 * int journal_set_features () - Mark a given journal feature in the superblock 1236 * int jbd2_journal_set_features () - Mark a given journal feature in the superblock
1237 * @journal: Journal to act on. 1237 * @journal: Journal to act on.
1238 * @compat: bitmask of compatible features 1238 * @compat: bitmask of compatible features
1239 * @ro: bitmask of features that force read-only mount 1239 * @ro: bitmask of features that force read-only mount
@@ -1244,15 +1244,15 @@ int journal_check_available_features (journal_t *journal, unsigned long compat,
1244 * 1244 *
1245 */ 1245 */
1246 1246
1247int journal_set_features (journal_t *journal, unsigned long compat, 1247int jbd2_journal_set_features (journal_t *journal, unsigned long compat,
1248 unsigned long ro, unsigned long incompat) 1248 unsigned long ro, unsigned long incompat)
1249{ 1249{
1250 journal_superblock_t *sb; 1250 journal_superblock_t *sb;
1251 1251
1252 if (journal_check_used_features(journal, compat, ro, incompat)) 1252 if (jbd2_journal_check_used_features(journal, compat, ro, incompat))
1253 return 1; 1253 return 1;
1254 1254
1255 if (!journal_check_available_features(journal, compat, ro, incompat)) 1255 if (!jbd2_journal_check_available_features(journal, compat, ro, incompat))
1256 return 0; 1256 return 0;
1257 1257
1258 jbd_debug(1, "Setting new features 0x%lx/0x%lx/0x%lx\n", 1258 jbd_debug(1, "Setting new features 0x%lx/0x%lx/0x%lx\n",
@@ -1269,13 +1269,13 @@ int journal_set_features (journal_t *journal, unsigned long compat,
1269 1269
1270 1270
1271/** 1271/**
1272 * int journal_update_format () - Update on-disk journal structure. 1272 * int jbd2_journal_update_format () - Update on-disk journal structure.
1273 * @journal: Journal to act on. 1273 * @journal: Journal to act on.
1274 * 1274 *
1275 * Given an initialised but unloaded journal struct, poke about in the 1275 * Given an initialised but unloaded journal struct, poke about in the
1276 * on-disk structure to update it to the most recent supported version. 1276 * on-disk structure to update it to the most recent supported version.
1277 */ 1277 */
1278int journal_update_format (journal_t *journal) 1278int jbd2_journal_update_format (journal_t *journal)
1279{ 1279{
1280 journal_superblock_t *sb; 1280 journal_superblock_t *sb;
1281 int err; 1281 int err;
@@ -1287,9 +1287,9 @@ int journal_update_format (journal_t *journal)
1287 sb = journal->j_superblock; 1287 sb = journal->j_superblock;
1288 1288
1289 switch (be32_to_cpu(sb->s_header.h_blocktype)) { 1289 switch (be32_to_cpu(sb->s_header.h_blocktype)) {
1290 case JFS_SUPERBLOCK_V2: 1290 case JBD2_SUPERBLOCK_V2:
1291 return 0; 1291 return 0;
1292 case JFS_SUPERBLOCK_V1: 1292 case JBD2_SUPERBLOCK_V1:
1293 return journal_convert_superblock_v1(journal, sb); 1293 return journal_convert_superblock_v1(journal, sb);
1294 default: 1294 default:
1295 break; 1295 break;
@@ -1312,7 +1312,7 @@ static int journal_convert_superblock_v1(journal_t *journal,
1312 memset(&sb->s_feature_compat, 0, blocksize-offset); 1312 memset(&sb->s_feature_compat, 0, blocksize-offset);
1313 1313
1314 sb->s_nr_users = cpu_to_be32(1); 1314 sb->s_nr_users = cpu_to_be32(1);
1315 sb->s_header.h_blocktype = cpu_to_be32(JFS_SUPERBLOCK_V2); 1315 sb->s_header.h_blocktype = cpu_to_be32(JBD2_SUPERBLOCK_V2);
1316 journal->j_format_version = 2; 1316 journal->j_format_version = 2;
1317 1317
1318 bh = journal->j_sb_buffer; 1318 bh = journal->j_sb_buffer;
@@ -1324,7 +1324,7 @@ static int journal_convert_superblock_v1(journal_t *journal,
1324 1324
1325 1325
1326/** 1326/**
1327 * int journal_flush () - Flush journal 1327 * int jbd2_journal_flush () - Flush journal
1328 * @journal: Journal to act on. 1328 * @journal: Journal to act on.
1329 * 1329 *
1330 * Flush all data for a given journal to disk and empty the journal. 1330 * Flush all data for a given journal to disk and empty the journal.
@@ -1332,7 +1332,7 @@ static int journal_convert_superblock_v1(journal_t *journal,
1332 * recovery does not need to happen on remount. 1332 * recovery does not need to happen on remount.
1333 */ 1333 */
1334 1334
1335int journal_flush(journal_t *journal) 1335int jbd2_journal_flush(journal_t *journal)
1336{ 1336{
1337 int err = 0; 1337 int err = 0;
1338 transaction_t *transaction = NULL; 1338 transaction_t *transaction = NULL;
@@ -1343,7 +1343,7 @@ int journal_flush(journal_t *journal)
1343 /* Force everything buffered to the log... */ 1343 /* Force everything buffered to the log... */
1344 if (journal->j_running_transaction) { 1344 if (journal->j_running_transaction) {
1345 transaction = journal->j_running_transaction; 1345 transaction = journal->j_running_transaction;
1346 __log_start_commit(journal, transaction->t_tid); 1346 __jbd2_log_start_commit(journal, transaction->t_tid);
1347 } else if (journal->j_committing_transaction) 1347 } else if (journal->j_committing_transaction)
1348 transaction = journal->j_committing_transaction; 1348 transaction = journal->j_committing_transaction;
1349 1349
@@ -1352,7 +1352,7 @@ int journal_flush(journal_t *journal)
1352 tid_t tid = transaction->t_tid; 1352 tid_t tid = transaction->t_tid;
1353 1353
1354 spin_unlock(&journal->j_state_lock); 1354 spin_unlock(&journal->j_state_lock);
1355 log_wait_commit(journal, tid); 1355 jbd2_log_wait_commit(journal, tid);
1356 } else { 1356 } else {
1357 spin_unlock(&journal->j_state_lock); 1357 spin_unlock(&journal->j_state_lock);
1358 } 1358 }
@@ -1361,11 +1361,11 @@ int journal_flush(journal_t *journal)
1361 spin_lock(&journal->j_list_lock); 1361 spin_lock(&journal->j_list_lock);
1362 while (!err && journal->j_checkpoint_transactions != NULL) { 1362 while (!err && journal->j_checkpoint_transactions != NULL) {
1363 spin_unlock(&journal->j_list_lock); 1363 spin_unlock(&journal->j_list_lock);
1364 err = log_do_checkpoint(journal); 1364 err = jbd2_log_do_checkpoint(journal);
1365 spin_lock(&journal->j_list_lock); 1365 spin_lock(&journal->j_list_lock);
1366 } 1366 }
1367 spin_unlock(&journal->j_list_lock); 1367 spin_unlock(&journal->j_list_lock);
1368 cleanup_journal_tail(journal); 1368 jbd2_cleanup_journal_tail(journal);
1369 1369
1370 /* Finally, mark the journal as really needing no recovery. 1370 /* Finally, mark the journal as really needing no recovery.
1371 * This sets s_start==0 in the underlying superblock, which is 1371 * This sets s_start==0 in the underlying superblock, which is
@@ -1376,7 +1376,7 @@ int journal_flush(journal_t *journal)
1376 old_tail = journal->j_tail; 1376 old_tail = journal->j_tail;
1377 journal->j_tail = 0; 1377 journal->j_tail = 0;
1378 spin_unlock(&journal->j_state_lock); 1378 spin_unlock(&journal->j_state_lock);
1379 journal_update_superblock(journal, 1); 1379 jbd2_journal_update_superblock(journal, 1);
1380 spin_lock(&journal->j_state_lock); 1380 spin_lock(&journal->j_state_lock);
1381 journal->j_tail = old_tail; 1381 journal->j_tail = old_tail;
1382 1382
@@ -1390,24 +1390,24 @@ int journal_flush(journal_t *journal)
1390} 1390}
1391 1391
1392/** 1392/**
1393 * int journal_wipe() - Wipe journal contents 1393 * int jbd2_journal_wipe() - Wipe journal contents
1394 * @journal: Journal to act on. 1394 * @journal: Journal to act on.
1395 * @write: flag (see below) 1395 * @write: flag (see below)
1396 * 1396 *
1397 * Wipe out all of the contents of a journal, safely. This will produce 1397 * Wipe out all of the contents of a journal, safely. This will produce
1398 * a warning if the journal contains any valid recovery information. 1398 * a warning if the journal contains any valid recovery information.
1399 * Must be called between journal_init_*() and journal_load(). 1399 * Must be called between journal_init_*() and jbd2_journal_load().
1400 * 1400 *
1401 * If 'write' is non-zero, then we wipe out the journal on disk; otherwise 1401 * If 'write' is non-zero, then we wipe out the journal on disk; otherwise
1402 * we merely suppress recovery. 1402 * we merely suppress recovery.
1403 */ 1403 */
1404 1404
1405int journal_wipe(journal_t *journal, int write) 1405int jbd2_journal_wipe(journal_t *journal, int write)
1406{ 1406{
1407 journal_superblock_t *sb; 1407 journal_superblock_t *sb;
1408 int err = 0; 1408 int err = 0;
1409 1409
1410 J_ASSERT (!(journal->j_flags & JFS_LOADED)); 1410 J_ASSERT (!(journal->j_flags & JBD2_LOADED));
1411 1411
1412 err = load_superblock(journal); 1412 err = load_superblock(journal);
1413 if (err) 1413 if (err)
@@ -1421,9 +1421,9 @@ int journal_wipe(journal_t *journal, int write)
1421 printk (KERN_WARNING "JBD: %s recovery information on journal\n", 1421 printk (KERN_WARNING "JBD: %s recovery information on journal\n",
1422 write ? "Clearing" : "Ignoring"); 1422 write ? "Clearing" : "Ignoring");
1423 1423
1424 err = journal_skip_recovery(journal); 1424 err = jbd2_journal_skip_recovery(journal);
1425 if (write) 1425 if (write)
1426 journal_update_superblock(journal, 1); 1426 jbd2_journal_update_superblock(journal, 1);
1427 1427
1428 no_recovery: 1428 no_recovery:
1429 return err; 1429 return err;
@@ -1459,22 +1459,22 @@ static const char *journal_dev_name(journal_t *journal, char *buffer)
1459 * Aborts hard --- we mark the abort as occurred, but do _nothing_ else, 1459 * Aborts hard --- we mark the abort as occurred, but do _nothing_ else,
1460 * and don't attempt to make any other journal updates. 1460 * and don't attempt to make any other journal updates.
1461 */ 1461 */
1462void __journal_abort_hard(journal_t *journal) 1462void __jbd2_journal_abort_hard(journal_t *journal)
1463{ 1463{
1464 transaction_t *transaction; 1464 transaction_t *transaction;
1465 char b[BDEVNAME_SIZE]; 1465 char b[BDEVNAME_SIZE];
1466 1466
1467 if (journal->j_flags & JFS_ABORT) 1467 if (journal->j_flags & JBD2_ABORT)
1468 return; 1468 return;
1469 1469
1470 printk(KERN_ERR "Aborting journal on device %s.\n", 1470 printk(KERN_ERR "Aborting journal on device %s.\n",
1471 journal_dev_name(journal, b)); 1471 journal_dev_name(journal, b));
1472 1472
1473 spin_lock(&journal->j_state_lock); 1473 spin_lock(&journal->j_state_lock);
1474 journal->j_flags |= JFS_ABORT; 1474 journal->j_flags |= JBD2_ABORT;
1475 transaction = journal->j_running_transaction; 1475 transaction = journal->j_running_transaction;
1476 if (transaction) 1476 if (transaction)
1477 __log_start_commit(journal, transaction->t_tid); 1477 __jbd2_log_start_commit(journal, transaction->t_tid);
1478 spin_unlock(&journal->j_state_lock); 1478 spin_unlock(&journal->j_state_lock);
1479} 1479}
1480 1480
@@ -1482,20 +1482,20 @@ void __journal_abort_hard(journal_t *journal)
1482 * but don't do any other IO. */ 1482 * but don't do any other IO. */
1483static void __journal_abort_soft (journal_t *journal, int errno) 1483static void __journal_abort_soft (journal_t *journal, int errno)
1484{ 1484{
1485 if (journal->j_flags & JFS_ABORT) 1485 if (journal->j_flags & JBD2_ABORT)
1486 return; 1486 return;
1487 1487
1488 if (!journal->j_errno) 1488 if (!journal->j_errno)
1489 journal->j_errno = errno; 1489 journal->j_errno = errno;
1490 1490
1491 __journal_abort_hard(journal); 1491 __jbd2_journal_abort_hard(journal);
1492 1492
1493 if (errno) 1493 if (errno)
1494 journal_update_superblock(journal, 1); 1494 jbd2_journal_update_superblock(journal, 1);
1495} 1495}
1496 1496
1497/** 1497/**
1498 * void journal_abort () - Shutdown the journal immediately. 1498 * void jbd2_journal_abort () - Shutdown the journal immediately.
1499 * @journal: the journal to shutdown. 1499 * @journal: the journal to shutdown.
1500 * @errno: an error number to record in the journal indicating 1500 * @errno: an error number to record in the journal indicating
1501 * the reason for the shutdown. 1501 * the reason for the shutdown.
@@ -1504,7 +1504,7 @@ static void __journal_abort_soft (journal_t *journal, int errno)
1504 * journal (not of a single transaction). This operation cannot be 1504 * journal (not of a single transaction). This operation cannot be
1505 * undone without closing and reopening the journal. 1505 * undone without closing and reopening the journal.
1506 * 1506 *
1507 * The journal_abort function is intended to support higher level error 1507 * The jbd2_journal_abort function is intended to support higher level error
1508 * recovery mechanisms such as the ext2/ext3 remount-readonly error 1508 * recovery mechanisms such as the ext2/ext3 remount-readonly error
1509 * mode. 1509 * mode.
1510 * 1510 *
@@ -1520,13 +1520,13 @@ static void __journal_abort_soft (journal_t *journal, int errno)
1520 * 1520 *
1521 * Any attempt to get a new transaction handle on a journal which is in 1521 * Any attempt to get a new transaction handle on a journal which is in
1522 * ABORT state will just result in an -EROFS error return. A 1522 * ABORT state will just result in an -EROFS error return. A
1523 * journal_stop on an existing handle will return -EIO if we have 1523 * jbd2_journal_stop on an existing handle will return -EIO if we have
1524 * entered abort state during the update. 1524 * entered abort state during the update.
1525 * 1525 *
1526 * Recursive transactions are not disturbed by journal abort until the 1526 * Recursive transactions are not disturbed by journal abort until the
1527 * final journal_stop, which will receive the -EIO error. 1527 * final jbd2_journal_stop, which will receive the -EIO error.
1528 * 1528 *
1529 * Finally, the journal_abort call allows the caller to supply an errno 1529 * Finally, the jbd2_journal_abort call allows the caller to supply an errno
1530 * which will be recorded (if possible) in the journal superblock. This 1530 * which will be recorded (if possible) in the journal superblock. This
1531 * allows a client to record failure conditions in the middle of a 1531 * allows a client to record failure conditions in the middle of a
1532 * transaction without having to complete the transaction to record the 1532 * transaction without having to complete the transaction to record the
@@ -1540,28 +1540,28 @@ static void __journal_abort_soft (journal_t *journal, int errno)
1540 * 1540 *
1541 */ 1541 */
1542 1542
1543void journal_abort(journal_t *journal, int errno) 1543void jbd2_journal_abort(journal_t *journal, int errno)
1544{ 1544{
1545 __journal_abort_soft(journal, errno); 1545 __journal_abort_soft(journal, errno);
1546} 1546}
1547 1547
1548/** 1548/**
1549 * int journal_errno () - returns the journal's error state. 1549 * int jbd2_journal_errno () - returns the journal's error state.
1550 * @journal: journal to examine. 1550 * @journal: journal to examine.
1551 * 1551 *
1552 * This is the errno numbet set with journal_abort(), the last 1552 * This is the errno numbet set with jbd2_journal_abort(), the last
1553 * time the journal was mounted - if the journal was stopped 1553 * time the journal was mounted - if the journal was stopped
1554 * without calling abort this will be 0. 1554 * without calling abort this will be 0.
1555 * 1555 *
1556 * If the journal has been aborted on this mount time -EROFS will 1556 * If the journal has been aborted on this mount time -EROFS will
1557 * be returned. 1557 * be returned.
1558 */ 1558 */
1559int journal_errno(journal_t *journal) 1559int jbd2_journal_errno(journal_t *journal)
1560{ 1560{
1561 int err; 1561 int err;
1562 1562
1563 spin_lock(&journal->j_state_lock); 1563 spin_lock(&journal->j_state_lock);
1564 if (journal->j_flags & JFS_ABORT) 1564 if (journal->j_flags & JBD2_ABORT)
1565 err = -EROFS; 1565 err = -EROFS;
1566 else 1566 else
1567 err = journal->j_errno; 1567 err = journal->j_errno;
@@ -1570,18 +1570,18 @@ int journal_errno(journal_t *journal)
1570} 1570}
1571 1571
1572/** 1572/**
1573 * int journal_clear_err () - clears the journal's error state 1573 * int jbd2_journal_clear_err () - clears the journal's error state
1574 * @journal: journal to act on. 1574 * @journal: journal to act on.
1575 * 1575 *
1576 * An error must be cleared or Acked to take a FS out of readonly 1576 * An error must be cleared or Acked to take a FS out of readonly
1577 * mode. 1577 * mode.
1578 */ 1578 */
1579int journal_clear_err(journal_t *journal) 1579int jbd2_journal_clear_err(journal_t *journal)
1580{ 1580{
1581 int err = 0; 1581 int err = 0;
1582 1582
1583 spin_lock(&journal->j_state_lock); 1583 spin_lock(&journal->j_state_lock);
1584 if (journal->j_flags & JFS_ABORT) 1584 if (journal->j_flags & JBD2_ABORT)
1585 err = -EROFS; 1585 err = -EROFS;
1586 else 1586 else
1587 journal->j_errno = 0; 1587 journal->j_errno = 0;
@@ -1590,21 +1590,21 @@ int journal_clear_err(journal_t *journal)
1590} 1590}
1591 1591
1592/** 1592/**
1593 * void journal_ack_err() - Ack journal err. 1593 * void jbd2_journal_ack_err() - Ack journal err.
1594 * @journal: journal to act on. 1594 * @journal: journal to act on.
1595 * 1595 *
1596 * An error must be cleared or Acked to take a FS out of readonly 1596 * An error must be cleared or Acked to take a FS out of readonly
1597 * mode. 1597 * mode.
1598 */ 1598 */
1599void journal_ack_err(journal_t *journal) 1599void jbd2_journal_ack_err(journal_t *journal)
1600{ 1600{
1601 spin_lock(&journal->j_state_lock); 1601 spin_lock(&journal->j_state_lock);
1602 if (journal->j_errno) 1602 if (journal->j_errno)
1603 journal->j_flags |= JFS_ACK_ERR; 1603 journal->j_flags |= JBD2_ACK_ERR;
1604 spin_unlock(&journal->j_state_lock); 1604 spin_unlock(&journal->j_state_lock);
1605} 1605}
1606 1606
1607int journal_blocks_per_page(struct inode *inode) 1607int jbd2_journal_blocks_per_page(struct inode *inode)
1608{ 1608{
1609 return 1 << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits); 1609 return 1 << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
1610} 1610}
@@ -1613,7 +1613,7 @@ int journal_blocks_per_page(struct inode *inode)
1613 * Simple support for retrying memory allocations. Introduced to help to 1613 * Simple support for retrying memory allocations. Introduced to help to
1614 * debug different VM deadlock avoidance strategies. 1614 * debug different VM deadlock avoidance strategies.
1615 */ 1615 */
1616void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry) 1616void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
1617{ 1617{
1618 return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0)); 1618 return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
1619} 1619}
@@ -1634,7 +1634,7 @@ static const char *jbd_slab_names[JBD_MAX_SLABS] = {
1634 "jbd_1k", "jbd_2k", "jbd_4k", NULL, "jbd_8k" 1634 "jbd_1k", "jbd_2k", "jbd_4k", NULL, "jbd_8k"
1635}; 1635};
1636 1636
1637static void journal_destroy_jbd_slabs(void) 1637static void jbd2_journal_destroy_jbd_slabs(void)
1638{ 1638{
1639 int i; 1639 int i;
1640 1640
@@ -1645,7 +1645,7 @@ static void journal_destroy_jbd_slabs(void)
1645 } 1645 }
1646} 1646}
1647 1647
1648static int journal_create_jbd_slab(size_t slab_size) 1648static int jbd2_journal_create_jbd_slab(size_t slab_size)
1649{ 1649{
1650 int i = JBD_SLAB_INDEX(slab_size); 1650 int i = JBD_SLAB_INDEX(slab_size);
1651 1651
@@ -1671,7 +1671,7 @@ static int journal_create_jbd_slab(size_t slab_size)
1671 return 0; 1671 return 0;
1672} 1672}
1673 1673
1674void * jbd_slab_alloc(size_t size, gfp_t flags) 1674void * jbd2_slab_alloc(size_t size, gfp_t flags)
1675{ 1675{
1676 int idx; 1676 int idx;
1677 1677
@@ -1680,7 +1680,7 @@ void * jbd_slab_alloc(size_t size, gfp_t flags)
1680 return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL); 1680 return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL);
1681} 1681}
1682 1682
1683void jbd_slab_free(void *ptr, size_t size) 1683void jbd2_slab_free(void *ptr, size_t size)
1684{ 1684{
1685 int idx; 1685 int idx;
1686 1686
@@ -1692,35 +1692,35 @@ void jbd_slab_free(void *ptr, size_t size)
1692/* 1692/*
1693 * Journal_head storage management 1693 * Journal_head storage management
1694 */ 1694 */
1695static kmem_cache_t *journal_head_cache; 1695static kmem_cache_t *jbd2_journal_head_cache;
1696#ifdef CONFIG_JBD_DEBUG 1696#ifdef CONFIG_JBD_DEBUG
1697static atomic_t nr_journal_heads = ATOMIC_INIT(0); 1697static atomic_t nr_journal_heads = ATOMIC_INIT(0);
1698#endif 1698#endif
1699 1699
1700static int journal_init_journal_head_cache(void) 1700static int journal_init_jbd2_journal_head_cache(void)
1701{ 1701{
1702 int retval; 1702 int retval;
1703 1703
1704 J_ASSERT(journal_head_cache == 0); 1704 J_ASSERT(jbd2_journal_head_cache == 0);
1705 journal_head_cache = kmem_cache_create("journal_head", 1705 jbd2_journal_head_cache = kmem_cache_create("journal_head",
1706 sizeof(struct journal_head), 1706 sizeof(struct journal_head),
1707 0, /* offset */ 1707 0, /* offset */
1708 0, /* flags */ 1708 0, /* flags */
1709 NULL, /* ctor */ 1709 NULL, /* ctor */
1710 NULL); /* dtor */ 1710 NULL); /* dtor */
1711 retval = 0; 1711 retval = 0;
1712 if (journal_head_cache == 0) { 1712 if (jbd2_journal_head_cache == 0) {
1713 retval = -ENOMEM; 1713 retval = -ENOMEM;
1714 printk(KERN_EMERG "JBD: no memory for journal_head cache\n"); 1714 printk(KERN_EMERG "JBD: no memory for journal_head cache\n");
1715 } 1715 }
1716 return retval; 1716 return retval;
1717} 1717}
1718 1718
1719static void journal_destroy_journal_head_cache(void) 1719static void jbd2_journal_destroy_jbd2_journal_head_cache(void)
1720{ 1720{
1721 J_ASSERT(journal_head_cache != NULL); 1721 J_ASSERT(jbd2_journal_head_cache != NULL);
1722 kmem_cache_destroy(journal_head_cache); 1722 kmem_cache_destroy(jbd2_journal_head_cache);
1723 journal_head_cache = NULL; 1723 jbd2_journal_head_cache = NULL;
1724} 1724}
1725 1725
1726/* 1726/*
@@ -1734,7 +1734,7 @@ static struct journal_head *journal_alloc_journal_head(void)
1734#ifdef CONFIG_JBD_DEBUG 1734#ifdef CONFIG_JBD_DEBUG
1735 atomic_inc(&nr_journal_heads); 1735 atomic_inc(&nr_journal_heads);
1736#endif 1736#endif
1737 ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS); 1737 ret = kmem_cache_alloc(jbd2_journal_head_cache, GFP_NOFS);
1738 if (ret == 0) { 1738 if (ret == 0) {
1739 jbd_debug(1, "out of memory for journal_head\n"); 1739 jbd_debug(1, "out of memory for journal_head\n");
1740 if (time_after(jiffies, last_warning + 5*HZ)) { 1740 if (time_after(jiffies, last_warning + 5*HZ)) {
@@ -1744,7 +1744,7 @@ static struct journal_head *journal_alloc_journal_head(void)
1744 } 1744 }
1745 while (ret == 0) { 1745 while (ret == 0) {
1746 yield(); 1746 yield();
1747 ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS); 1747 ret = kmem_cache_alloc(jbd2_journal_head_cache, GFP_NOFS);
1748 } 1748 }
1749 } 1749 }
1750 return ret; 1750 return ret;
@@ -1756,7 +1756,7 @@ static void journal_free_journal_head(struct journal_head *jh)
1756 atomic_dec(&nr_journal_heads); 1756 atomic_dec(&nr_journal_heads);
1757 memset(jh, JBD_POISON_FREE, sizeof(*jh)); 1757 memset(jh, JBD_POISON_FREE, sizeof(*jh));
1758#endif 1758#endif
1759 kmem_cache_free(journal_head_cache, jh); 1759 kmem_cache_free(jbd2_journal_head_cache, jh);
1760} 1760}
1761 1761
1762/* 1762/*
@@ -1775,22 +1775,22 @@ static void journal_free_journal_head(struct journal_head *jh)
1775 * 1775 *
1776 * A journal_head may be detached from its buffer_head when the journal_head's 1776 * A journal_head may be detached from its buffer_head when the journal_head's
1777 * b_transaction, b_cp_transaction and b_next_transaction pointers are NULL. 1777 * b_transaction, b_cp_transaction and b_next_transaction pointers are NULL.
1778 * Various places in JBD call journal_remove_journal_head() to indicate that the 1778 * Various places in JBD call jbd2_journal_remove_journal_head() to indicate that the
1779 * journal_head can be dropped if needed. 1779 * journal_head can be dropped if needed.
1780 * 1780 *
1781 * Various places in the kernel want to attach a journal_head to a buffer_head 1781 * Various places in the kernel want to attach a journal_head to a buffer_head
1782 * _before_ attaching the journal_head to a transaction. To protect the 1782 * _before_ attaching the journal_head to a transaction. To protect the
1783 * journal_head in this situation, journal_add_journal_head elevates the 1783 * journal_head in this situation, jbd2_journal_add_journal_head elevates the
1784 * journal_head's b_jcount refcount by one. The caller must call 1784 * journal_head's b_jcount refcount by one. The caller must call
1785 * journal_put_journal_head() to undo this. 1785 * jbd2_journal_put_journal_head() to undo this.
1786 * 1786 *
1787 * So the typical usage would be: 1787 * So the typical usage would be:
1788 * 1788 *
1789 * (Attach a journal_head if needed. Increments b_jcount) 1789 * (Attach a journal_head if needed. Increments b_jcount)
1790 * struct journal_head *jh = journal_add_journal_head(bh); 1790 * struct journal_head *jh = jbd2_journal_add_journal_head(bh);
1791 * ... 1791 * ...
1792 * jh->b_transaction = xxx; 1792 * jh->b_transaction = xxx;
1793 * journal_put_journal_head(jh); 1793 * jbd2_journal_put_journal_head(jh);
1794 * 1794 *
1795 * Now, the journal_head's b_jcount is zero, but it is safe from being released 1795 * Now, the journal_head's b_jcount is zero, but it is safe from being released
1796 * because it has a non-zero b_transaction. 1796 * because it has a non-zero b_transaction.
@@ -1802,7 +1802,7 @@ static void journal_free_journal_head(struct journal_head *jh)
1802 * Doesn't need the journal lock. 1802 * Doesn't need the journal lock.
1803 * May sleep. 1803 * May sleep.
1804 */ 1804 */
1805struct journal_head *journal_add_journal_head(struct buffer_head *bh) 1805struct journal_head *jbd2_journal_add_journal_head(struct buffer_head *bh)
1806{ 1806{
1807 struct journal_head *jh; 1807 struct journal_head *jh;
1808 struct journal_head *new_jh = NULL; 1808 struct journal_head *new_jh = NULL;
@@ -1845,7 +1845,7 @@ repeat:
1845 * Grab a ref against this buffer_head's journal_head. If it ended up not 1845 * Grab a ref against this buffer_head's journal_head. If it ended up not
1846 * having a journal_head, return NULL 1846 * having a journal_head, return NULL
1847 */ 1847 */
1848struct journal_head *journal_grab_journal_head(struct buffer_head *bh) 1848struct journal_head *jbd2_journal_grab_journal_head(struct buffer_head *bh)
1849{ 1849{
1850 struct journal_head *jh = NULL; 1850 struct journal_head *jh = NULL;
1851 1851
@@ -1877,13 +1877,13 @@ static void __journal_remove_journal_head(struct buffer_head *bh)
1877 printk(KERN_WARNING "%s: freeing " 1877 printk(KERN_WARNING "%s: freeing "
1878 "b_frozen_data\n", 1878 "b_frozen_data\n",
1879 __FUNCTION__); 1879 __FUNCTION__);
1880 jbd_slab_free(jh->b_frozen_data, bh->b_size); 1880 jbd2_slab_free(jh->b_frozen_data, bh->b_size);
1881 } 1881 }
1882 if (jh->b_committed_data) { 1882 if (jh->b_committed_data) {
1883 printk(KERN_WARNING "%s: freeing " 1883 printk(KERN_WARNING "%s: freeing "
1884 "b_committed_data\n", 1884 "b_committed_data\n",
1885 __FUNCTION__); 1885 __FUNCTION__);
1886 jbd_slab_free(jh->b_committed_data, bh->b_size); 1886 jbd2_slab_free(jh->b_committed_data, bh->b_size);
1887 } 1887 }
1888 bh->b_private = NULL; 1888 bh->b_private = NULL;
1889 jh->b_bh = NULL; /* debug, really */ 1889 jh->b_bh = NULL; /* debug, really */
@@ -1897,7 +1897,7 @@ static void __journal_remove_journal_head(struct buffer_head *bh)
1897} 1897}
1898 1898
1899/* 1899/*
1900 * journal_remove_journal_head(): if the buffer isn't attached to a transaction 1900 * jbd2_journal_remove_journal_head(): if the buffer isn't attached to a transaction
1901 * and has a zero b_jcount then remove and release its journal_head. If we did 1901 * and has a zero b_jcount then remove and release its journal_head. If we did
1902 * see that the buffer is not used by any transaction we also "logically" 1902 * see that the buffer is not used by any transaction we also "logically"
1903 * decrement ->b_count. 1903 * decrement ->b_count.
@@ -1905,11 +1905,11 @@ static void __journal_remove_journal_head(struct buffer_head *bh)
1905 * We in fact take an additional increment on ->b_count as a convenience, 1905 * We in fact take an additional increment on ->b_count as a convenience,
1906 * because the caller usually wants to do additional things with the bh 1906 * because the caller usually wants to do additional things with the bh
1907 * after calling here. 1907 * after calling here.
1908 * The caller of journal_remove_journal_head() *must* run __brelse(bh) at some 1908 * The caller of jbd2_journal_remove_journal_head() *must* run __brelse(bh) at some
1909 * time. Once the caller has run __brelse(), the buffer is eligible for 1909 * time. Once the caller has run __brelse(), the buffer is eligible for
1910 * reaping by try_to_free_buffers(). 1910 * reaping by try_to_free_buffers().
1911 */ 1911 */
1912void journal_remove_journal_head(struct buffer_head *bh) 1912void jbd2_journal_remove_journal_head(struct buffer_head *bh)
1913{ 1913{
1914 jbd_lock_bh_journal_head(bh); 1914 jbd_lock_bh_journal_head(bh);
1915 __journal_remove_journal_head(bh); 1915 __journal_remove_journal_head(bh);
@@ -1920,7 +1920,7 @@ void journal_remove_journal_head(struct buffer_head *bh)
1920 * Drop a reference on the passed journal_head. If it fell to zero then try to 1920 * Drop a reference on the passed journal_head. If it fell to zero then try to
1921 * release the journal_head from the buffer_head. 1921 * release the journal_head from the buffer_head.
1922 */ 1922 */
1923void journal_put_journal_head(struct journal_head *jh) 1923void jbd2_journal_put_journal_head(struct journal_head *jh)
1924{ 1924{
1925 struct buffer_head *bh = jh2bh(jh); 1925 struct buffer_head *bh = jh2bh(jh);
1926 1926
@@ -1938,8 +1938,8 @@ void journal_put_journal_head(struct journal_head *jh)
1938 * /proc tunables 1938 * /proc tunables
1939 */ 1939 */
1940#if defined(CONFIG_JBD_DEBUG) 1940#if defined(CONFIG_JBD_DEBUG)
1941int journal_enable_debug; 1941int jbd2_journal_enable_debug;
1942EXPORT_SYMBOL(journal_enable_debug); 1942EXPORT_SYMBOL(jbd2_journal_enable_debug);
1943#endif 1943#endif
1944 1944
1945#if defined(CONFIG_JBD_DEBUG) && defined(CONFIG_PROC_FS) 1945#if defined(CONFIG_JBD_DEBUG) && defined(CONFIG_PROC_FS)
@@ -1951,7 +1951,7 @@ static int read_jbd_debug(char *page, char **start, off_t off,
1951{ 1951{
1952 int ret; 1952 int ret;
1953 1953
1954 ret = sprintf(page + off, "%d\n", journal_enable_debug); 1954 ret = sprintf(page + off, "%d\n", jbd2_journal_enable_debug);
1955 *eof = 1; 1955 *eof = 1;
1956 return ret; 1956 return ret;
1957} 1957}
@@ -1966,11 +1966,11 @@ static int write_jbd_debug(struct file *file, const char __user *buffer,
1966 if (copy_from_user(buf, buffer, count)) 1966 if (copy_from_user(buf, buffer, count))
1967 return -EFAULT; 1967 return -EFAULT;
1968 buf[ARRAY_SIZE(buf) - 1] = '\0'; 1968 buf[ARRAY_SIZE(buf) - 1] = '\0';
1969 journal_enable_debug = simple_strtoul(buf, NULL, 10); 1969 jbd2_journal_enable_debug = simple_strtoul(buf, NULL, 10);
1970 return count; 1970 return count;
1971} 1971}
1972 1972
1973#define JBD_PROC_NAME "sys/fs/jbd-debug" 1973#define JBD_PROC_NAME "sys/fs/jbd2-debug"
1974 1974
1975static void __init create_jbd_proc_entry(void) 1975static void __init create_jbd_proc_entry(void)
1976{ 1976{
@@ -1982,7 +1982,7 @@ static void __init create_jbd_proc_entry(void)
1982 } 1982 }
1983} 1983}
1984 1984
1985static void __exit remove_jbd_proc_entry(void) 1985static void __exit jbd2_remove_jbd_proc_entry(void)
1986{ 1986{
1987 if (proc_jbd_debug) 1987 if (proc_jbd_debug)
1988 remove_proc_entry(JBD_PROC_NAME, NULL); 1988 remove_proc_entry(JBD_PROC_NAME, NULL);
@@ -1991,31 +1991,31 @@ static void __exit remove_jbd_proc_entry(void)
1991#else 1991#else
1992 1992
1993#define create_jbd_proc_entry() do {} while (0) 1993#define create_jbd_proc_entry() do {} while (0)
1994#define remove_jbd_proc_entry() do {} while (0) 1994#define jbd2_remove_jbd_proc_entry() do {} while (0)
1995 1995
1996#endif 1996#endif
1997 1997
1998kmem_cache_t *jbd_handle_cache; 1998kmem_cache_t *jbd2_handle_cache;
1999 1999
2000static int __init journal_init_handle_cache(void) 2000static int __init journal_init_handle_cache(void)
2001{ 2001{
2002 jbd_handle_cache = kmem_cache_create("journal_handle", 2002 jbd2_handle_cache = kmem_cache_create("journal_handle",
2003 sizeof(handle_t), 2003 sizeof(handle_t),
2004 0, /* offset */ 2004 0, /* offset */
2005 0, /* flags */ 2005 0, /* flags */
2006 NULL, /* ctor */ 2006 NULL, /* ctor */
2007 NULL); /* dtor */ 2007 NULL); /* dtor */
2008 if (jbd_handle_cache == NULL) { 2008 if (jbd2_handle_cache == NULL) {
2009 printk(KERN_EMERG "JBD: failed to create handle cache\n"); 2009 printk(KERN_EMERG "JBD: failed to create handle cache\n");
2010 return -ENOMEM; 2010 return -ENOMEM;
2011 } 2011 }
2012 return 0; 2012 return 0;
2013} 2013}
2014 2014
2015static void journal_destroy_handle_cache(void) 2015static void jbd2_journal_destroy_handle_cache(void)
2016{ 2016{
2017 if (jbd_handle_cache) 2017 if (jbd2_handle_cache)
2018 kmem_cache_destroy(jbd_handle_cache); 2018 kmem_cache_destroy(jbd2_handle_cache);
2019} 2019}
2020 2020
2021/* 2021/*
@@ -2026,20 +2026,20 @@ static int __init journal_init_caches(void)
2026{ 2026{
2027 int ret; 2027 int ret;
2028 2028
2029 ret = journal_init_revoke_caches(); 2029 ret = jbd2_journal_init_revoke_caches();
2030 if (ret == 0) 2030 if (ret == 0)
2031 ret = journal_init_journal_head_cache(); 2031 ret = journal_init_jbd2_journal_head_cache();
2032 if (ret == 0) 2032 if (ret == 0)
2033 ret = journal_init_handle_cache(); 2033 ret = journal_init_handle_cache();
2034 return ret; 2034 return ret;
2035} 2035}
2036 2036
2037static void journal_destroy_caches(void) 2037static void jbd2_journal_destroy_caches(void)
2038{ 2038{
2039 journal_destroy_revoke_caches(); 2039 jbd2_journal_destroy_revoke_caches();
2040 journal_destroy_journal_head_cache(); 2040 jbd2_journal_destroy_jbd2_journal_head_cache();
2041 journal_destroy_handle_cache(); 2041 jbd2_journal_destroy_handle_cache();
2042 journal_destroy_jbd_slabs(); 2042 jbd2_journal_destroy_jbd_slabs();
2043} 2043}
2044 2044
2045static int __init journal_init(void) 2045static int __init journal_init(void)
@@ -2050,7 +2050,7 @@ static int __init journal_init(void)
2050 2050
2051 ret = journal_init_caches(); 2051 ret = journal_init_caches();
2052 if (ret != 0) 2052 if (ret != 0)
2053 journal_destroy_caches(); 2053 jbd2_journal_destroy_caches();
2054 create_jbd_proc_entry(); 2054 create_jbd_proc_entry();
2055 return ret; 2055 return ret;
2056} 2056}
@@ -2062,8 +2062,8 @@ static void __exit journal_exit(void)
2062 if (n) 2062 if (n)
2063 printk(KERN_EMERG "JBD: leaked %d journal_heads!\n", n); 2063 printk(KERN_EMERG "JBD: leaked %d journal_heads!\n", n);
2064#endif 2064#endif
2065 remove_jbd_proc_entry(); 2065 jbd2_remove_jbd_proc_entry();
2066 journal_destroy_caches(); 2066 jbd2_journal_destroy_caches();
2067} 2067}
2068 2068
2069MODULE_LICENSE("GPL"); 2069MODULE_LICENSE("GPL");
diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index 11563fe2a52b..b2012d112432 100644
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -18,7 +18,7 @@
18#else 18#else
19#include <linux/time.h> 19#include <linux/time.h>
20#include <linux/fs.h> 20#include <linux/fs.h>
21#include <linux/jbd.h> 21#include <linux/jbd2.h>
22#include <linux/errno.h> 22#include <linux/errno.h>
23#include <linux/slab.h> 23#include <linux/slab.h>
24#endif 24#endif
@@ -86,7 +86,7 @@ static int do_readahead(journal_t *journal, unsigned int start)
86 nbufs = 0; 86 nbufs = 0;
87 87
88 for (next = start; next < max; next++) { 88 for (next = start; next < max; next++) {
89 err = journal_bmap(journal, next, &blocknr); 89 err = jbd2_journal_bmap(journal, next, &blocknr);
90 90
91 if (err) { 91 if (err) {
92 printk (KERN_ERR "JBD: bad block at offset %u\n", 92 printk (KERN_ERR "JBD: bad block at offset %u\n",
@@ -142,7 +142,7 @@ static int jread(struct buffer_head **bhp, journal_t *journal,
142 return -EIO; 142 return -EIO;
143 } 143 }
144 144
145 err = journal_bmap(journal, offset, &blocknr); 145 err = jbd2_journal_bmap(journal, offset, &blocknr);
146 146
147 if (err) { 147 if (err) {
148 printk (KERN_ERR "JBD: bad block at offset %u\n", 148 printk (KERN_ERR "JBD: bad block at offset %u\n",
@@ -191,10 +191,10 @@ static int count_tags(struct buffer_head *bh, int size)
191 191
192 nr++; 192 nr++;
193 tagp += sizeof(journal_block_tag_t); 193 tagp += sizeof(journal_block_tag_t);
194 if (!(tag->t_flags & cpu_to_be32(JFS_FLAG_SAME_UUID))) 194 if (!(tag->t_flags & cpu_to_be32(JBD2_FLAG_SAME_UUID)))
195 tagp += 16; 195 tagp += 16;
196 196
197 if (tag->t_flags & cpu_to_be32(JFS_FLAG_LAST_TAG)) 197 if (tag->t_flags & cpu_to_be32(JBD2_FLAG_LAST_TAG))
198 break; 198 break;
199 } 199 }
200 200
@@ -210,7 +210,7 @@ do { \
210} while (0) 210} while (0)
211 211
212/** 212/**
213 * journal_recover - recovers a on-disk journal 213 * jbd2_journal_recover - recovers a on-disk journal
214 * @journal: the journal to recover 214 * @journal: the journal to recover
215 * 215 *
216 * The primary function for recovering the log contents when mounting a 216 * The primary function for recovering the log contents when mounting a
@@ -221,7 +221,7 @@ do { \
221 * blocks. In the third and final pass, we replay any un-revoked blocks 221 * blocks. In the third and final pass, we replay any un-revoked blocks
222 * in the log. 222 * in the log.
223 */ 223 */
224int journal_recover(journal_t *journal) 224int jbd2_journal_recover(journal_t *journal)
225{ 225{
226 int err; 226 int err;
227 journal_superblock_t * sb; 227 journal_superblock_t * sb;
@@ -260,13 +260,13 @@ int journal_recover(journal_t *journal)
260 * any existing commit records in the log. */ 260 * any existing commit records in the log. */
261 journal->j_transaction_sequence = ++info.end_transaction; 261 journal->j_transaction_sequence = ++info.end_transaction;
262 262
263 journal_clear_revoke(journal); 263 jbd2_journal_clear_revoke(journal);
264 sync_blockdev(journal->j_fs_dev); 264 sync_blockdev(journal->j_fs_dev);
265 return err; 265 return err;
266} 266}
267 267
268/** 268/**
269 * journal_skip_recovery - Start journal and wipe exiting records 269 * jbd2_journal_skip_recovery - Start journal and wipe exiting records
270 * @journal: journal to startup 270 * @journal: journal to startup
271 * 271 *
272 * Locate any valid recovery information from the journal and set up the 272 * Locate any valid recovery information from the journal and set up the
@@ -278,7 +278,7 @@ int journal_recover(journal_t *journal)
278 * much recovery information is being erased, and to let us initialise 278 * much recovery information is being erased, and to let us initialise
279 * the journal transaction sequence numbers to the next unused ID. 279 * the journal transaction sequence numbers to the next unused ID.
280 */ 280 */
281int journal_skip_recovery(journal_t *journal) 281int jbd2_journal_skip_recovery(journal_t *journal)
282{ 282{
283 int err; 283 int err;
284 journal_superblock_t * sb; 284 journal_superblock_t * sb;
@@ -387,7 +387,7 @@ static int do_one_pass(journal_t *journal,
387 387
388 tmp = (journal_header_t *)bh->b_data; 388 tmp = (journal_header_t *)bh->b_data;
389 389
390 if (tmp->h_magic != cpu_to_be32(JFS_MAGIC_NUMBER)) { 390 if (tmp->h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER)) {
391 brelse(bh); 391 brelse(bh);
392 break; 392 break;
393 } 393 }
@@ -407,7 +407,7 @@ static int do_one_pass(journal_t *journal,
407 * to do with it? That depends on the pass... */ 407 * to do with it? That depends on the pass... */
408 408
409 switch(blocktype) { 409 switch(blocktype) {
410 case JFS_DESCRIPTOR_BLOCK: 410 case JBD2_DESCRIPTOR_BLOCK:
411 /* If it is a valid descriptor block, replay it 411 /* If it is a valid descriptor block, replay it
412 * in pass REPLAY; otherwise, just skip over the 412 * in pass REPLAY; otherwise, just skip over the
413 * blocks it describes. */ 413 * blocks it describes. */
@@ -451,7 +451,7 @@ static int do_one_pass(journal_t *journal,
451 /* If the block has been 451 /* If the block has been
452 * revoked, then we're all done 452 * revoked, then we're all done
453 * here. */ 453 * here. */
454 if (journal_test_revoke 454 if (jbd2_journal_test_revoke
455 (journal, blocknr, 455 (journal, blocknr,
456 next_commit_ID)) { 456 next_commit_ID)) {
457 brelse(obh); 457 brelse(obh);
@@ -477,9 +477,9 @@ static int do_one_pass(journal_t *journal,
477 lock_buffer(nbh); 477 lock_buffer(nbh);
478 memcpy(nbh->b_data, obh->b_data, 478 memcpy(nbh->b_data, obh->b_data,
479 journal->j_blocksize); 479 journal->j_blocksize);
480 if (flags & JFS_FLAG_ESCAPE) { 480 if (flags & JBD2_FLAG_ESCAPE) {
481 *((__be32 *)bh->b_data) = 481 *((__be32 *)bh->b_data) =
482 cpu_to_be32(JFS_MAGIC_NUMBER); 482 cpu_to_be32(JBD2_MAGIC_NUMBER);
483 } 483 }
484 484
485 BUFFER_TRACE(nbh, "marking dirty"); 485 BUFFER_TRACE(nbh, "marking dirty");
@@ -495,17 +495,17 @@ static int do_one_pass(journal_t *journal,
495 495
496 skip_write: 496 skip_write:
497 tagp += sizeof(journal_block_tag_t); 497 tagp += sizeof(journal_block_tag_t);
498 if (!(flags & JFS_FLAG_SAME_UUID)) 498 if (!(flags & JBD2_FLAG_SAME_UUID))
499 tagp += 16; 499 tagp += 16;
500 500
501 if (flags & JFS_FLAG_LAST_TAG) 501 if (flags & JBD2_FLAG_LAST_TAG)
502 break; 502 break;
503 } 503 }
504 504
505 brelse(bh); 505 brelse(bh);
506 continue; 506 continue;
507 507
508 case JFS_COMMIT_BLOCK: 508 case JBD2_COMMIT_BLOCK:
509 /* Found an expected commit block: not much to 509 /* Found an expected commit block: not much to
510 * do other than move on to the next sequence 510 * do other than move on to the next sequence
511 * number. */ 511 * number. */
@@ -513,7 +513,7 @@ static int do_one_pass(journal_t *journal,
513 next_commit_ID++; 513 next_commit_ID++;
514 continue; 514 continue;
515 515
516 case JFS_REVOKE_BLOCK: 516 case JBD2_REVOKE_BLOCK:
517 /* If we aren't in the REVOKE pass, then we can 517 /* If we aren't in the REVOKE pass, then we can
518 * just skip over this block. */ 518 * just skip over this block. */
519 if (pass != PASS_REVOKE) { 519 if (pass != PASS_REVOKE) {
@@ -570,11 +570,11 @@ static int do_one_pass(journal_t *journal,
570static int scan_revoke_records(journal_t *journal, struct buffer_head *bh, 570static int scan_revoke_records(journal_t *journal, struct buffer_head *bh,
571 tid_t sequence, struct recovery_info *info) 571 tid_t sequence, struct recovery_info *info)
572{ 572{
573 journal_revoke_header_t *header; 573 jbd2_journal_revoke_header_t *header;
574 int offset, max; 574 int offset, max;
575 575
576 header = (journal_revoke_header_t *) bh->b_data; 576 header = (jbd2_journal_revoke_header_t *) bh->b_data;
577 offset = sizeof(journal_revoke_header_t); 577 offset = sizeof(jbd2_journal_revoke_header_t);
578 max = be32_to_cpu(header->r_count); 578 max = be32_to_cpu(header->r_count);
579 579
580 while (offset < max) { 580 while (offset < max) {
@@ -583,7 +583,7 @@ static int scan_revoke_records(journal_t *journal, struct buffer_head *bh,
583 583
584 blocknr = be32_to_cpu(* ((__be32 *) (bh->b_data+offset))); 584 blocknr = be32_to_cpu(* ((__be32 *) (bh->b_data+offset)));
585 offset += 4; 585 offset += 4;
586 err = journal_set_revoke(journal, blocknr, sequence); 586 err = jbd2_journal_set_revoke(journal, blocknr, sequence);
587 if (err) 587 if (err)
588 return err; 588 return err;
589 ++info->nr_revokes; 589 ++info->nr_revokes;
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index c532429d8d9b..2fccddc7acad 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -62,7 +62,7 @@
62#else 62#else
63#include <linux/time.h> 63#include <linux/time.h>
64#include <linux/fs.h> 64#include <linux/fs.h>
65#include <linux/jbd.h> 65#include <linux/jbd2.h>
66#include <linux/errno.h> 66#include <linux/errno.h>
67#include <linux/slab.h> 67#include <linux/slab.h>
68#include <linux/list.h> 68#include <linux/list.h>
@@ -70,14 +70,14 @@
70#include <linux/init.h> 70#include <linux/init.h>
71#endif 71#endif
72 72
73static kmem_cache_t *revoke_record_cache; 73static kmem_cache_t *jbd2_revoke_record_cache;
74static kmem_cache_t *revoke_table_cache; 74static kmem_cache_t *jbd2_revoke_table_cache;
75 75
76/* Each revoke record represents one single revoked block. During 76/* Each revoke record represents one single revoked block. During
77 journal replay, this involves recording the transaction ID of the 77 journal replay, this involves recording the transaction ID of the
78 last transaction to revoke this block. */ 78 last transaction to revoke this block. */
79 79
80struct jbd_revoke_record_s 80struct jbd2_revoke_record_s
81{ 81{
82 struct list_head hash; 82 struct list_head hash;
83 tid_t sequence; /* Used for recovery only */ 83 tid_t sequence; /* Used for recovery only */
@@ -86,7 +86,7 @@ struct jbd_revoke_record_s
86 86
87 87
88/* The revoke table is just a simple hash table of revoke records. */ 88/* The revoke table is just a simple hash table of revoke records. */
89struct jbd_revoke_table_s 89struct jbd2_revoke_table_s
90{ 90{
91 /* It is conceivable that we might want a larger hash table 91 /* It is conceivable that we might want a larger hash table
92 * for recovery. Must be a power of two. */ 92 * for recovery. Must be a power of two. */
@@ -99,7 +99,7 @@ struct jbd_revoke_table_s
99#ifdef __KERNEL__ 99#ifdef __KERNEL__
100static void write_one_revoke_record(journal_t *, transaction_t *, 100static void write_one_revoke_record(journal_t *, transaction_t *,
101 struct journal_head **, int *, 101 struct journal_head **, int *,
102 struct jbd_revoke_record_s *); 102 struct jbd2_revoke_record_s *);
103static void flush_descriptor(journal_t *, struct journal_head *, int); 103static void flush_descriptor(journal_t *, struct journal_head *, int);
104#endif 104#endif
105 105
@@ -108,7 +108,7 @@ static void flush_descriptor(journal_t *, struct journal_head *, int);
108/* Borrowed from buffer.c: this is a tried and tested block hash function */ 108/* Borrowed from buffer.c: this is a tried and tested block hash function */
109static inline int hash(journal_t *journal, unsigned long block) 109static inline int hash(journal_t *journal, unsigned long block)
110{ 110{
111 struct jbd_revoke_table_s *table = journal->j_revoke; 111 struct jbd2_revoke_table_s *table = journal->j_revoke;
112 int hash_shift = table->hash_shift; 112 int hash_shift = table->hash_shift;
113 113
114 return ((block << (hash_shift - 6)) ^ 114 return ((block << (hash_shift - 6)) ^
@@ -120,10 +120,10 @@ static int insert_revoke_hash(journal_t *journal, unsigned long blocknr,
120 tid_t seq) 120 tid_t seq)
121{ 121{
122 struct list_head *hash_list; 122 struct list_head *hash_list;
123 struct jbd_revoke_record_s *record; 123 struct jbd2_revoke_record_s *record;
124 124
125repeat: 125repeat:
126 record = kmem_cache_alloc(revoke_record_cache, GFP_NOFS); 126 record = kmem_cache_alloc(jbd2_revoke_record_cache, GFP_NOFS);
127 if (!record) 127 if (!record)
128 goto oom; 128 goto oom;
129 129
@@ -145,57 +145,57 @@ oom:
145 145
146/* Find a revoke record in the journal's hash table. */ 146/* Find a revoke record in the journal's hash table. */
147 147
148static struct jbd_revoke_record_s *find_revoke_record(journal_t *journal, 148static struct jbd2_revoke_record_s *find_revoke_record(journal_t *journal,
149 unsigned long blocknr) 149 unsigned long blocknr)
150{ 150{
151 struct list_head *hash_list; 151 struct list_head *hash_list;
152 struct jbd_revoke_record_s *record; 152 struct jbd2_revoke_record_s *record;
153 153
154 hash_list = &journal->j_revoke->hash_table[hash(journal, blocknr)]; 154 hash_list = &journal->j_revoke->hash_table[hash(journal, blocknr)];
155 155
156 spin_lock(&journal->j_revoke_lock); 156 spin_lock(&journal->j_revoke_lock);
157 record = (struct jbd_revoke_record_s *) hash_list->next; 157 record = (struct jbd2_revoke_record_s *) hash_list->next;
158 while (&(record->hash) != hash_list) { 158 while (&(record->hash) != hash_list) {
159 if (record->blocknr == blocknr) { 159 if (record->blocknr == blocknr) {
160 spin_unlock(&journal->j_revoke_lock); 160 spin_unlock(&journal->j_revoke_lock);
161 return record; 161 return record;
162 } 162 }
163 record = (struct jbd_revoke_record_s *) record->hash.next; 163 record = (struct jbd2_revoke_record_s *) record->hash.next;
164 } 164 }
165 spin_unlock(&journal->j_revoke_lock); 165 spin_unlock(&journal->j_revoke_lock);
166 return NULL; 166 return NULL;
167} 167}
168 168
169int __init journal_init_revoke_caches(void) 169int __init jbd2_journal_init_revoke_caches(void)
170{ 170{
171 revoke_record_cache = kmem_cache_create("revoke_record", 171 jbd2_revoke_record_cache = kmem_cache_create("revoke_record",
172 sizeof(struct jbd_revoke_record_s), 172 sizeof(struct jbd2_revoke_record_s),
173 0, SLAB_HWCACHE_ALIGN, NULL, NULL); 173 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
174 if (revoke_record_cache == 0) 174 if (jbd2_revoke_record_cache == 0)
175 return -ENOMEM; 175 return -ENOMEM;
176 176
177 revoke_table_cache = kmem_cache_create("revoke_table", 177 jbd2_revoke_table_cache = kmem_cache_create("revoke_table",
178 sizeof(struct jbd_revoke_table_s), 178 sizeof(struct jbd2_revoke_table_s),
179 0, 0, NULL, NULL); 179 0, 0, NULL, NULL);
180 if (revoke_table_cache == 0) { 180 if (jbd2_revoke_table_cache == 0) {
181 kmem_cache_destroy(revoke_record_cache); 181 kmem_cache_destroy(jbd2_revoke_record_cache);
182 revoke_record_cache = NULL; 182 jbd2_revoke_record_cache = NULL;
183 return -ENOMEM; 183 return -ENOMEM;
184 } 184 }
185 return 0; 185 return 0;
186} 186}
187 187
188void journal_destroy_revoke_caches(void) 188void jbd2_journal_destroy_revoke_caches(void)
189{ 189{
190 kmem_cache_destroy(revoke_record_cache); 190 kmem_cache_destroy(jbd2_revoke_record_cache);
191 revoke_record_cache = NULL; 191 jbd2_revoke_record_cache = NULL;
192 kmem_cache_destroy(revoke_table_cache); 192 kmem_cache_destroy(jbd2_revoke_table_cache);
193 revoke_table_cache = NULL; 193 jbd2_revoke_table_cache = NULL;
194} 194}
195 195
196/* Initialise the revoke table for a given journal to a given size. */ 196/* Initialise the revoke table for a given journal to a given size. */
197 197
198int journal_init_revoke(journal_t *journal, int hash_size) 198int jbd2_journal_init_revoke(journal_t *journal, int hash_size)
199{ 199{
200 int shift, tmp; 200 int shift, tmp;
201 201
@@ -206,7 +206,7 @@ int journal_init_revoke(journal_t *journal, int hash_size)
206 while((tmp >>= 1UL) != 0UL) 206 while((tmp >>= 1UL) != 0UL)
207 shift++; 207 shift++;
208 208
209 journal->j_revoke_table[0] = kmem_cache_alloc(revoke_table_cache, GFP_KERNEL); 209 journal->j_revoke_table[0] = kmem_cache_alloc(jbd2_revoke_table_cache, GFP_KERNEL);
210 if (!journal->j_revoke_table[0]) 210 if (!journal->j_revoke_table[0])
211 return -ENOMEM; 211 return -ENOMEM;
212 journal->j_revoke = journal->j_revoke_table[0]; 212 journal->j_revoke = journal->j_revoke_table[0];
@@ -221,7 +221,7 @@ int journal_init_revoke(journal_t *journal, int hash_size)
221 journal->j_revoke->hash_table = 221 journal->j_revoke->hash_table =
222 kmalloc(hash_size * sizeof(struct list_head), GFP_KERNEL); 222 kmalloc(hash_size * sizeof(struct list_head), GFP_KERNEL);
223 if (!journal->j_revoke->hash_table) { 223 if (!journal->j_revoke->hash_table) {
224 kmem_cache_free(revoke_table_cache, journal->j_revoke_table[0]); 224 kmem_cache_free(jbd2_revoke_table_cache, journal->j_revoke_table[0]);
225 journal->j_revoke = NULL; 225 journal->j_revoke = NULL;
226 return -ENOMEM; 226 return -ENOMEM;
227 } 227 }
@@ -229,10 +229,10 @@ int journal_init_revoke(journal_t *journal, int hash_size)
229 for (tmp = 0; tmp < hash_size; tmp++) 229 for (tmp = 0; tmp < hash_size; tmp++)
230 INIT_LIST_HEAD(&journal->j_revoke->hash_table[tmp]); 230 INIT_LIST_HEAD(&journal->j_revoke->hash_table[tmp]);
231 231
232 journal->j_revoke_table[1] = kmem_cache_alloc(revoke_table_cache, GFP_KERNEL); 232 journal->j_revoke_table[1] = kmem_cache_alloc(jbd2_revoke_table_cache, GFP_KERNEL);
233 if (!journal->j_revoke_table[1]) { 233 if (!journal->j_revoke_table[1]) {
234 kfree(journal->j_revoke_table[0]->hash_table); 234 kfree(journal->j_revoke_table[0]->hash_table);
235 kmem_cache_free(revoke_table_cache, journal->j_revoke_table[0]); 235 kmem_cache_free(jbd2_revoke_table_cache, journal->j_revoke_table[0]);
236 return -ENOMEM; 236 return -ENOMEM;
237 } 237 }
238 238
@@ -249,8 +249,8 @@ int journal_init_revoke(journal_t *journal, int hash_size)
249 kmalloc(hash_size * sizeof(struct list_head), GFP_KERNEL); 249 kmalloc(hash_size * sizeof(struct list_head), GFP_KERNEL);
250 if (!journal->j_revoke->hash_table) { 250 if (!journal->j_revoke->hash_table) {
251 kfree(journal->j_revoke_table[0]->hash_table); 251 kfree(journal->j_revoke_table[0]->hash_table);
252 kmem_cache_free(revoke_table_cache, journal->j_revoke_table[0]); 252 kmem_cache_free(jbd2_revoke_table_cache, journal->j_revoke_table[0]);
253 kmem_cache_free(revoke_table_cache, journal->j_revoke_table[1]); 253 kmem_cache_free(jbd2_revoke_table_cache, journal->j_revoke_table[1]);
254 journal->j_revoke = NULL; 254 journal->j_revoke = NULL;
255 return -ENOMEM; 255 return -ENOMEM;
256 } 256 }
@@ -265,9 +265,9 @@ int journal_init_revoke(journal_t *journal, int hash_size)
265 265
266/* Destoy a journal's revoke table. The table must already be empty! */ 266/* Destoy a journal's revoke table. The table must already be empty! */
267 267
268void journal_destroy_revoke(journal_t *journal) 268void jbd2_journal_destroy_revoke(journal_t *journal)
269{ 269{
270 struct jbd_revoke_table_s *table; 270 struct jbd2_revoke_table_s *table;
271 struct list_head *hash_list; 271 struct list_head *hash_list;
272 int i; 272 int i;
273 273
@@ -281,7 +281,7 @@ void journal_destroy_revoke(journal_t *journal)
281 } 281 }
282 282
283 kfree(table->hash_table); 283 kfree(table->hash_table);
284 kmem_cache_free(revoke_table_cache, table); 284 kmem_cache_free(jbd2_revoke_table_cache, table);
285 journal->j_revoke = NULL; 285 journal->j_revoke = NULL;
286 286
287 table = journal->j_revoke_table[1]; 287 table = journal->j_revoke_table[1];
@@ -294,7 +294,7 @@ void journal_destroy_revoke(journal_t *journal)
294 } 294 }
295 295
296 kfree(table->hash_table); 296 kfree(table->hash_table);
297 kmem_cache_free(revoke_table_cache, table); 297 kmem_cache_free(jbd2_revoke_table_cache, table);
298 journal->j_revoke = NULL; 298 journal->j_revoke = NULL;
299} 299}
300 300
@@ -302,7 +302,7 @@ void journal_destroy_revoke(journal_t *journal)
302#ifdef __KERNEL__ 302#ifdef __KERNEL__
303 303
304/* 304/*
305 * journal_revoke: revoke a given buffer_head from the journal. This 305 * jbd2_journal_revoke: revoke a given buffer_head from the journal. This
306 * prevents the block from being replayed during recovery if we take a 306 * prevents the block from being replayed during recovery if we take a
307 * crash after this current transaction commits. Any subsequent 307 * crash after this current transaction commits. Any subsequent
308 * metadata writes of the buffer in this transaction cancel the 308 * metadata writes of the buffer in this transaction cancel the
@@ -314,18 +314,18 @@ void journal_destroy_revoke(journal_t *journal)
314 * revoke before clearing the block bitmap when we are deleting 314 * revoke before clearing the block bitmap when we are deleting
315 * metadata. 315 * metadata.
316 * 316 *
317 * Revoke performs a journal_forget on any buffer_head passed in as a 317 * Revoke performs a jbd2_journal_forget on any buffer_head passed in as a
318 * parameter, but does _not_ forget the buffer_head if the bh was only 318 * parameter, but does _not_ forget the buffer_head if the bh was only
319 * found implicitly. 319 * found implicitly.
320 * 320 *
321 * bh_in may not be a journalled buffer - it may have come off 321 * bh_in may not be a journalled buffer - it may have come off
322 * the hash tables without an attached journal_head. 322 * the hash tables without an attached journal_head.
323 * 323 *
324 * If bh_in is non-zero, journal_revoke() will decrement its b_count 324 * If bh_in is non-zero, jbd2_journal_revoke() will decrement its b_count
325 * by one. 325 * by one.
326 */ 326 */
327 327
328int journal_revoke(handle_t *handle, unsigned long blocknr, 328int jbd2_journal_revoke(handle_t *handle, unsigned long blocknr,
329 struct buffer_head *bh_in) 329 struct buffer_head *bh_in)
330{ 330{
331 struct buffer_head *bh = NULL; 331 struct buffer_head *bh = NULL;
@@ -338,7 +338,7 @@ int journal_revoke(handle_t *handle, unsigned long blocknr,
338 BUFFER_TRACE(bh_in, "enter"); 338 BUFFER_TRACE(bh_in, "enter");
339 339
340 journal = handle->h_transaction->t_journal; 340 journal = handle->h_transaction->t_journal;
341 if (!journal_set_features(journal, 0, 0, JFS_FEATURE_INCOMPAT_REVOKE)){ 341 if (!jbd2_journal_set_features(journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE)){
342 J_ASSERT (!"Cannot set revoke feature!"); 342 J_ASSERT (!"Cannot set revoke feature!");
343 return -EINVAL; 343 return -EINVAL;
344 } 344 }
@@ -386,8 +386,8 @@ int journal_revoke(handle_t *handle, unsigned long blocknr,
386 set_buffer_revoked(bh); 386 set_buffer_revoked(bh);
387 set_buffer_revokevalid(bh); 387 set_buffer_revokevalid(bh);
388 if (bh_in) { 388 if (bh_in) {
389 BUFFER_TRACE(bh_in, "call journal_forget"); 389 BUFFER_TRACE(bh_in, "call jbd2_journal_forget");
390 journal_forget(handle, bh_in); 390 jbd2_journal_forget(handle, bh_in);
391 } else { 391 } else {
392 BUFFER_TRACE(bh, "call brelse"); 392 BUFFER_TRACE(bh, "call brelse");
393 __brelse(bh); 393 __brelse(bh);
@@ -403,7 +403,7 @@ int journal_revoke(handle_t *handle, unsigned long blocknr,
403 403
404/* 404/*
405 * Cancel an outstanding revoke. For use only internally by the 405 * Cancel an outstanding revoke. For use only internally by the
406 * journaling code (called from journal_get_write_access). 406 * journaling code (called from jbd2_journal_get_write_access).
407 * 407 *
408 * We trust buffer_revoked() on the buffer if the buffer is already 408 * We trust buffer_revoked() on the buffer if the buffer is already
409 * being journaled: if there is no revoke pending on the buffer, then we 409 * being journaled: if there is no revoke pending on the buffer, then we
@@ -418,9 +418,9 @@ int journal_revoke(handle_t *handle, unsigned long blocknr,
418 * 418 *
419 * The caller must have the journal locked. 419 * The caller must have the journal locked.
420 */ 420 */
421int journal_cancel_revoke(handle_t *handle, struct journal_head *jh) 421int jbd2_journal_cancel_revoke(handle_t *handle, struct journal_head *jh)
422{ 422{
423 struct jbd_revoke_record_s *record; 423 struct jbd2_revoke_record_s *record;
424 journal_t *journal = handle->h_transaction->t_journal; 424 journal_t *journal = handle->h_transaction->t_journal;
425 int need_cancel; 425 int need_cancel;
426 int did_revoke = 0; /* akpm: debug */ 426 int did_revoke = 0; /* akpm: debug */
@@ -447,7 +447,7 @@ int journal_cancel_revoke(handle_t *handle, struct journal_head *jh)
447 spin_lock(&journal->j_revoke_lock); 447 spin_lock(&journal->j_revoke_lock);
448 list_del(&record->hash); 448 list_del(&record->hash);
449 spin_unlock(&journal->j_revoke_lock); 449 spin_unlock(&journal->j_revoke_lock);
450 kmem_cache_free(revoke_record_cache, record); 450 kmem_cache_free(jbd2_revoke_record_cache, record);
451 did_revoke = 1; 451 did_revoke = 1;
452 } 452 }
453 } 453 }
@@ -478,7 +478,7 @@ int journal_cancel_revoke(handle_t *handle, struct journal_head *jh)
478 * we do not want to suspend any processing until all revokes are 478 * we do not want to suspend any processing until all revokes are
479 * written -bzzz 479 * written -bzzz
480 */ 480 */
481void journal_switch_revoke_table(journal_t *journal) 481void jbd2_journal_switch_revoke_table(journal_t *journal)
482{ 482{
483 int i; 483 int i;
484 484
@@ -498,12 +498,12 @@ void journal_switch_revoke_table(journal_t *journal)
498 * Called with the journal lock held. 498 * Called with the journal lock held.
499 */ 499 */
500 500
501void journal_write_revoke_records(journal_t *journal, 501void jbd2_journal_write_revoke_records(journal_t *journal,
502 transaction_t *transaction) 502 transaction_t *transaction)
503{ 503{
504 struct journal_head *descriptor; 504 struct journal_head *descriptor;
505 struct jbd_revoke_record_s *record; 505 struct jbd2_revoke_record_s *record;
506 struct jbd_revoke_table_s *revoke; 506 struct jbd2_revoke_table_s *revoke;
507 struct list_head *hash_list; 507 struct list_head *hash_list;
508 int i, offset, count; 508 int i, offset, count;
509 509
@@ -519,14 +519,14 @@ void journal_write_revoke_records(journal_t *journal,
519 hash_list = &revoke->hash_table[i]; 519 hash_list = &revoke->hash_table[i];
520 520
521 while (!list_empty(hash_list)) { 521 while (!list_empty(hash_list)) {
522 record = (struct jbd_revoke_record_s *) 522 record = (struct jbd2_revoke_record_s *)
523 hash_list->next; 523 hash_list->next;
524 write_one_revoke_record(journal, transaction, 524 write_one_revoke_record(journal, transaction,
525 &descriptor, &offset, 525 &descriptor, &offset,
526 record); 526 record);
527 count++; 527 count++;
528 list_del(&record->hash); 528 list_del(&record->hash);
529 kmem_cache_free(revoke_record_cache, record); 529 kmem_cache_free(jbd2_revoke_record_cache, record);
530 } 530 }
531 } 531 }
532 if (descriptor) 532 if (descriptor)
@@ -543,7 +543,7 @@ static void write_one_revoke_record(journal_t *journal,
543 transaction_t *transaction, 543 transaction_t *transaction,
544 struct journal_head **descriptorp, 544 struct journal_head **descriptorp,
545 int *offsetp, 545 int *offsetp,
546 struct jbd_revoke_record_s *record) 546 struct jbd2_revoke_record_s *record)
547{ 547{
548 struct journal_head *descriptor; 548 struct journal_head *descriptor;
549 int offset; 549 int offset;
@@ -551,7 +551,7 @@ static void write_one_revoke_record(journal_t *journal,
551 551
552 /* If we are already aborting, this all becomes a noop. We 552 /* If we are already aborting, this all becomes a noop. We
553 still need to go round the loop in 553 still need to go round the loop in
554 journal_write_revoke_records in order to free all of the 554 jbd2_journal_write_revoke_records in order to free all of the
555 revoke records: only the IO to the journal is omitted. */ 555 revoke records: only the IO to the journal is omitted. */
556 if (is_journal_aborted(journal)) 556 if (is_journal_aborted(journal))
557 return; 557 return;
@@ -568,19 +568,19 @@ static void write_one_revoke_record(journal_t *journal,
568 } 568 }
569 569
570 if (!descriptor) { 570 if (!descriptor) {
571 descriptor = journal_get_descriptor_buffer(journal); 571 descriptor = jbd2_journal_get_descriptor_buffer(journal);
572 if (!descriptor) 572 if (!descriptor)
573 return; 573 return;
574 header = (journal_header_t *) &jh2bh(descriptor)->b_data[0]; 574 header = (journal_header_t *) &jh2bh(descriptor)->b_data[0];
575 header->h_magic = cpu_to_be32(JFS_MAGIC_NUMBER); 575 header->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
576 header->h_blocktype = cpu_to_be32(JFS_REVOKE_BLOCK); 576 header->h_blocktype = cpu_to_be32(JBD2_REVOKE_BLOCK);
577 header->h_sequence = cpu_to_be32(transaction->t_tid); 577 header->h_sequence = cpu_to_be32(transaction->t_tid);
578 578
579 /* Record it so that we can wait for IO completion later */ 579 /* Record it so that we can wait for IO completion later */
580 JBUFFER_TRACE(descriptor, "file as BJ_LogCtl"); 580 JBUFFER_TRACE(descriptor, "file as BJ_LogCtl");
581 journal_file_buffer(descriptor, transaction, BJ_LogCtl); 581 jbd2_journal_file_buffer(descriptor, transaction, BJ_LogCtl);
582 582
583 offset = sizeof(journal_revoke_header_t); 583 offset = sizeof(jbd2_journal_revoke_header_t);
584 *descriptorp = descriptor; 584 *descriptorp = descriptor;
585 } 585 }
586 586
@@ -601,7 +601,7 @@ static void flush_descriptor(journal_t *journal,
601 struct journal_head *descriptor, 601 struct journal_head *descriptor,
602 int offset) 602 int offset)
603{ 603{
604 journal_revoke_header_t *header; 604 jbd2_journal_revoke_header_t *header;
605 struct buffer_head *bh = jh2bh(descriptor); 605 struct buffer_head *bh = jh2bh(descriptor);
606 606
607 if (is_journal_aborted(journal)) { 607 if (is_journal_aborted(journal)) {
@@ -609,7 +609,7 @@ static void flush_descriptor(journal_t *journal,
609 return; 609 return;
610 } 610 }
611 611
612 header = (journal_revoke_header_t *) jh2bh(descriptor)->b_data; 612 header = (jbd2_journal_revoke_header_t *) jh2bh(descriptor)->b_data;
613 header->r_count = cpu_to_be32(offset); 613 header->r_count = cpu_to_be32(offset);
614 set_buffer_jwrite(bh); 614 set_buffer_jwrite(bh);
615 BUFFER_TRACE(bh, "write"); 615 BUFFER_TRACE(bh, "write");
@@ -640,11 +640,11 @@ static void flush_descriptor(journal_t *journal,
640 * single block. 640 * single block.
641 */ 641 */
642 642
643int journal_set_revoke(journal_t *journal, 643int jbd2_journal_set_revoke(journal_t *journal,
644 unsigned long blocknr, 644 unsigned long blocknr,
645 tid_t sequence) 645 tid_t sequence)
646{ 646{
647 struct jbd_revoke_record_s *record; 647 struct jbd2_revoke_record_s *record;
648 648
649 record = find_revoke_record(journal, blocknr); 649 record = find_revoke_record(journal, blocknr);
650 if (record) { 650 if (record) {
@@ -664,11 +664,11 @@ int journal_set_revoke(journal_t *journal,
664 * ones, but later transactions still need replayed. 664 * ones, but later transactions still need replayed.
665 */ 665 */
666 666
667int journal_test_revoke(journal_t *journal, 667int jbd2_journal_test_revoke(journal_t *journal,
668 unsigned long blocknr, 668 unsigned long blocknr,
669 tid_t sequence) 669 tid_t sequence)
670{ 670{
671 struct jbd_revoke_record_s *record; 671 struct jbd2_revoke_record_s *record;
672 672
673 record = find_revoke_record(journal, blocknr); 673 record = find_revoke_record(journal, blocknr);
674 if (!record) 674 if (!record)
@@ -683,21 +683,21 @@ int journal_test_revoke(journal_t *journal,
683 * that it can be reused by the running filesystem. 683 * that it can be reused by the running filesystem.
684 */ 684 */
685 685
686void journal_clear_revoke(journal_t *journal) 686void jbd2_journal_clear_revoke(journal_t *journal)
687{ 687{
688 int i; 688 int i;
689 struct list_head *hash_list; 689 struct list_head *hash_list;
690 struct jbd_revoke_record_s *record; 690 struct jbd2_revoke_record_s *record;
691 struct jbd_revoke_table_s *revoke; 691 struct jbd2_revoke_table_s *revoke;
692 692
693 revoke = journal->j_revoke; 693 revoke = journal->j_revoke;
694 694
695 for (i = 0; i < revoke->hash_size; i++) { 695 for (i = 0; i < revoke->hash_size; i++) {
696 hash_list = &revoke->hash_table[i]; 696 hash_list = &revoke->hash_table[i];
697 while (!list_empty(hash_list)) { 697 while (!list_empty(hash_list)) {
698 record = (struct jbd_revoke_record_s*) hash_list->next; 698 record = (struct jbd2_revoke_record_s*) hash_list->next;
699 list_del(&record->hash); 699 list_del(&record->hash);
700 kmem_cache_free(revoke_record_cache, record); 700 kmem_cache_free(jbd2_revoke_record_cache, record);
701 } 701 }
702 } 702 }
703} 703}
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index e1b3c8af4d17..149957bef907 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -19,7 +19,7 @@
19 19
20#include <linux/time.h> 20#include <linux/time.h>
21#include <linux/fs.h> 21#include <linux/fs.h>
22#include <linux/jbd.h> 22#include <linux/jbd2.h>
23#include <linux/errno.h> 23#include <linux/errno.h>
24#include <linux/slab.h> 24#include <linux/slab.h>
25#include <linux/timer.h> 25#include <linux/timer.h>
@@ -28,7 +28,7 @@
28#include <linux/highmem.h> 28#include <linux/highmem.h>
29 29
30/* 30/*
31 * get_transaction: obtain a new transaction_t object. 31 * jbd2_get_transaction: obtain a new transaction_t object.
32 * 32 *
33 * Simply allocate and initialise a new transaction. Create it in 33 * Simply allocate and initialise a new transaction. Create it in
34 * RUNNING state and add it to the current journal (which should not 34 * RUNNING state and add it to the current journal (which should not
@@ -44,7 +44,7 @@
44 */ 44 */
45 45
46static transaction_t * 46static transaction_t *
47get_transaction(journal_t *journal, transaction_t *transaction) 47jbd2_get_transaction(journal_t *journal, transaction_t *transaction)
48{ 48{
49 transaction->t_journal = journal; 49 transaction->t_journal = journal;
50 transaction->t_state = T_RUNNING; 50 transaction->t_state = T_RUNNING;
@@ -115,7 +115,7 @@ repeat:
115 spin_lock(&journal->j_state_lock); 115 spin_lock(&journal->j_state_lock);
116repeat_locked: 116repeat_locked:
117 if (is_journal_aborted(journal) || 117 if (is_journal_aborted(journal) ||
118 (journal->j_errno != 0 && !(journal->j_flags & JFS_ACK_ERR))) { 118 (journal->j_errno != 0 && !(journal->j_flags & JBD2_ACK_ERR))) {
119 spin_unlock(&journal->j_state_lock); 119 spin_unlock(&journal->j_state_lock);
120 ret = -EROFS; 120 ret = -EROFS;
121 goto out; 121 goto out;
@@ -134,7 +134,7 @@ repeat_locked:
134 spin_unlock(&journal->j_state_lock); 134 spin_unlock(&journal->j_state_lock);
135 goto alloc_transaction; 135 goto alloc_transaction;
136 } 136 }
137 get_transaction(journal, new_transaction); 137 jbd2_get_transaction(journal, new_transaction);
138 new_transaction = NULL; 138 new_transaction = NULL;
139 } 139 }
140 140
@@ -175,7 +175,7 @@ repeat_locked:
175 spin_unlock(&transaction->t_handle_lock); 175 spin_unlock(&transaction->t_handle_lock);
176 prepare_to_wait(&journal->j_wait_transaction_locked, &wait, 176 prepare_to_wait(&journal->j_wait_transaction_locked, &wait,
177 TASK_UNINTERRUPTIBLE); 177 TASK_UNINTERRUPTIBLE);
178 __log_start_commit(journal, transaction->t_tid); 178 __jbd2_log_start_commit(journal, transaction->t_tid);
179 spin_unlock(&journal->j_state_lock); 179 spin_unlock(&journal->j_state_lock);
180 schedule(); 180 schedule();
181 finish_wait(&journal->j_wait_transaction_locked, &wait); 181 finish_wait(&journal->j_wait_transaction_locked, &wait);
@@ -205,12 +205,12 @@ repeat_locked:
205 * committing_transaction->t_outstanding_credits plus "enough" for 205 * committing_transaction->t_outstanding_credits plus "enough" for
206 * the log control blocks. 206 * the log control blocks.
207 * Also, this test is inconsitent with the matching one in 207 * Also, this test is inconsitent with the matching one in
208 * journal_extend(). 208 * jbd2_journal_extend().
209 */ 209 */
210 if (__log_space_left(journal) < jbd_space_needed(journal)) { 210 if (__jbd2_log_space_left(journal) < jbd_space_needed(journal)) {
211 jbd_debug(2, "Handle %p waiting for checkpoint...\n", handle); 211 jbd_debug(2, "Handle %p waiting for checkpoint...\n", handle);
212 spin_unlock(&transaction->t_handle_lock); 212 spin_unlock(&transaction->t_handle_lock);
213 __log_wait_for_space(journal); 213 __jbd2_log_wait_for_space(journal);
214 goto repeat_locked; 214 goto repeat_locked;
215 } 215 }
216 216
@@ -223,7 +223,7 @@ repeat_locked:
223 transaction->t_handle_count++; 223 transaction->t_handle_count++;
224 jbd_debug(4, "Handle %p given %d credits (total %d, free %d)\n", 224 jbd_debug(4, "Handle %p given %d credits (total %d, free %d)\n",
225 handle, nblocks, transaction->t_outstanding_credits, 225 handle, nblocks, transaction->t_outstanding_credits,
226 __log_space_left(journal)); 226 __jbd2_log_space_left(journal));
227 spin_unlock(&transaction->t_handle_lock); 227 spin_unlock(&transaction->t_handle_lock);
228 spin_unlock(&journal->j_state_lock); 228 spin_unlock(&journal->j_state_lock);
229out: 229out:
@@ -246,7 +246,7 @@ static handle_t *new_handle(int nblocks)
246} 246}
247 247
248/** 248/**
249 * handle_t *journal_start() - Obtain a new handle. 249 * handle_t *jbd2_journal_start() - Obtain a new handle.
250 * @journal: Journal to start transaction on. 250 * @journal: Journal to start transaction on.
251 * @nblocks: number of block buffer we might modify 251 * @nblocks: number of block buffer we might modify
252 * 252 *
@@ -259,7 +259,7 @@ static handle_t *new_handle(int nblocks)
259 * 259 *
260 * Return a pointer to a newly allocated handle, or NULL on failure 260 * Return a pointer to a newly allocated handle, or NULL on failure
261 */ 261 */
262handle_t *journal_start(journal_t *journal, int nblocks) 262handle_t *jbd2_journal_start(journal_t *journal, int nblocks)
263{ 263{
264 handle_t *handle = journal_current_handle(); 264 handle_t *handle = journal_current_handle();
265 int err; 265 int err;
@@ -289,7 +289,7 @@ handle_t *journal_start(journal_t *journal, int nblocks)
289} 289}
290 290
291/** 291/**
292 * int journal_extend() - extend buffer credits. 292 * int jbd2_journal_extend() - extend buffer credits.
293 * @handle: handle to 'extend' 293 * @handle: handle to 'extend'
294 * @nblocks: nr blocks to try to extend by. 294 * @nblocks: nr blocks to try to extend by.
295 * 295 *
@@ -298,7 +298,7 @@ handle_t *journal_start(journal_t *journal, int nblocks)
298 * a credit for a number of buffer modications in advance, but can 298 * a credit for a number of buffer modications in advance, but can
299 * extend its credit if it needs more. 299 * extend its credit if it needs more.
300 * 300 *
301 * journal_extend tries to give the running handle more buffer credits. 301 * jbd2_journal_extend tries to give the running handle more buffer credits.
302 * It does not guarantee that allocation - this is a best-effort only. 302 * It does not guarantee that allocation - this is a best-effort only.
303 * The calling process MUST be able to deal cleanly with a failure to 303 * The calling process MUST be able to deal cleanly with a failure to
304 * extend here. 304 * extend here.
@@ -308,7 +308,7 @@ handle_t *journal_start(journal_t *journal, int nblocks)
308 * return code < 0 implies an error 308 * return code < 0 implies an error
309 * return code > 0 implies normal transaction-full status. 309 * return code > 0 implies normal transaction-full status.
310 */ 310 */
311int journal_extend(handle_t *handle, int nblocks) 311int jbd2_journal_extend(handle_t *handle, int nblocks)
312{ 312{
313 transaction_t *transaction = handle->h_transaction; 313 transaction_t *transaction = handle->h_transaction;
314 journal_t *journal = transaction->t_journal; 314 journal_t *journal = transaction->t_journal;
@@ -339,7 +339,7 @@ int journal_extend(handle_t *handle, int nblocks)
339 goto unlock; 339 goto unlock;
340 } 340 }
341 341
342 if (wanted > __log_space_left(journal)) { 342 if (wanted > __jbd2_log_space_left(journal)) {
343 jbd_debug(3, "denied handle %p %d blocks: " 343 jbd_debug(3, "denied handle %p %d blocks: "
344 "insufficient log space\n", handle, nblocks); 344 "insufficient log space\n", handle, nblocks);
345 goto unlock; 345 goto unlock;
@@ -360,21 +360,21 @@ out:
360 360
361 361
362/** 362/**
363 * int journal_restart() - restart a handle . 363 * int jbd2_journal_restart() - restart a handle .
364 * @handle: handle to restart 364 * @handle: handle to restart
365 * @nblocks: nr credits requested 365 * @nblocks: nr credits requested
366 * 366 *
367 * Restart a handle for a multi-transaction filesystem 367 * Restart a handle for a multi-transaction filesystem
368 * operation. 368 * operation.
369 * 369 *
370 * If the journal_extend() call above fails to grant new buffer credits 370 * If the jbd2_journal_extend() call above fails to grant new buffer credits
371 * to a running handle, a call to journal_restart will commit the 371 * to a running handle, a call to jbd2_journal_restart will commit the
372 * handle's transaction so far and reattach the handle to a new 372 * handle's transaction so far and reattach the handle to a new
373 * transaction capabable of guaranteeing the requested number of 373 * transaction capabable of guaranteeing the requested number of
374 * credits. 374 * credits.
375 */ 375 */
376 376
377int journal_restart(handle_t *handle, int nblocks) 377int jbd2_journal_restart(handle_t *handle, int nblocks)
378{ 378{
379 transaction_t *transaction = handle->h_transaction; 379 transaction_t *transaction = handle->h_transaction;
380 journal_t *journal = transaction->t_journal; 380 journal_t *journal = transaction->t_journal;
@@ -402,7 +402,7 @@ int journal_restart(handle_t *handle, int nblocks)
402 spin_unlock(&transaction->t_handle_lock); 402 spin_unlock(&transaction->t_handle_lock);
403 403
404 jbd_debug(2, "restarting handle %p\n", handle); 404 jbd_debug(2, "restarting handle %p\n", handle);
405 __log_start_commit(journal, transaction->t_tid); 405 __jbd2_log_start_commit(journal, transaction->t_tid);
406 spin_unlock(&journal->j_state_lock); 406 spin_unlock(&journal->j_state_lock);
407 407
408 handle->h_buffer_credits = nblocks; 408 handle->h_buffer_credits = nblocks;
@@ -412,7 +412,7 @@ int journal_restart(handle_t *handle, int nblocks)
412 412
413 413
414/** 414/**
415 * void journal_lock_updates () - establish a transaction barrier. 415 * void jbd2_journal_lock_updates () - establish a transaction barrier.
416 * @journal: Journal to establish a barrier on. 416 * @journal: Journal to establish a barrier on.
417 * 417 *
418 * This locks out any further updates from being started, and blocks 418 * This locks out any further updates from being started, and blocks
@@ -421,7 +421,7 @@ int journal_restart(handle_t *handle, int nblocks)
421 * 421 *
422 * The journal lock should not be held on entry. 422 * The journal lock should not be held on entry.
423 */ 423 */
424void journal_lock_updates(journal_t *journal) 424void jbd2_journal_lock_updates(journal_t *journal)
425{ 425{
426 DEFINE_WAIT(wait); 426 DEFINE_WAIT(wait);
427 427
@@ -452,7 +452,7 @@ void journal_lock_updates(journal_t *journal)
452 452
453 /* 453 /*
454 * We have now established a barrier against other normal updates, but 454 * We have now established a barrier against other normal updates, but
455 * we also need to barrier against other journal_lock_updates() calls 455 * we also need to barrier against other jbd2_journal_lock_updates() calls
456 * to make sure that we serialise special journal-locked operations 456 * to make sure that we serialise special journal-locked operations
457 * too. 457 * too.
458 */ 458 */
@@ -460,14 +460,14 @@ void journal_lock_updates(journal_t *journal)
460} 460}
461 461
462/** 462/**
463 * void journal_unlock_updates (journal_t* journal) - release barrier 463 * void jbd2_journal_unlock_updates (journal_t* journal) - release barrier
464 * @journal: Journal to release the barrier on. 464 * @journal: Journal to release the barrier on.
465 * 465 *
466 * Release a transaction barrier obtained with journal_lock_updates(). 466 * Release a transaction barrier obtained with jbd2_journal_lock_updates().
467 * 467 *
468 * Should be called without the journal lock held. 468 * Should be called without the journal lock held.
469 */ 469 */
470void journal_unlock_updates (journal_t *journal) 470void jbd2_journal_unlock_updates (journal_t *journal)
471{ 471{
472 J_ASSERT(journal->j_barrier_count != 0); 472 J_ASSERT(journal->j_barrier_count != 0);
473 473
@@ -667,7 +667,7 @@ repeat:
667 JBUFFER_TRACE(jh, "allocate memory for buffer"); 667 JBUFFER_TRACE(jh, "allocate memory for buffer");
668 jbd_unlock_bh_state(bh); 668 jbd_unlock_bh_state(bh);
669 frozen_buffer = 669 frozen_buffer =
670 jbd_slab_alloc(jh2bh(jh)->b_size, 670 jbd2_slab_alloc(jh2bh(jh)->b_size,
671 GFP_NOFS); 671 GFP_NOFS);
672 if (!frozen_buffer) { 672 if (!frozen_buffer) {
673 printk(KERN_EMERG 673 printk(KERN_EMERG
@@ -699,7 +699,7 @@ repeat:
699 jh->b_transaction = transaction; 699 jh->b_transaction = transaction;
700 JBUFFER_TRACE(jh, "file as BJ_Reserved"); 700 JBUFFER_TRACE(jh, "file as BJ_Reserved");
701 spin_lock(&journal->j_list_lock); 701 spin_lock(&journal->j_list_lock);
702 __journal_file_buffer(jh, transaction, BJ_Reserved); 702 __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved);
703 spin_unlock(&journal->j_list_lock); 703 spin_unlock(&journal->j_list_lock);
704 } 704 }
705 705
@@ -723,18 +723,18 @@ done:
723 * If we are about to journal a buffer, then any revoke pending on it is 723 * If we are about to journal a buffer, then any revoke pending on it is
724 * no longer valid 724 * no longer valid
725 */ 725 */
726 journal_cancel_revoke(handle, jh); 726 jbd2_journal_cancel_revoke(handle, jh);
727 727
728out: 728out:
729 if (unlikely(frozen_buffer)) /* It's usually NULL */ 729 if (unlikely(frozen_buffer)) /* It's usually NULL */
730 jbd_slab_free(frozen_buffer, bh->b_size); 730 jbd2_slab_free(frozen_buffer, bh->b_size);
731 731
732 JBUFFER_TRACE(jh, "exit"); 732 JBUFFER_TRACE(jh, "exit");
733 return error; 733 return error;
734} 734}
735 735
736/** 736/**
737 * int journal_get_write_access() - notify intent to modify a buffer for metadata (not data) update. 737 * int jbd2_journal_get_write_access() - notify intent to modify a buffer for metadata (not data) update.
738 * @handle: transaction to add buffer modifications to 738 * @handle: transaction to add buffer modifications to
739 * @bh: bh to be used for metadata writes 739 * @bh: bh to be used for metadata writes
740 * @credits: variable that will receive credits for the buffer 740 * @credits: variable that will receive credits for the buffer
@@ -745,16 +745,16 @@ out:
745 * because we're write()ing a buffer which is also part of a shared mapping. 745 * because we're write()ing a buffer which is also part of a shared mapping.
746 */ 746 */
747 747
748int journal_get_write_access(handle_t *handle, struct buffer_head *bh) 748int jbd2_journal_get_write_access(handle_t *handle, struct buffer_head *bh)
749{ 749{
750 struct journal_head *jh = journal_add_journal_head(bh); 750 struct journal_head *jh = jbd2_journal_add_journal_head(bh);
751 int rc; 751 int rc;
752 752
753 /* We do not want to get caught playing with fields which the 753 /* We do not want to get caught playing with fields which the
754 * log thread also manipulates. Make sure that the buffer 754 * log thread also manipulates. Make sure that the buffer
755 * completes any outstanding IO before proceeding. */ 755 * completes any outstanding IO before proceeding. */
756 rc = do_get_write_access(handle, jh, 0); 756 rc = do_get_write_access(handle, jh, 0);
757 journal_put_journal_head(jh); 757 jbd2_journal_put_journal_head(jh);
758 return rc; 758 return rc;
759} 759}
760 760
@@ -772,17 +772,17 @@ int journal_get_write_access(handle_t *handle, struct buffer_head *bh)
772 * unlocked buffer beforehand. */ 772 * unlocked buffer beforehand. */
773 773
774/** 774/**
775 * int journal_get_create_access () - notify intent to use newly created bh 775 * int jbd2_journal_get_create_access () - notify intent to use newly created bh
776 * @handle: transaction to new buffer to 776 * @handle: transaction to new buffer to
777 * @bh: new buffer. 777 * @bh: new buffer.
778 * 778 *
779 * Call this if you create a new bh. 779 * Call this if you create a new bh.
780 */ 780 */
781int journal_get_create_access(handle_t *handle, struct buffer_head *bh) 781int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh)
782{ 782{
783 transaction_t *transaction = handle->h_transaction; 783 transaction_t *transaction = handle->h_transaction;
784 journal_t *journal = transaction->t_journal; 784 journal_t *journal = transaction->t_journal;
785 struct journal_head *jh = journal_add_journal_head(bh); 785 struct journal_head *jh = jbd2_journal_add_journal_head(bh);
786 int err; 786 int err;
787 787
788 jbd_debug(5, "journal_head %p\n", jh); 788 jbd_debug(5, "journal_head %p\n", jh);
@@ -812,7 +812,7 @@ int journal_get_create_access(handle_t *handle, struct buffer_head *bh)
812 if (jh->b_transaction == NULL) { 812 if (jh->b_transaction == NULL) {
813 jh->b_transaction = transaction; 813 jh->b_transaction = transaction;
814 JBUFFER_TRACE(jh, "file as BJ_Reserved"); 814 JBUFFER_TRACE(jh, "file as BJ_Reserved");
815 __journal_file_buffer(jh, transaction, BJ_Reserved); 815 __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved);
816 } else if (jh->b_transaction == journal->j_committing_transaction) { 816 } else if (jh->b_transaction == journal->j_committing_transaction) {
817 JBUFFER_TRACE(jh, "set next transaction"); 817 JBUFFER_TRACE(jh, "set next transaction");
818 jh->b_next_transaction = transaction; 818 jh->b_next_transaction = transaction;
@@ -828,14 +828,14 @@ int journal_get_create_access(handle_t *handle, struct buffer_head *bh)
828 * which hits an assertion error. 828 * which hits an assertion error.
829 */ 829 */
830 JBUFFER_TRACE(jh, "cancelling revoke"); 830 JBUFFER_TRACE(jh, "cancelling revoke");
831 journal_cancel_revoke(handle, jh); 831 jbd2_journal_cancel_revoke(handle, jh);
832 journal_put_journal_head(jh); 832 jbd2_journal_put_journal_head(jh);
833out: 833out:
834 return err; 834 return err;
835} 835}
836 836
837/** 837/**
838 * int journal_get_undo_access() - Notify intent to modify metadata with 838 * int jbd2_journal_get_undo_access() - Notify intent to modify metadata with
839 * non-rewindable consequences 839 * non-rewindable consequences
840 * @handle: transaction 840 * @handle: transaction
841 * @bh: buffer to undo 841 * @bh: buffer to undo
@@ -848,7 +848,7 @@ out:
848 * since if we overwrote that space we would make the delete 848 * since if we overwrote that space we would make the delete
849 * un-rewindable in case of a crash. 849 * un-rewindable in case of a crash.
850 * 850 *
851 * To deal with that, journal_get_undo_access requests write access to a 851 * To deal with that, jbd2_journal_get_undo_access requests write access to a
852 * buffer for parts of non-rewindable operations such as delete 852 * buffer for parts of non-rewindable operations such as delete
853 * operations on the bitmaps. The journaling code must keep a copy of 853 * operations on the bitmaps. The journaling code must keep a copy of
854 * the buffer's contents prior to the undo_access call until such time 854 * the buffer's contents prior to the undo_access call until such time
@@ -861,10 +861,10 @@ out:
861 * 861 *
862 * Returns error number or 0 on success. 862 * Returns error number or 0 on success.
863 */ 863 */
864int journal_get_undo_access(handle_t *handle, struct buffer_head *bh) 864int jbd2_journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
865{ 865{
866 int err; 866 int err;
867 struct journal_head *jh = journal_add_journal_head(bh); 867 struct journal_head *jh = jbd2_journal_add_journal_head(bh);
868 char *committed_data = NULL; 868 char *committed_data = NULL;
869 869
870 JBUFFER_TRACE(jh, "entry"); 870 JBUFFER_TRACE(jh, "entry");
@@ -880,7 +880,7 @@ int journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
880 880
881repeat: 881repeat:
882 if (!jh->b_committed_data) { 882 if (!jh->b_committed_data) {
883 committed_data = jbd_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS); 883 committed_data = jbd2_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
884 if (!committed_data) { 884 if (!committed_data) {
885 printk(KERN_EMERG "%s: No memory for committed data\n", 885 printk(KERN_EMERG "%s: No memory for committed data\n",
886 __FUNCTION__); 886 __FUNCTION__);
@@ -905,14 +905,14 @@ repeat:
905 } 905 }
906 jbd_unlock_bh_state(bh); 906 jbd_unlock_bh_state(bh);
907out: 907out:
908 journal_put_journal_head(jh); 908 jbd2_journal_put_journal_head(jh);
909 if (unlikely(committed_data)) 909 if (unlikely(committed_data))
910 jbd_slab_free(committed_data, bh->b_size); 910 jbd2_slab_free(committed_data, bh->b_size);
911 return err; 911 return err;
912} 912}
913 913
914/** 914/**
915 * int journal_dirty_data() - mark a buffer as containing dirty data which 915 * int jbd2_journal_dirty_data() - mark a buffer as containing dirty data which
916 * needs to be flushed before we can commit the 916 * needs to be flushed before we can commit the
917 * current transaction. 917 * current transaction.
918 * @handle: transaction 918 * @handle: transaction
@@ -923,10 +923,10 @@ out:
923 * 923 *
924 * Returns error number or 0 on success. 924 * Returns error number or 0 on success.
925 * 925 *
926 * journal_dirty_data() can be called via page_launder->ext3_writepage 926 * jbd2_journal_dirty_data() can be called via page_launder->ext3_writepage
927 * by kswapd. 927 * by kswapd.
928 */ 928 */
929int journal_dirty_data(handle_t *handle, struct buffer_head *bh) 929int jbd2_journal_dirty_data(handle_t *handle, struct buffer_head *bh)
930{ 930{
931 journal_t *journal = handle->h_transaction->t_journal; 931 journal_t *journal = handle->h_transaction->t_journal;
932 int need_brelse = 0; 932 int need_brelse = 0;
@@ -935,7 +935,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
935 if (is_handle_aborted(handle)) 935 if (is_handle_aborted(handle))
936 return 0; 936 return 0;
937 937
938 jh = journal_add_journal_head(bh); 938 jh = jbd2_journal_add_journal_head(bh);
939 JBUFFER_TRACE(jh, "entry"); 939 JBUFFER_TRACE(jh, "entry");
940 940
941 /* 941 /*
@@ -984,7 +984,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
984 * And while we're in that state, someone does a 984 * And while we're in that state, someone does a
985 * writepage() in an attempt to pageout the same area 985 * writepage() in an attempt to pageout the same area
986 * of the file via a shared mapping. At present that 986 * of the file via a shared mapping. At present that
987 * calls journal_dirty_data(), and we get right here. 987 * calls jbd2_journal_dirty_data(), and we get right here.
988 * It may be too late to journal the data. Simply 988 * It may be too late to journal the data. Simply
989 * falling through to the next test will suffice: the 989 * falling through to the next test will suffice: the
990 * data will be dirty and wil be checkpointed. The 990 * data will be dirty and wil be checkpointed. The
@@ -1035,7 +1035,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
1035 /* journal_clean_data_list() may have got there first */ 1035 /* journal_clean_data_list() may have got there first */
1036 if (jh->b_transaction != NULL) { 1036 if (jh->b_transaction != NULL) {
1037 JBUFFER_TRACE(jh, "unfile from commit"); 1037 JBUFFER_TRACE(jh, "unfile from commit");
1038 __journal_temp_unlink_buffer(jh); 1038 __jbd2_journal_temp_unlink_buffer(jh);
1039 /* It still points to the committing 1039 /* It still points to the committing
1040 * transaction; move it to this one so 1040 * transaction; move it to this one so
1041 * that the refile assert checks are 1041 * that the refile assert checks are
@@ -1054,15 +1054,15 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh)
1054 if (jh->b_jlist != BJ_SyncData && jh->b_jlist != BJ_Locked) { 1054 if (jh->b_jlist != BJ_SyncData && jh->b_jlist != BJ_Locked) {
1055 JBUFFER_TRACE(jh, "not on correct data list: unfile"); 1055 JBUFFER_TRACE(jh, "not on correct data list: unfile");
1056 J_ASSERT_JH(jh, jh->b_jlist != BJ_Shadow); 1056 J_ASSERT_JH(jh, jh->b_jlist != BJ_Shadow);
1057 __journal_temp_unlink_buffer(jh); 1057 __jbd2_journal_temp_unlink_buffer(jh);
1058 jh->b_transaction = handle->h_transaction; 1058 jh->b_transaction = handle->h_transaction;
1059 JBUFFER_TRACE(jh, "file as data"); 1059 JBUFFER_TRACE(jh, "file as data");
1060 __journal_file_buffer(jh, handle->h_transaction, 1060 __jbd2_journal_file_buffer(jh, handle->h_transaction,
1061 BJ_SyncData); 1061 BJ_SyncData);
1062 } 1062 }
1063 } else { 1063 } else {
1064 JBUFFER_TRACE(jh, "not on a transaction"); 1064 JBUFFER_TRACE(jh, "not on a transaction");
1065 __journal_file_buffer(jh, handle->h_transaction, BJ_SyncData); 1065 __jbd2_journal_file_buffer(jh, handle->h_transaction, BJ_SyncData);
1066 } 1066 }
1067no_journal: 1067no_journal:
1068 spin_unlock(&journal->j_list_lock); 1068 spin_unlock(&journal->j_list_lock);
@@ -1072,12 +1072,12 @@ no_journal:
1072 __brelse(bh); 1072 __brelse(bh);
1073 } 1073 }
1074 JBUFFER_TRACE(jh, "exit"); 1074 JBUFFER_TRACE(jh, "exit");
1075 journal_put_journal_head(jh); 1075 jbd2_journal_put_journal_head(jh);
1076 return 0; 1076 return 0;
1077} 1077}
1078 1078
1079/** 1079/**
1080 * int journal_dirty_metadata() - mark a buffer as containing dirty metadata 1080 * int jbd2_journal_dirty_metadata() - mark a buffer as containing dirty metadata
1081 * @handle: transaction to add buffer to. 1081 * @handle: transaction to add buffer to.
1082 * @bh: buffer to mark 1082 * @bh: buffer to mark
1083 * 1083 *
@@ -1095,7 +1095,7 @@ no_journal:
1095 * buffer: that only gets done when the old transaction finally 1095 * buffer: that only gets done when the old transaction finally
1096 * completes its commit. 1096 * completes its commit.
1097 */ 1097 */
1098int journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) 1098int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
1099{ 1099{
1100 transaction_t *transaction = handle->h_transaction; 1100 transaction_t *transaction = handle->h_transaction;
1101 journal_t *journal = transaction->t_journal; 1101 journal_t *journal = transaction->t_journal;
@@ -1156,7 +1156,7 @@ int journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
1156 1156
1157 JBUFFER_TRACE(jh, "file as BJ_Metadata"); 1157 JBUFFER_TRACE(jh, "file as BJ_Metadata");
1158 spin_lock(&journal->j_list_lock); 1158 spin_lock(&journal->j_list_lock);
1159 __journal_file_buffer(jh, handle->h_transaction, BJ_Metadata); 1159 __jbd2_journal_file_buffer(jh, handle->h_transaction, BJ_Metadata);
1160 spin_unlock(&journal->j_list_lock); 1160 spin_unlock(&journal->j_list_lock);
1161out_unlock_bh: 1161out_unlock_bh:
1162 jbd_unlock_bh_state(bh); 1162 jbd_unlock_bh_state(bh);
@@ -1166,18 +1166,18 @@ out:
1166} 1166}
1167 1167
1168/* 1168/*
1169 * journal_release_buffer: undo a get_write_access without any buffer 1169 * jbd2_journal_release_buffer: undo a get_write_access without any buffer
1170 * updates, if the update decided in the end that it didn't need access. 1170 * updates, if the update decided in the end that it didn't need access.
1171 * 1171 *
1172 */ 1172 */
1173void 1173void
1174journal_release_buffer(handle_t *handle, struct buffer_head *bh) 1174jbd2_journal_release_buffer(handle_t *handle, struct buffer_head *bh)
1175{ 1175{
1176 BUFFER_TRACE(bh, "entry"); 1176 BUFFER_TRACE(bh, "entry");
1177} 1177}
1178 1178
1179/** 1179/**
1180 * void journal_forget() - bforget() for potentially-journaled buffers. 1180 * void jbd2_journal_forget() - bforget() for potentially-journaled buffers.
1181 * @handle: transaction handle 1181 * @handle: transaction handle
1182 * @bh: bh to 'forget' 1182 * @bh: bh to 'forget'
1183 * 1183 *
@@ -1193,7 +1193,7 @@ journal_release_buffer(handle_t *handle, struct buffer_head *bh)
1193 * Allow this call even if the handle has aborted --- it may be part of 1193 * Allow this call even if the handle has aborted --- it may be part of
1194 * the caller's cleanup after an abort. 1194 * the caller's cleanup after an abort.
1195 */ 1195 */
1196int journal_forget (handle_t *handle, struct buffer_head *bh) 1196int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh)
1197{ 1197{
1198 transaction_t *transaction = handle->h_transaction; 1198 transaction_t *transaction = handle->h_transaction;
1199 journal_t *journal = transaction->t_journal; 1199 journal_t *journal = transaction->t_journal;
@@ -1250,11 +1250,11 @@ int journal_forget (handle_t *handle, struct buffer_head *bh)
1250 */ 1250 */
1251 1251
1252 if (jh->b_cp_transaction) { 1252 if (jh->b_cp_transaction) {
1253 __journal_temp_unlink_buffer(jh); 1253 __jbd2_journal_temp_unlink_buffer(jh);
1254 __journal_file_buffer(jh, transaction, BJ_Forget); 1254 __jbd2_journal_file_buffer(jh, transaction, BJ_Forget);
1255 } else { 1255 } else {
1256 __journal_unfile_buffer(jh); 1256 __jbd2_journal_unfile_buffer(jh);
1257 journal_remove_journal_head(bh); 1257 jbd2_journal_remove_journal_head(bh);
1258 __brelse(bh); 1258 __brelse(bh);
1259 if (!buffer_jbd(bh)) { 1259 if (!buffer_jbd(bh)) {
1260 spin_unlock(&journal->j_list_lock); 1260 spin_unlock(&journal->j_list_lock);
@@ -1292,7 +1292,7 @@ drop:
1292} 1292}
1293 1293
1294/** 1294/**
1295 * int journal_stop() - complete a transaction 1295 * int jbd2_journal_stop() - complete a transaction
1296 * @handle: tranaction to complete. 1296 * @handle: tranaction to complete.
1297 * 1297 *
1298 * All done for a particular handle. 1298 * All done for a particular handle.
@@ -1302,12 +1302,12 @@ drop:
1302 * complication is that we need to start a commit operation if the 1302 * complication is that we need to start a commit operation if the
1303 * filesystem is marked for synchronous update. 1303 * filesystem is marked for synchronous update.
1304 * 1304 *
1305 * journal_stop itself will not usually return an error, but it may 1305 * jbd2_journal_stop itself will not usually return an error, but it may
1306 * do so in unusual circumstances. In particular, expect it to 1306 * do so in unusual circumstances. In particular, expect it to
1307 * return -EIO if a journal_abort has been executed since the 1307 * return -EIO if a jbd2_journal_abort has been executed since the
1308 * transaction began. 1308 * transaction began.
1309 */ 1309 */
1310int journal_stop(handle_t *handle) 1310int jbd2_journal_stop(handle_t *handle)
1311{ 1311{
1312 transaction_t *transaction = handle->h_transaction; 1312 transaction_t *transaction = handle->h_transaction;
1313 journal_t *journal = transaction->t_journal; 1313 journal_t *journal = transaction->t_journal;
@@ -1383,15 +1383,15 @@ int journal_stop(handle_t *handle)
1383 jbd_debug(2, "transaction too old, requesting commit for " 1383 jbd_debug(2, "transaction too old, requesting commit for "
1384 "handle %p\n", handle); 1384 "handle %p\n", handle);
1385 /* This is non-blocking */ 1385 /* This is non-blocking */
1386 __log_start_commit(journal, transaction->t_tid); 1386 __jbd2_log_start_commit(journal, transaction->t_tid);
1387 spin_unlock(&journal->j_state_lock); 1387 spin_unlock(&journal->j_state_lock);
1388 1388
1389 /* 1389 /*
1390 * Special case: JFS_SYNC synchronous updates require us 1390 * Special case: JBD2_SYNC synchronous updates require us
1391 * to wait for the commit to complete. 1391 * to wait for the commit to complete.
1392 */ 1392 */
1393 if (handle->h_sync && !(current->flags & PF_MEMALLOC)) 1393 if (handle->h_sync && !(current->flags & PF_MEMALLOC))
1394 err = log_wait_commit(journal, tid); 1394 err = jbd2_log_wait_commit(journal, tid);
1395 } else { 1395 } else {
1396 spin_unlock(&transaction->t_handle_lock); 1396 spin_unlock(&transaction->t_handle_lock);
1397 spin_unlock(&journal->j_state_lock); 1397 spin_unlock(&journal->j_state_lock);
@@ -1401,24 +1401,24 @@ int journal_stop(handle_t *handle)
1401 return err; 1401 return err;
1402} 1402}
1403 1403
1404/**int journal_force_commit() - force any uncommitted transactions 1404/**int jbd2_journal_force_commit() - force any uncommitted transactions
1405 * @journal: journal to force 1405 * @journal: journal to force
1406 * 1406 *
1407 * For synchronous operations: force any uncommitted transactions 1407 * For synchronous operations: force any uncommitted transactions
1408 * to disk. May seem kludgy, but it reuses all the handle batching 1408 * to disk. May seem kludgy, but it reuses all the handle batching
1409 * code in a very simple manner. 1409 * code in a very simple manner.
1410 */ 1410 */
1411int journal_force_commit(journal_t *journal) 1411int jbd2_journal_force_commit(journal_t *journal)
1412{ 1412{
1413 handle_t *handle; 1413 handle_t *handle;
1414 int ret; 1414 int ret;
1415 1415
1416 handle = journal_start(journal, 1); 1416 handle = jbd2_journal_start(journal, 1);
1417 if (IS_ERR(handle)) { 1417 if (IS_ERR(handle)) {
1418 ret = PTR_ERR(handle); 1418 ret = PTR_ERR(handle);
1419 } else { 1419 } else {
1420 handle->h_sync = 1; 1420 handle->h_sync = 1;
1421 ret = journal_stop(handle); 1421 ret = jbd2_journal_stop(handle);
1422 } 1422 }
1423 return ret; 1423 return ret;
1424} 1424}
@@ -1486,7 +1486,7 @@ __blist_del_buffer(struct journal_head **list, struct journal_head *jh)
1486 * 1486 *
1487 * Called under j_list_lock. The journal may not be locked. 1487 * Called under j_list_lock. The journal may not be locked.
1488 */ 1488 */
1489void __journal_temp_unlink_buffer(struct journal_head *jh) 1489void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
1490{ 1490{
1491 struct journal_head **list = NULL; 1491 struct journal_head **list = NULL;
1492 transaction_t *transaction; 1492 transaction_t *transaction;
@@ -1538,23 +1538,23 @@ void __journal_temp_unlink_buffer(struct journal_head *jh)
1538 mark_buffer_dirty(bh); /* Expose it to the VM */ 1538 mark_buffer_dirty(bh); /* Expose it to the VM */
1539} 1539}
1540 1540
1541void __journal_unfile_buffer(struct journal_head *jh) 1541void __jbd2_journal_unfile_buffer(struct journal_head *jh)
1542{ 1542{
1543 __journal_temp_unlink_buffer(jh); 1543 __jbd2_journal_temp_unlink_buffer(jh);
1544 jh->b_transaction = NULL; 1544 jh->b_transaction = NULL;
1545} 1545}
1546 1546
1547void journal_unfile_buffer(journal_t *journal, struct journal_head *jh) 1547void jbd2_journal_unfile_buffer(journal_t *journal, struct journal_head *jh)
1548{ 1548{
1549 jbd_lock_bh_state(jh2bh(jh)); 1549 jbd_lock_bh_state(jh2bh(jh));
1550 spin_lock(&journal->j_list_lock); 1550 spin_lock(&journal->j_list_lock);
1551 __journal_unfile_buffer(jh); 1551 __jbd2_journal_unfile_buffer(jh);
1552 spin_unlock(&journal->j_list_lock); 1552 spin_unlock(&journal->j_list_lock);
1553 jbd_unlock_bh_state(jh2bh(jh)); 1553 jbd_unlock_bh_state(jh2bh(jh));
1554} 1554}
1555 1555
1556/* 1556/*
1557 * Called from journal_try_to_free_buffers(). 1557 * Called from jbd2_journal_try_to_free_buffers().
1558 * 1558 *
1559 * Called under jbd_lock_bh_state(bh) 1559 * Called under jbd_lock_bh_state(bh)
1560 */ 1560 */
@@ -1576,16 +1576,16 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh)
1576 if (jh->b_jlist == BJ_SyncData || jh->b_jlist == BJ_Locked) { 1576 if (jh->b_jlist == BJ_SyncData || jh->b_jlist == BJ_Locked) {
1577 /* A written-back ordered data buffer */ 1577 /* A written-back ordered data buffer */
1578 JBUFFER_TRACE(jh, "release data"); 1578 JBUFFER_TRACE(jh, "release data");
1579 __journal_unfile_buffer(jh); 1579 __jbd2_journal_unfile_buffer(jh);
1580 journal_remove_journal_head(bh); 1580 jbd2_journal_remove_journal_head(bh);
1581 __brelse(bh); 1581 __brelse(bh);
1582 } 1582 }
1583 } else if (jh->b_cp_transaction != 0 && jh->b_transaction == 0) { 1583 } else if (jh->b_cp_transaction != 0 && jh->b_transaction == 0) {
1584 /* written-back checkpointed metadata buffer */ 1584 /* written-back checkpointed metadata buffer */
1585 if (jh->b_jlist == BJ_None) { 1585 if (jh->b_jlist == BJ_None) {
1586 JBUFFER_TRACE(jh, "remove from checkpoint list"); 1586 JBUFFER_TRACE(jh, "remove from checkpoint list");
1587 __journal_remove_checkpoint(jh); 1587 __jbd2_journal_remove_checkpoint(jh);
1588 journal_remove_journal_head(bh); 1588 jbd2_journal_remove_journal_head(bh);
1589 __brelse(bh); 1589 __brelse(bh);
1590 } 1590 }
1591 } 1591 }
@@ -1596,7 +1596,7 @@ out:
1596 1596
1597 1597
1598/** 1598/**
1599 * int journal_try_to_free_buffers() - try to free page buffers. 1599 * int jbd2_journal_try_to_free_buffers() - try to free page buffers.
1600 * @journal: journal for operation 1600 * @journal: journal for operation
1601 * @page: to try and free 1601 * @page: to try and free
1602 * @unused_gfp_mask: unused 1602 * @unused_gfp_mask: unused
@@ -1613,13 +1613,13 @@ out:
1613 * 1613 *
1614 * This complicates JBD locking somewhat. We aren't protected by the 1614 * This complicates JBD locking somewhat. We aren't protected by the
1615 * BKL here. We wish to remove the buffer from its committing or 1615 * BKL here. We wish to remove the buffer from its committing or
1616 * running transaction's ->t_datalist via __journal_unfile_buffer. 1616 * running transaction's ->t_datalist via __jbd2_journal_unfile_buffer.
1617 * 1617 *
1618 * This may *change* the value of transaction_t->t_datalist, so anyone 1618 * This may *change* the value of transaction_t->t_datalist, so anyone
1619 * who looks at t_datalist needs to lock against this function. 1619 * who looks at t_datalist needs to lock against this function.
1620 * 1620 *
1621 * Even worse, someone may be doing a journal_dirty_data on this 1621 * Even worse, someone may be doing a jbd2_journal_dirty_data on this
1622 * buffer. So we need to lock against that. journal_dirty_data() 1622 * buffer. So we need to lock against that. jbd2_journal_dirty_data()
1623 * will come out of the lock with the buffer dirty, which makes it 1623 * will come out of the lock with the buffer dirty, which makes it
1624 * ineligible for release here. 1624 * ineligible for release here.
1625 * 1625 *
@@ -1629,7 +1629,7 @@ out:
1629 * cannot happen because we never reallocate freed data as metadata 1629 * cannot happen because we never reallocate freed data as metadata
1630 * while the data is part of a transaction. Yes? 1630 * while the data is part of a transaction. Yes?
1631 */ 1631 */
1632int journal_try_to_free_buffers(journal_t *journal, 1632int jbd2_journal_try_to_free_buffers(journal_t *journal,
1633 struct page *page, gfp_t unused_gfp_mask) 1633 struct page *page, gfp_t unused_gfp_mask)
1634{ 1634{
1635 struct buffer_head *head; 1635 struct buffer_head *head;
@@ -1646,15 +1646,15 @@ int journal_try_to_free_buffers(journal_t *journal,
1646 /* 1646 /*
1647 * We take our own ref against the journal_head here to avoid 1647 * We take our own ref against the journal_head here to avoid
1648 * having to add tons of locking around each instance of 1648 * having to add tons of locking around each instance of
1649 * journal_remove_journal_head() and journal_put_journal_head(). 1649 * jbd2_journal_remove_journal_head() and jbd2_journal_put_journal_head().
1650 */ 1650 */
1651 jh = journal_grab_journal_head(bh); 1651 jh = jbd2_journal_grab_journal_head(bh);
1652 if (!jh) 1652 if (!jh)
1653 continue; 1653 continue;
1654 1654
1655 jbd_lock_bh_state(bh); 1655 jbd_lock_bh_state(bh);
1656 __journal_try_to_free_buffer(journal, bh); 1656 __journal_try_to_free_buffer(journal, bh);
1657 journal_put_journal_head(jh); 1657 jbd2_journal_put_journal_head(jh);
1658 jbd_unlock_bh_state(bh); 1658 jbd_unlock_bh_state(bh);
1659 if (buffer_jbd(bh)) 1659 if (buffer_jbd(bh))
1660 goto busy; 1660 goto busy;
@@ -1681,23 +1681,23 @@ static int __dispose_buffer(struct journal_head *jh, transaction_t *transaction)
1681 int may_free = 1; 1681 int may_free = 1;
1682 struct buffer_head *bh = jh2bh(jh); 1682 struct buffer_head *bh = jh2bh(jh);
1683 1683
1684 __journal_unfile_buffer(jh); 1684 __jbd2_journal_unfile_buffer(jh);
1685 1685
1686 if (jh->b_cp_transaction) { 1686 if (jh->b_cp_transaction) {
1687 JBUFFER_TRACE(jh, "on running+cp transaction"); 1687 JBUFFER_TRACE(jh, "on running+cp transaction");
1688 __journal_file_buffer(jh, transaction, BJ_Forget); 1688 __jbd2_journal_file_buffer(jh, transaction, BJ_Forget);
1689 clear_buffer_jbddirty(bh); 1689 clear_buffer_jbddirty(bh);
1690 may_free = 0; 1690 may_free = 0;
1691 } else { 1691 } else {
1692 JBUFFER_TRACE(jh, "on running transaction"); 1692 JBUFFER_TRACE(jh, "on running transaction");
1693 journal_remove_journal_head(bh); 1693 jbd2_journal_remove_journal_head(bh);
1694 __brelse(bh); 1694 __brelse(bh);
1695 } 1695 }
1696 return may_free; 1696 return may_free;
1697} 1697}
1698 1698
1699/* 1699/*
1700 * journal_invalidatepage 1700 * jbd2_journal_invalidatepage
1701 * 1701 *
1702 * This code is tricky. It has a number of cases to deal with. 1702 * This code is tricky. It has a number of cases to deal with.
1703 * 1703 *
@@ -1765,7 +1765,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
1765 jbd_lock_bh_state(bh); 1765 jbd_lock_bh_state(bh);
1766 spin_lock(&journal->j_list_lock); 1766 spin_lock(&journal->j_list_lock);
1767 1767
1768 jh = journal_grab_journal_head(bh); 1768 jh = jbd2_journal_grab_journal_head(bh);
1769 if (!jh) 1769 if (!jh)
1770 goto zap_buffer_no_jh; 1770 goto zap_buffer_no_jh;
1771 1771
@@ -1796,7 +1796,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
1796 JBUFFER_TRACE(jh, "checkpointed: add to BJ_Forget"); 1796 JBUFFER_TRACE(jh, "checkpointed: add to BJ_Forget");
1797 ret = __dispose_buffer(jh, 1797 ret = __dispose_buffer(jh,
1798 journal->j_running_transaction); 1798 journal->j_running_transaction);
1799 journal_put_journal_head(jh); 1799 jbd2_journal_put_journal_head(jh);
1800 spin_unlock(&journal->j_list_lock); 1800 spin_unlock(&journal->j_list_lock);
1801 jbd_unlock_bh_state(bh); 1801 jbd_unlock_bh_state(bh);
1802 spin_unlock(&journal->j_state_lock); 1802 spin_unlock(&journal->j_state_lock);
@@ -1810,7 +1810,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
1810 JBUFFER_TRACE(jh, "give to committing trans"); 1810 JBUFFER_TRACE(jh, "give to committing trans");
1811 ret = __dispose_buffer(jh, 1811 ret = __dispose_buffer(jh,
1812 journal->j_committing_transaction); 1812 journal->j_committing_transaction);
1813 journal_put_journal_head(jh); 1813 jbd2_journal_put_journal_head(jh);
1814 spin_unlock(&journal->j_list_lock); 1814 spin_unlock(&journal->j_list_lock);
1815 jbd_unlock_bh_state(bh); 1815 jbd_unlock_bh_state(bh);
1816 spin_unlock(&journal->j_state_lock); 1816 spin_unlock(&journal->j_state_lock);
@@ -1844,7 +1844,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
1844 journal->j_running_transaction); 1844 journal->j_running_transaction);
1845 jh->b_next_transaction = NULL; 1845 jh->b_next_transaction = NULL;
1846 } 1846 }
1847 journal_put_journal_head(jh); 1847 jbd2_journal_put_journal_head(jh);
1848 spin_unlock(&journal->j_list_lock); 1848 spin_unlock(&journal->j_list_lock);
1849 jbd_unlock_bh_state(bh); 1849 jbd_unlock_bh_state(bh);
1850 spin_unlock(&journal->j_state_lock); 1850 spin_unlock(&journal->j_state_lock);
@@ -1861,7 +1861,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
1861 } 1861 }
1862 1862
1863zap_buffer: 1863zap_buffer:
1864 journal_put_journal_head(jh); 1864 jbd2_journal_put_journal_head(jh);
1865zap_buffer_no_jh: 1865zap_buffer_no_jh:
1866 spin_unlock(&journal->j_list_lock); 1866 spin_unlock(&journal->j_list_lock);
1867 jbd_unlock_bh_state(bh); 1867 jbd_unlock_bh_state(bh);
@@ -1877,7 +1877,7 @@ zap_buffer_unlocked:
1877} 1877}
1878 1878
1879/** 1879/**
1880 * void journal_invalidatepage() 1880 * void jbd2_journal_invalidatepage()
1881 * @journal: journal to use for flush... 1881 * @journal: journal to use for flush...
1882 * @page: page to flush 1882 * @page: page to flush
1883 * @offset: length of page to invalidate. 1883 * @offset: length of page to invalidate.
@@ -1885,7 +1885,7 @@ zap_buffer_unlocked:
1885 * Reap page buffers containing data after offset in page. 1885 * Reap page buffers containing data after offset in page.
1886 * 1886 *
1887 */ 1887 */
1888void journal_invalidatepage(journal_t *journal, 1888void jbd2_journal_invalidatepage(journal_t *journal,
1889 struct page *page, 1889 struct page *page,
1890 unsigned long offset) 1890 unsigned long offset)
1891{ 1891{
@@ -1927,7 +1927,7 @@ void journal_invalidatepage(journal_t *journal,
1927/* 1927/*
1928 * File a buffer on the given transaction list. 1928 * File a buffer on the given transaction list.
1929 */ 1929 */
1930void __journal_file_buffer(struct journal_head *jh, 1930void __jbd2_journal_file_buffer(struct journal_head *jh,
1931 transaction_t *transaction, int jlist) 1931 transaction_t *transaction, int jlist)
1932{ 1932{
1933 struct journal_head **list = NULL; 1933 struct journal_head **list = NULL;
@@ -1956,7 +1956,7 @@ void __journal_file_buffer(struct journal_head *jh,
1956 } 1956 }
1957 1957
1958 if (jh->b_transaction) 1958 if (jh->b_transaction)
1959 __journal_temp_unlink_buffer(jh); 1959 __jbd2_journal_temp_unlink_buffer(jh);
1960 jh->b_transaction = transaction; 1960 jh->b_transaction = transaction;
1961 1961
1962 switch (jlist) { 1962 switch (jlist) {
@@ -1998,12 +1998,12 @@ void __journal_file_buffer(struct journal_head *jh,
1998 set_buffer_jbddirty(bh); 1998 set_buffer_jbddirty(bh);
1999} 1999}
2000 2000
2001void journal_file_buffer(struct journal_head *jh, 2001void jbd2_journal_file_buffer(struct journal_head *jh,
2002 transaction_t *transaction, int jlist) 2002 transaction_t *transaction, int jlist)
2003{ 2003{
2004 jbd_lock_bh_state(jh2bh(jh)); 2004 jbd_lock_bh_state(jh2bh(jh));
2005 spin_lock(&transaction->t_journal->j_list_lock); 2005 spin_lock(&transaction->t_journal->j_list_lock);
2006 __journal_file_buffer(jh, transaction, jlist); 2006 __jbd2_journal_file_buffer(jh, transaction, jlist);
2007 spin_unlock(&transaction->t_journal->j_list_lock); 2007 spin_unlock(&transaction->t_journal->j_list_lock);
2008 jbd_unlock_bh_state(jh2bh(jh)); 2008 jbd_unlock_bh_state(jh2bh(jh));
2009} 2009}
@@ -2018,7 +2018,7 @@ void journal_file_buffer(struct journal_head *jh,
2018 * 2018 *
2019 * Called under jbd_lock_bh_state(jh2bh(jh)) 2019 * Called under jbd_lock_bh_state(jh2bh(jh))
2020 */ 2020 */
2021void __journal_refile_buffer(struct journal_head *jh) 2021void __jbd2_journal_refile_buffer(struct journal_head *jh)
2022{ 2022{
2023 int was_dirty; 2023 int was_dirty;
2024 struct buffer_head *bh = jh2bh(jh); 2024 struct buffer_head *bh = jh2bh(jh);
@@ -2029,7 +2029,7 @@ void __journal_refile_buffer(struct journal_head *jh)
2029 2029
2030 /* If the buffer is now unused, just drop it. */ 2030 /* If the buffer is now unused, just drop it. */
2031 if (jh->b_next_transaction == NULL) { 2031 if (jh->b_next_transaction == NULL) {
2032 __journal_unfile_buffer(jh); 2032 __jbd2_journal_unfile_buffer(jh);
2033 return; 2033 return;
2034 } 2034 }
2035 2035
@@ -2039,10 +2039,10 @@ void __journal_refile_buffer(struct journal_head *jh)
2039 */ 2039 */
2040 2040
2041 was_dirty = test_clear_buffer_jbddirty(bh); 2041 was_dirty = test_clear_buffer_jbddirty(bh);
2042 __journal_temp_unlink_buffer(jh); 2042 __jbd2_journal_temp_unlink_buffer(jh);
2043 jh->b_transaction = jh->b_next_transaction; 2043 jh->b_transaction = jh->b_next_transaction;
2044 jh->b_next_transaction = NULL; 2044 jh->b_next_transaction = NULL;
2045 __journal_file_buffer(jh, jh->b_transaction, 2045 __jbd2_journal_file_buffer(jh, jh->b_transaction,
2046 was_dirty ? BJ_Metadata : BJ_Reserved); 2046 was_dirty ? BJ_Metadata : BJ_Reserved);
2047 J_ASSERT_JH(jh, jh->b_transaction->t_state == T_RUNNING); 2047 J_ASSERT_JH(jh, jh->b_transaction->t_state == T_RUNNING);
2048 2048
@@ -2054,26 +2054,26 @@ void __journal_refile_buffer(struct journal_head *jh)
2054 * For the unlocked version of this call, also make sure that any 2054 * For the unlocked version of this call, also make sure that any
2055 * hanging journal_head is cleaned up if necessary. 2055 * hanging journal_head is cleaned up if necessary.
2056 * 2056 *
2057 * __journal_refile_buffer is usually called as part of a single locked 2057 * __jbd2_journal_refile_buffer is usually called as part of a single locked
2058 * operation on a buffer_head, in which the caller is probably going to 2058 * operation on a buffer_head, in which the caller is probably going to
2059 * be hooking the journal_head onto other lists. In that case it is up 2059 * be hooking the journal_head onto other lists. In that case it is up
2060 * to the caller to remove the journal_head if necessary. For the 2060 * to the caller to remove the journal_head if necessary. For the
2061 * unlocked journal_refile_buffer call, the caller isn't going to be 2061 * unlocked jbd2_journal_refile_buffer call, the caller isn't going to be
2062 * doing anything else to the buffer so we need to do the cleanup 2062 * doing anything else to the buffer so we need to do the cleanup
2063 * ourselves to avoid a jh leak. 2063 * ourselves to avoid a jh leak.
2064 * 2064 *
2065 * *** The journal_head may be freed by this call! *** 2065 * *** The journal_head may be freed by this call! ***
2066 */ 2066 */
2067void journal_refile_buffer(journal_t *journal, struct journal_head *jh) 2067void jbd2_journal_refile_buffer(journal_t *journal, struct journal_head *jh)
2068{ 2068{
2069 struct buffer_head *bh = jh2bh(jh); 2069 struct buffer_head *bh = jh2bh(jh);
2070 2070
2071 jbd_lock_bh_state(bh); 2071 jbd_lock_bh_state(bh);
2072 spin_lock(&journal->j_list_lock); 2072 spin_lock(&journal->j_list_lock);
2073 2073
2074 __journal_refile_buffer(jh); 2074 __jbd2_journal_refile_buffer(jh);
2075 jbd_unlock_bh_state(bh); 2075 jbd_unlock_bh_state(bh);
2076 journal_remove_journal_head(bh); 2076 jbd2_journal_remove_journal_head(bh);
2077 2077
2078 spin_unlock(&journal->j_list_lock); 2078 spin_unlock(&journal->j_list_lock);
2079 __brelse(bh); 2079 __brelse(bh);
diff --git a/include/linux/ext4_jbd2.h b/include/linux/ext4_jbd2.h
index 3dbf6c779037..99d37557cbb4 100644
--- a/include/linux/ext4_jbd2.h
+++ b/include/linux/ext4_jbd2.h
@@ -1,5 +1,5 @@
1/* 1/*
2 * linux/include/linux/ext4_jbd.h 2 * linux/include/linux/ext4_jbd2.h
3 * 3 *
4 * Written by Stephen C. Tweedie <sct@redhat.com>, 1999 4 * Written by Stephen C. Tweedie <sct@redhat.com>, 1999
5 * 5 *
@@ -16,7 +16,7 @@
16#define _LINUX_EXT4_JBD_H 16#define _LINUX_EXT4_JBD_H
17 17
18#include <linux/fs.h> 18#include <linux/fs.h>
19#include <linux/jbd.h> 19#include <linux/jbd2.h>
20#include <linux/ext4_fs.h> 20#include <linux/ext4_fs.h>
21 21
22#define EXT4_JOURNAL(inode) (EXT4_SB((inode)->i_sb)->s_journal) 22#define EXT4_JOURNAL(inode) (EXT4_SB((inode)->i_sb)->s_journal)
@@ -116,7 +116,7 @@ static inline int
116__ext4_journal_get_undo_access(const char *where, handle_t *handle, 116__ext4_journal_get_undo_access(const char *where, handle_t *handle,
117 struct buffer_head *bh) 117 struct buffer_head *bh)
118{ 118{
119 int err = journal_get_undo_access(handle, bh); 119 int err = jbd2_journal_get_undo_access(handle, bh);
120 if (err) 120 if (err)
121 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err); 121 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err);
122 return err; 122 return err;
@@ -126,7 +126,7 @@ static inline int
126__ext4_journal_get_write_access(const char *where, handle_t *handle, 126__ext4_journal_get_write_access(const char *where, handle_t *handle,
127 struct buffer_head *bh) 127 struct buffer_head *bh)
128{ 128{
129 int err = journal_get_write_access(handle, bh); 129 int err = jbd2_journal_get_write_access(handle, bh);
130 if (err) 130 if (err)
131 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err); 131 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err);
132 return err; 132 return err;
@@ -135,13 +135,13 @@ __ext4_journal_get_write_access(const char *where, handle_t *handle,
135static inline void 135static inline void
136ext4_journal_release_buffer(handle_t *handle, struct buffer_head *bh) 136ext4_journal_release_buffer(handle_t *handle, struct buffer_head *bh)
137{ 137{
138 journal_release_buffer(handle, bh); 138 jbd2_journal_release_buffer(handle, bh);
139} 139}
140 140
141static inline int 141static inline int
142__ext4_journal_forget(const char *where, handle_t *handle, struct buffer_head *bh) 142__ext4_journal_forget(const char *where, handle_t *handle, struct buffer_head *bh)
143{ 143{
144 int err = journal_forget(handle, bh); 144 int err = jbd2_journal_forget(handle, bh);
145 if (err) 145 if (err)
146 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err); 146 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err);
147 return err; 147 return err;
@@ -151,7 +151,7 @@ static inline int
151__ext4_journal_revoke(const char *where, handle_t *handle, 151__ext4_journal_revoke(const char *where, handle_t *handle,
152 unsigned long blocknr, struct buffer_head *bh) 152 unsigned long blocknr, struct buffer_head *bh)
153{ 153{
154 int err = journal_revoke(handle, blocknr, bh); 154 int err = jbd2_journal_revoke(handle, blocknr, bh);
155 if (err) 155 if (err)
156 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err); 156 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err);
157 return err; 157 return err;
@@ -161,7 +161,7 @@ static inline int
161__ext4_journal_get_create_access(const char *where, 161__ext4_journal_get_create_access(const char *where,
162 handle_t *handle, struct buffer_head *bh) 162 handle_t *handle, struct buffer_head *bh)
163{ 163{
164 int err = journal_get_create_access(handle, bh); 164 int err = jbd2_journal_get_create_access(handle, bh);
165 if (err) 165 if (err)
166 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err); 166 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err);
167 return err; 167 return err;
@@ -171,7 +171,7 @@ static inline int
171__ext4_journal_dirty_metadata(const char *where, 171__ext4_journal_dirty_metadata(const char *where,
172 handle_t *handle, struct buffer_head *bh) 172 handle_t *handle, struct buffer_head *bh)
173{ 173{
174 int err = journal_dirty_metadata(handle, bh); 174 int err = jbd2_journal_dirty_metadata(handle, bh);
175 if (err) 175 if (err)
176 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err); 176 ext4_journal_abort_handle(where, __FUNCTION__, bh, handle,err);
177 return err; 177 return err;
@@ -211,22 +211,22 @@ static inline handle_t *ext4_journal_current_handle(void)
211 211
212static inline int ext4_journal_extend(handle_t *handle, int nblocks) 212static inline int ext4_journal_extend(handle_t *handle, int nblocks)
213{ 213{
214 return journal_extend(handle, nblocks); 214 return jbd2_journal_extend(handle, nblocks);
215} 215}
216 216
217static inline int ext4_journal_restart(handle_t *handle, int nblocks) 217static inline int ext4_journal_restart(handle_t *handle, int nblocks)
218{ 218{
219 return journal_restart(handle, nblocks); 219 return jbd2_journal_restart(handle, nblocks);
220} 220}
221 221
222static inline int ext4_journal_blocks_per_page(struct inode *inode) 222static inline int ext4_journal_blocks_per_page(struct inode *inode)
223{ 223{
224 return journal_blocks_per_page(inode); 224 return jbd2_journal_blocks_per_page(inode);
225} 225}
226 226
227static inline int ext4_journal_force_commit(journal_t *journal) 227static inline int ext4_journal_force_commit(journal_t *journal)
228{ 228{
229 return journal_force_commit(journal); 229 return jbd2_journal_force_commit(journal);
230} 230}
231 231
232/* super.c */ 232/* super.c */
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index fe89444b1c6f..3251f7abb57d 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -1,5 +1,5 @@
1/* 1/*
2 * linux/include/linux/jbd.h 2 * linux/include/linux/jbd2.h
3 * 3 *
4 * Written by Stephen C. Tweedie <sct@redhat.com> 4 * Written by Stephen C. Tweedie <sct@redhat.com>
5 * 5 *
@@ -19,7 +19,7 @@
19/* Allow this file to be included directly into e2fsprogs */ 19/* Allow this file to be included directly into e2fsprogs */
20#ifndef __KERNEL__ 20#ifndef __KERNEL__
21#include "jfs_compat.h" 21#include "jfs_compat.h"
22#define JFS_DEBUG 22#define JBD2_DEBUG
23#define jfs_debug jbd_debug 23#define jfs_debug jbd_debug
24#else 24#else
25 25
@@ -57,11 +57,11 @@
57 * CONFIG_JBD_DEBUG is on. 57 * CONFIG_JBD_DEBUG is on.
58 */ 58 */
59#define JBD_EXPENSIVE_CHECKING 59#define JBD_EXPENSIVE_CHECKING
60extern int journal_enable_debug; 60extern int jbd2_journal_enable_debug;
61 61
62#define jbd_debug(n, f, a...) \ 62#define jbd_debug(n, f, a...) \
63 do { \ 63 do { \
64 if ((n) <= journal_enable_debug) { \ 64 if ((n) <= jbd2_journal_enable_debug) { \
65 printk (KERN_DEBUG "(%s, %d): %s: ", \ 65 printk (KERN_DEBUG "(%s, %d): %s: ", \
66 __FILE__, __LINE__, __FUNCTION__); \ 66 __FILE__, __LINE__, __FUNCTION__); \
67 printk (f, ## a); \ 67 printk (f, ## a); \
@@ -71,16 +71,16 @@ extern int journal_enable_debug;
71#define jbd_debug(f, a...) /**/ 71#define jbd_debug(f, a...) /**/
72#endif 72#endif
73 73
74extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry); 74extern void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
75extern void * jbd_slab_alloc(size_t size, gfp_t flags); 75extern void * jbd2_slab_alloc(size_t size, gfp_t flags);
76extern void jbd_slab_free(void *ptr, size_t size); 76extern void jbd2_slab_free(void *ptr, size_t size);
77 77
78#define jbd_kmalloc(size, flags) \ 78#define jbd_kmalloc(size, flags) \
79 __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry) 79 __jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
80#define jbd_rep_kmalloc(size, flags) \ 80#define jbd_rep_kmalloc(size, flags) \
81 __jbd_kmalloc(__FUNCTION__, (size), (flags), 1) 81 __jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
82 82
83#define JFS_MIN_JOURNAL_BLOCKS 1024 83#define JBD2_MIN_JOURNAL_BLOCKS 1024
84 84
85#ifdef __KERNEL__ 85#ifdef __KERNEL__
86 86
@@ -122,7 +122,7 @@ typedef struct journal_s journal_t; /* Journal control structure */
122 * Internal structures used by the logging mechanism: 122 * Internal structures used by the logging mechanism:
123 */ 123 */
124 124
125#define JFS_MAGIC_NUMBER 0xc03b3998U /* The first 4 bytes of /dev/random! */ 125#define JBD2_MAGIC_NUMBER 0xc03b3998U /* The first 4 bytes of /dev/random! */
126 126
127/* 127/*
128 * On-disk structures 128 * On-disk structures
@@ -132,11 +132,11 @@ typedef struct journal_s journal_t; /* Journal control structure */
132 * Descriptor block types: 132 * Descriptor block types:
133 */ 133 */
134 134
135#define JFS_DESCRIPTOR_BLOCK 1 135#define JBD2_DESCRIPTOR_BLOCK 1
136#define JFS_COMMIT_BLOCK 2 136#define JBD2_COMMIT_BLOCK 2
137#define JFS_SUPERBLOCK_V1 3 137#define JBD2_SUPERBLOCK_V1 3
138#define JFS_SUPERBLOCK_V2 4 138#define JBD2_SUPERBLOCK_V2 4
139#define JFS_REVOKE_BLOCK 5 139#define JBD2_REVOKE_BLOCK 5
140 140
141/* 141/*
142 * Standard header for all descriptor blocks: 142 * Standard header for all descriptor blocks:
@@ -162,18 +162,18 @@ typedef struct journal_block_tag_s
162 * The revoke descriptor: used on disk to describe a series of blocks to 162 * The revoke descriptor: used on disk to describe a series of blocks to
163 * be revoked from the log 163 * be revoked from the log
164 */ 164 */
165typedef struct journal_revoke_header_s 165typedef struct jbd2_journal_revoke_header_s
166{ 166{
167 journal_header_t r_header; 167 journal_header_t r_header;
168 __be32 r_count; /* Count of bytes used in the block */ 168 __be32 r_count; /* Count of bytes used in the block */
169} journal_revoke_header_t; 169} jbd2_journal_revoke_header_t;
170 170
171 171
172/* Definitions for the journal tag flags word: */ 172/* Definitions for the journal tag flags word: */
173#define JFS_FLAG_ESCAPE 1 /* on-disk block is escaped */ 173#define JBD2_FLAG_ESCAPE 1 /* on-disk block is escaped */
174#define JFS_FLAG_SAME_UUID 2 /* block has same uuid as previous */ 174#define JBD2_FLAG_SAME_UUID 2 /* block has same uuid as previous */
175#define JFS_FLAG_DELETED 4 /* block deleted by this transaction */ 175#define JBD2_FLAG_DELETED 4 /* block deleted by this transaction */
176#define JFS_FLAG_LAST_TAG 8 /* last tag in this descriptor block */ 176#define JBD2_FLAG_LAST_TAG 8 /* last tag in this descriptor block */
177 177
178 178
179/* 179/*
@@ -196,7 +196,7 @@ typedef struct journal_superblock_s
196 __be32 s_start; /* blocknr of start of log */ 196 __be32 s_start; /* blocknr of start of log */
197 197
198/* 0x0020 */ 198/* 0x0020 */
199 /* Error value, as set by journal_abort(). */ 199 /* Error value, as set by jbd2_journal_abort(). */
200 __be32 s_errno; 200 __be32 s_errno;
201 201
202/* 0x0024 */ 202/* 0x0024 */
@@ -224,22 +224,22 @@ typedef struct journal_superblock_s
224/* 0x0400 */ 224/* 0x0400 */
225} journal_superblock_t; 225} journal_superblock_t;
226 226
227#define JFS_HAS_COMPAT_FEATURE(j,mask) \ 227#define JBD2_HAS_COMPAT_FEATURE(j,mask) \
228 ((j)->j_format_version >= 2 && \ 228 ((j)->j_format_version >= 2 && \
229 ((j)->j_superblock->s_feature_compat & cpu_to_be32((mask)))) 229 ((j)->j_superblock->s_feature_compat & cpu_to_be32((mask))))
230#define JFS_HAS_RO_COMPAT_FEATURE(j,mask) \ 230#define JBD2_HAS_RO_COMPAT_FEATURE(j,mask) \
231 ((j)->j_format_version >= 2 && \ 231 ((j)->j_format_version >= 2 && \
232 ((j)->j_superblock->s_feature_ro_compat & cpu_to_be32((mask)))) 232 ((j)->j_superblock->s_feature_ro_compat & cpu_to_be32((mask))))
233#define JFS_HAS_INCOMPAT_FEATURE(j,mask) \ 233#define JBD2_HAS_INCOMPAT_FEATURE(j,mask) \
234 ((j)->j_format_version >= 2 && \ 234 ((j)->j_format_version >= 2 && \
235 ((j)->j_superblock->s_feature_incompat & cpu_to_be32((mask)))) 235 ((j)->j_superblock->s_feature_incompat & cpu_to_be32((mask))))
236 236
237#define JFS_FEATURE_INCOMPAT_REVOKE 0x00000001 237#define JBD2_FEATURE_INCOMPAT_REVOKE 0x00000001
238 238
239/* Features known to this kernel version: */ 239/* Features known to this kernel version: */
240#define JFS_KNOWN_COMPAT_FEATURES 0 240#define JBD2_KNOWN_COMPAT_FEATURES 0
241#define JFS_KNOWN_ROCOMPAT_FEATURES 0 241#define JBD2_KNOWN_ROCOMPAT_FEATURES 0
242#define JFS_KNOWN_INCOMPAT_FEATURES JFS_FEATURE_INCOMPAT_REVOKE 242#define JBD2_KNOWN_INCOMPAT_FEATURES JBD2_FEATURE_INCOMPAT_REVOKE
243 243
244#ifdef __KERNEL__ 244#ifdef __KERNEL__
245 245
@@ -359,7 +359,7 @@ static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh)
359 bit_spin_unlock(BH_JournalHead, &bh->b_state); 359 bit_spin_unlock(BH_JournalHead, &bh->b_state);
360} 360}
361 361
362struct jbd_revoke_table_s; 362struct jbd2_revoke_table_s;
363 363
364/** 364/**
365 * struct handle_s - The handle_s type is the concrete type associated with 365 * struct handle_s - The handle_s type is the concrete type associated with
@@ -445,7 +445,7 @@ struct transaction_s
445 445
446 /* 446 /*
447 * Transaction's current state 447 * Transaction's current state
448 * [no locking - only kjournald alters this] 448 * [no locking - only kjournald2 alters this]
449 * FIXME: needs barriers 449 * FIXME: needs barriers
450 * KLUDGE: [use j_state_lock] 450 * KLUDGE: [use j_state_lock]
451 */ 451 */
@@ -621,7 +621,7 @@ struct transaction_s
621 * @j_revoke: The revoke table - maintains the list of revoked blocks in the 621 * @j_revoke: The revoke table - maintains the list of revoked blocks in the
622 * current transaction. 622 * current transaction.
623 * @j_revoke_table: alternate revoke tables for j_revoke 623 * @j_revoke_table: alternate revoke tables for j_revoke
624 * @j_wbuf: array of buffer_heads for journal_commit_transaction 624 * @j_wbuf: array of buffer_heads for jbd2_journal_commit_transaction
625 * @j_wbufsize: maximum number of buffer_heads allowed in j_wbuf, the 625 * @j_wbufsize: maximum number of buffer_heads allowed in j_wbuf, the
626 * number that will fit in j_blocksize 626 * number that will fit in j_blocksize
627 * @j_last_sync_writer: most recent pid which did a synchronous write 627 * @j_last_sync_writer: most recent pid which did a synchronous write
@@ -805,11 +805,11 @@ struct journal_s
805 * current transaction. [j_revoke_lock] 805 * current transaction. [j_revoke_lock]
806 */ 806 */
807 spinlock_t j_revoke_lock; 807 spinlock_t j_revoke_lock;
808 struct jbd_revoke_table_s *j_revoke; 808 struct jbd2_revoke_table_s *j_revoke;
809 struct jbd_revoke_table_s *j_revoke_table[2]; 809 struct jbd2_revoke_table_s *j_revoke_table[2];
810 810
811 /* 811 /*
812 * array of bhs for journal_commit_transaction 812 * array of bhs for jbd2_journal_commit_transaction
813 */ 813 */
814 struct buffer_head **j_wbuf; 814 struct buffer_head **j_wbuf;
815 int j_wbufsize; 815 int j_wbufsize;
@@ -826,12 +826,12 @@ struct journal_s
826/* 826/*
827 * Journal flag definitions 827 * Journal flag definitions
828 */ 828 */
829#define JFS_UNMOUNT 0x001 /* Journal thread is being destroyed */ 829#define JBD2_UNMOUNT 0x001 /* Journal thread is being destroyed */
830#define JFS_ABORT 0x002 /* Journaling has been aborted for errors. */ 830#define JBD2_ABORT 0x002 /* Journaling has been aborted for errors. */
831#define JFS_ACK_ERR 0x004 /* The errno in the sb has been acked */ 831#define JBD2_ACK_ERR 0x004 /* The errno in the sb has been acked */
832#define JFS_FLUSHED 0x008 /* The journal superblock has been flushed */ 832#define JBD2_FLUSHED 0x008 /* The journal superblock has been flushed */
833#define JFS_LOADED 0x010 /* The journal superblock has been loaded */ 833#define JBD2_LOADED 0x010 /* The journal superblock has been loaded */
834#define JFS_BARRIER 0x020 /* Use IDE barriers */ 834#define JBD2_BARRIER 0x020 /* Use IDE barriers */
835 835
836/* 836/*
837 * Function declarations for the journaling transaction and buffer 837 * Function declarations for the journaling transaction and buffer
@@ -839,31 +839,31 @@ struct journal_s
839 */ 839 */
840 840
841/* Filing buffers */ 841/* Filing buffers */
842extern void __journal_temp_unlink_buffer(struct journal_head *jh); 842extern void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh);
843extern void journal_unfile_buffer(journal_t *, struct journal_head *); 843extern void jbd2_journal_unfile_buffer(journal_t *, struct journal_head *);
844extern void __journal_unfile_buffer(struct journal_head *); 844extern void __jbd2_journal_unfile_buffer(struct journal_head *);
845extern void __journal_refile_buffer(struct journal_head *); 845extern void __jbd2_journal_refile_buffer(struct journal_head *);
846extern void journal_refile_buffer(journal_t *, struct journal_head *); 846extern void jbd2_journal_refile_buffer(journal_t *, struct journal_head *);
847extern void __journal_file_buffer(struct journal_head *, transaction_t *, int); 847extern void __jbd2_journal_file_buffer(struct journal_head *, transaction_t *, int);
848extern void __journal_free_buffer(struct journal_head *bh); 848extern void __journal_free_buffer(struct journal_head *bh);
849extern void journal_file_buffer(struct journal_head *, transaction_t *, int); 849extern void jbd2_journal_file_buffer(struct journal_head *, transaction_t *, int);
850extern void __journal_clean_data_list(transaction_t *transaction); 850extern void __journal_clean_data_list(transaction_t *transaction);
851 851
852/* Log buffer allocation */ 852/* Log buffer allocation */
853extern struct journal_head * journal_get_descriptor_buffer(journal_t *); 853extern struct journal_head * jbd2_journal_get_descriptor_buffer(journal_t *);
854int journal_next_log_block(journal_t *, unsigned long *); 854int jbd2_journal_next_log_block(journal_t *, unsigned long *);
855 855
856/* Commit management */ 856/* Commit management */
857extern void journal_commit_transaction(journal_t *); 857extern void jbd2_journal_commit_transaction(journal_t *);
858 858
859/* Checkpoint list management */ 859/* Checkpoint list management */
860int __journal_clean_checkpoint_list(journal_t *journal); 860int __jbd2_journal_clean_checkpoint_list(journal_t *journal);
861int __journal_remove_checkpoint(struct journal_head *); 861int __jbd2_journal_remove_checkpoint(struct journal_head *);
862void __journal_insert_checkpoint(struct journal_head *, transaction_t *); 862void __jbd2_journal_insert_checkpoint(struct journal_head *, transaction_t *);
863 863
864/* Buffer IO */ 864/* Buffer IO */
865extern int 865extern int
866journal_write_metadata_buffer(transaction_t *transaction, 866jbd2_journal_write_metadata_buffer(transaction_t *transaction,
867 struct journal_head *jh_in, 867 struct journal_head *jh_in,
868 struct journal_head **jh_out, 868 struct journal_head **jh_out,
869 unsigned long blocknr); 869 unsigned long blocknr);
@@ -893,91 +893,91 @@ static inline handle_t *journal_current_handle(void)
893 * Register buffer modifications against the current transaction. 893 * Register buffer modifications against the current transaction.
894 */ 894 */
895 895
896extern handle_t *journal_start(journal_t *, int nblocks); 896extern handle_t *jbd2_journal_start(journal_t *, int nblocks);
897extern int journal_restart (handle_t *, int nblocks); 897extern int jbd2_journal_restart (handle_t *, int nblocks);
898extern int journal_extend (handle_t *, int nblocks); 898extern int jbd2_journal_extend (handle_t *, int nblocks);
899extern int journal_get_write_access(handle_t *, struct buffer_head *); 899extern int jbd2_journal_get_write_access(handle_t *, struct buffer_head *);
900extern int journal_get_create_access (handle_t *, struct buffer_head *); 900extern int jbd2_journal_get_create_access (handle_t *, struct buffer_head *);
901extern int journal_get_undo_access(handle_t *, struct buffer_head *); 901extern int jbd2_journal_get_undo_access(handle_t *, struct buffer_head *);
902extern int journal_dirty_data (handle_t *, struct buffer_head *); 902extern int jbd2_journal_dirty_data (handle_t *, struct buffer_head *);
903extern int journal_dirty_metadata (handle_t *, struct buffer_head *); 903extern int jbd2_journal_dirty_metadata (handle_t *, struct buffer_head *);
904extern void journal_release_buffer (handle_t *, struct buffer_head *); 904extern void jbd2_journal_release_buffer (handle_t *, struct buffer_head *);
905extern int journal_forget (handle_t *, struct buffer_head *); 905extern int jbd2_journal_forget (handle_t *, struct buffer_head *);
906extern void journal_sync_buffer (struct buffer_head *); 906extern void journal_sync_buffer (struct buffer_head *);
907extern void journal_invalidatepage(journal_t *, 907extern void jbd2_journal_invalidatepage(journal_t *,
908 struct page *, unsigned long); 908 struct page *, unsigned long);
909extern int journal_try_to_free_buffers(journal_t *, struct page *, gfp_t); 909extern int jbd2_journal_try_to_free_buffers(journal_t *, struct page *, gfp_t);
910extern int journal_stop(handle_t *); 910extern int jbd2_journal_stop(handle_t *);
911extern int journal_flush (journal_t *); 911extern int jbd2_journal_flush (journal_t *);
912extern void journal_lock_updates (journal_t *); 912extern void jbd2_journal_lock_updates (journal_t *);
913extern void journal_unlock_updates (journal_t *); 913extern void jbd2_journal_unlock_updates (journal_t *);
914 914
915extern journal_t * journal_init_dev(struct block_device *bdev, 915extern journal_t * jbd2_journal_init_dev(struct block_device *bdev,
916 struct block_device *fs_dev, 916 struct block_device *fs_dev,
917 int start, int len, int bsize); 917 int start, int len, int bsize);
918extern journal_t * journal_init_inode (struct inode *); 918extern journal_t * jbd2_journal_init_inode (struct inode *);
919extern int journal_update_format (journal_t *); 919extern int jbd2_journal_update_format (journal_t *);
920extern int journal_check_used_features 920extern int jbd2_journal_check_used_features
921 (journal_t *, unsigned long, unsigned long, unsigned long); 921 (journal_t *, unsigned long, unsigned long, unsigned long);
922extern int journal_check_available_features 922extern int jbd2_journal_check_available_features
923 (journal_t *, unsigned long, unsigned long, unsigned long); 923 (journal_t *, unsigned long, unsigned long, unsigned long);
924extern int journal_set_features 924extern int jbd2_journal_set_features
925 (journal_t *, unsigned long, unsigned long, unsigned long); 925 (journal_t *, unsigned long, unsigned long, unsigned long);
926extern int journal_create (journal_t *); 926extern int jbd2_journal_create (journal_t *);
927extern int journal_load (journal_t *journal); 927extern int jbd2_journal_load (journal_t *journal);
928extern void journal_destroy (journal_t *); 928extern void jbd2_journal_destroy (journal_t *);
929extern int journal_recover (journal_t *journal); 929extern int jbd2_journal_recover (journal_t *journal);
930extern int journal_wipe (journal_t *, int); 930extern int jbd2_journal_wipe (journal_t *, int);
931extern int journal_skip_recovery (journal_t *); 931extern int jbd2_journal_skip_recovery (journal_t *);
932extern void journal_update_superblock (journal_t *, int); 932extern void jbd2_journal_update_superblock (journal_t *, int);
933extern void __journal_abort_hard (journal_t *); 933extern void __jbd2_journal_abort_hard (journal_t *);
934extern void journal_abort (journal_t *, int); 934extern void jbd2_journal_abort (journal_t *, int);
935extern int journal_errno (journal_t *); 935extern int jbd2_journal_errno (journal_t *);
936extern void journal_ack_err (journal_t *); 936extern void jbd2_journal_ack_err (journal_t *);
937extern int journal_clear_err (journal_t *); 937extern int jbd2_journal_clear_err (journal_t *);
938extern int journal_bmap(journal_t *, unsigned long, unsigned long *); 938extern int jbd2_journal_bmap(journal_t *, unsigned long, unsigned long *);
939extern int journal_force_commit(journal_t *); 939extern int jbd2_journal_force_commit(journal_t *);
940 940
941/* 941/*
942 * journal_head management 942 * journal_head management
943 */ 943 */
944struct journal_head *journal_add_journal_head(struct buffer_head *bh); 944struct journal_head *jbd2_journal_add_journal_head(struct buffer_head *bh);
945struct journal_head *journal_grab_journal_head(struct buffer_head *bh); 945struct journal_head *jbd2_journal_grab_journal_head(struct buffer_head *bh);
946void journal_remove_journal_head(struct buffer_head *bh); 946void jbd2_journal_remove_journal_head(struct buffer_head *bh);
947void journal_put_journal_head(struct journal_head *jh); 947void jbd2_journal_put_journal_head(struct journal_head *jh);
948 948
949/* 949/*
950 * handle management 950 * handle management
951 */ 951 */
952extern kmem_cache_t *jbd_handle_cache; 952extern kmem_cache_t *jbd2_handle_cache;
953 953
954static inline handle_t *jbd_alloc_handle(gfp_t gfp_flags) 954static inline handle_t *jbd_alloc_handle(gfp_t gfp_flags)
955{ 955{
956 return kmem_cache_alloc(jbd_handle_cache, gfp_flags); 956 return kmem_cache_alloc(jbd2_handle_cache, gfp_flags);
957} 957}
958 958
959static inline void jbd_free_handle(handle_t *handle) 959static inline void jbd_free_handle(handle_t *handle)
960{ 960{
961 kmem_cache_free(jbd_handle_cache, handle); 961 kmem_cache_free(jbd2_handle_cache, handle);
962} 962}
963 963
964/* Primary revoke support */ 964/* Primary revoke support */
965#define JOURNAL_REVOKE_DEFAULT_HASH 256 965#define JOURNAL_REVOKE_DEFAULT_HASH 256
966extern int journal_init_revoke(journal_t *, int); 966extern int jbd2_journal_init_revoke(journal_t *, int);
967extern void journal_destroy_revoke_caches(void); 967extern void jbd2_journal_destroy_revoke_caches(void);
968extern int journal_init_revoke_caches(void); 968extern int jbd2_journal_init_revoke_caches(void);
969 969
970extern void journal_destroy_revoke(journal_t *); 970extern void jbd2_journal_destroy_revoke(journal_t *);
971extern int journal_revoke (handle_t *, 971extern int jbd2_journal_revoke (handle_t *,
972 unsigned long, struct buffer_head *); 972 unsigned long, struct buffer_head *);
973extern int journal_cancel_revoke(handle_t *, struct journal_head *); 973extern int jbd2_journal_cancel_revoke(handle_t *, struct journal_head *);
974extern void journal_write_revoke_records(journal_t *, transaction_t *); 974extern void jbd2_journal_write_revoke_records(journal_t *, transaction_t *);
975 975
976/* Recovery revoke support */ 976/* Recovery revoke support */
977extern int journal_set_revoke(journal_t *, unsigned long, tid_t); 977extern int jbd2_journal_set_revoke(journal_t *, unsigned long, tid_t);
978extern int journal_test_revoke(journal_t *, unsigned long, tid_t); 978extern int jbd2_journal_test_revoke(journal_t *, unsigned long, tid_t);
979extern void journal_clear_revoke(journal_t *); 979extern void jbd2_journal_clear_revoke(journal_t *);
980extern void journal_switch_revoke_table(journal_t *journal); 980extern void jbd2_journal_switch_revoke_table(journal_t *journal);
981 981
982/* 982/*
983 * The log thread user interface: 983 * The log thread user interface:
@@ -986,17 +986,17 @@ extern void journal_switch_revoke_table(journal_t *journal);
986 * transitions on demand. 986 * transitions on demand.
987 */ 987 */
988 988
989int __log_space_left(journal_t *); /* Called with journal locked */ 989int __jbd2_log_space_left(journal_t *); /* Called with journal locked */
990int log_start_commit(journal_t *journal, tid_t tid); 990int jbd2_log_start_commit(journal_t *journal, tid_t tid);
991int __log_start_commit(journal_t *journal, tid_t tid); 991int __jbd2_log_start_commit(journal_t *journal, tid_t tid);
992int journal_start_commit(journal_t *journal, tid_t *tid); 992int jbd2_journal_start_commit(journal_t *journal, tid_t *tid);
993int journal_force_commit_nested(journal_t *journal); 993int jbd2_journal_force_commit_nested(journal_t *journal);
994int log_wait_commit(journal_t *journal, tid_t tid); 994int jbd2_log_wait_commit(journal_t *journal, tid_t tid);
995int log_do_checkpoint(journal_t *journal); 995int jbd2_log_do_checkpoint(journal_t *journal);
996 996
997void __log_wait_for_space(journal_t *journal); 997void __jbd2_log_wait_for_space(journal_t *journal);
998extern void __journal_drop_transaction(journal_t *, transaction_t *); 998extern void __jbd2_journal_drop_transaction(journal_t *, transaction_t *);
999extern int cleanup_journal_tail(journal_t *); 999extern int jbd2_cleanup_journal_tail(journal_t *);
1000 1000
1001/* Debugging code only: */ 1001/* Debugging code only: */
1002 1002
@@ -1010,7 +1010,7 @@ do { \
1010/* 1010/*
1011 * is_journal_abort 1011 * is_journal_abort
1012 * 1012 *
1013 * Simple test wrapper function to test the JFS_ABORT state flag. This 1013 * Simple test wrapper function to test the JBD2_ABORT state flag. This
1014 * bit, when set, indicates that we have had a fatal error somewhere, 1014 * bit, when set, indicates that we have had a fatal error somewhere,
1015 * either inside the journaling layer or indicated to us by the client 1015 * either inside the journaling layer or indicated to us by the client
1016 * (eg. ext3), and that we and should not commit any further 1016 * (eg. ext3), and that we and should not commit any further
@@ -1019,7 +1019,7 @@ do { \
1019 1019
1020static inline int is_journal_aborted(journal_t *journal) 1020static inline int is_journal_aborted(journal_t *journal)
1021{ 1021{
1022 return journal->j_flags & JFS_ABORT; 1022 return journal->j_flags & JBD2_ABORT;
1023} 1023}
1024 1024
1025static inline int is_handle_aborted(handle_t *handle) 1025static inline int is_handle_aborted(handle_t *handle)
@@ -1029,7 +1029,7 @@ static inline int is_handle_aborted(handle_t *handle)
1029 return is_journal_aborted(handle->h_transaction->t_journal); 1029 return is_journal_aborted(handle->h_transaction->t_journal);
1030} 1030}
1031 1031
1032static inline void journal_abort_handle(handle_t *handle) 1032static inline void jbd2_journal_abort_handle(handle_t *handle)
1033{ 1033{
1034 handle->h_aborted = 1; 1034 handle->h_aborted = 1;
1035} 1035}
@@ -1051,7 +1051,7 @@ static inline int tid_geq(tid_t x, tid_t y)
1051 return (difference >= 0); 1051 return (difference >= 0);
1052} 1052}
1053 1053
1054extern int journal_blocks_per_page(struct inode *inode); 1054extern int jbd2_journal_blocks_per_page(struct inode *inode);
1055 1055
1056/* 1056/*
1057 * Return the minimum number of blocks which must be free in the journal 1057 * Return the minimum number of blocks which must be free in the journal
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-05 22:23:00 -0500