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authorDavid S. Miller <davem@davemloft.net>2009-08-12 20:44:53 -0400
committerDavid S. Miller <davem@davemloft.net>2009-08-12 20:44:53 -0400
commitaa11d958d1a6572eda08214d7c6a735804fe48a5 (patch)
treed025b05270ad1e010660d17eeadc6ac3c1abbd7d /fs/jbd2/journal.c
parent07f6642ee9418e962e54cbc07471cfe2e559c568 (diff)
parent9799218ae36910af50f002a5db1802d576fffb43 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: arch/microblaze/include/asm/socket.h
Diffstat (limited to 'fs/jbd2/journal.c')
-rw-r--r--fs/jbd2/journal.c31
1 files changed, 17 insertions, 14 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 18bfd5dab642..e378cb383979 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -297,6 +297,7 @@ int jbd2_journal_write_metadata_buffer(transaction_t *transaction,
297 unsigned int new_offset; 297 unsigned int new_offset;
298 struct buffer_head *bh_in = jh2bh(jh_in); 298 struct buffer_head *bh_in = jh2bh(jh_in);
299 struct jbd2_buffer_trigger_type *triggers; 299 struct jbd2_buffer_trigger_type *triggers;
300 journal_t *journal = transaction->t_journal;
300 301
301 /* 302 /*
302 * The buffer really shouldn't be locked: only the current committing 303 * The buffer really shouldn't be locked: only the current committing
@@ -310,6 +311,11 @@ int jbd2_journal_write_metadata_buffer(transaction_t *transaction,
310 J_ASSERT_BH(bh_in, buffer_jbddirty(bh_in)); 311 J_ASSERT_BH(bh_in, buffer_jbddirty(bh_in));
311 312
312 new_bh = alloc_buffer_head(GFP_NOFS|__GFP_NOFAIL); 313 new_bh = alloc_buffer_head(GFP_NOFS|__GFP_NOFAIL);
314 /* keep subsequent assertions sane */
315 new_bh->b_state = 0;
316 init_buffer(new_bh, NULL, NULL);
317 atomic_set(&new_bh->b_count, 1);
318 new_jh = jbd2_journal_add_journal_head(new_bh); /* This sleeps */
313 319
314 /* 320 /*
315 * If a new transaction has already done a buffer copy-out, then 321 * If a new transaction has already done a buffer copy-out, then
@@ -388,14 +394,6 @@ repeat:
388 kunmap_atomic(mapped_data, KM_USER0); 394 kunmap_atomic(mapped_data, KM_USER0);
389 } 395 }
390 396
391 /* keep subsequent assertions sane */
392 new_bh->b_state = 0;
393 init_buffer(new_bh, NULL, NULL);
394 atomic_set(&new_bh->b_count, 1);
395 jbd_unlock_bh_state(bh_in);
396
397 new_jh = jbd2_journal_add_journal_head(new_bh); /* This sleeps */
398
399 set_bh_page(new_bh, new_page, new_offset); 397 set_bh_page(new_bh, new_page, new_offset);
400 new_jh->b_transaction = NULL; 398 new_jh->b_transaction = NULL;
401 new_bh->b_size = jh2bh(jh_in)->b_size; 399 new_bh->b_size = jh2bh(jh_in)->b_size;
@@ -412,7 +410,11 @@ repeat:
412 * copying is moved to the transaction's shadow queue. 410 * copying is moved to the transaction's shadow queue.
413 */ 411 */
414 JBUFFER_TRACE(jh_in, "file as BJ_Shadow"); 412 JBUFFER_TRACE(jh_in, "file as BJ_Shadow");
415 jbd2_journal_file_buffer(jh_in, transaction, BJ_Shadow); 413 spin_lock(&journal->j_list_lock);
414 __jbd2_journal_file_buffer(jh_in, transaction, BJ_Shadow);
415 spin_unlock(&journal->j_list_lock);
416 jbd_unlock_bh_state(bh_in);
417
416 JBUFFER_TRACE(new_jh, "file as BJ_IO"); 418 JBUFFER_TRACE(new_jh, "file as BJ_IO");
417 jbd2_journal_file_buffer(new_jh, transaction, BJ_IO); 419 jbd2_journal_file_buffer(new_jh, transaction, BJ_IO);
418 420
@@ -2410,6 +2412,7 @@ const char *jbd2_dev_to_name(dev_t device)
2410 int i = hash_32(device, CACHE_SIZE_BITS); 2412 int i = hash_32(device, CACHE_SIZE_BITS);
2411 char *ret; 2413 char *ret;
2412 struct block_device *bd; 2414 struct block_device *bd;
2415 static struct devname_cache *new_dev;
2413 2416
2414 rcu_read_lock(); 2417 rcu_read_lock();
2415 if (devcache[i] && devcache[i]->device == device) { 2418 if (devcache[i] && devcache[i]->device == device) {
@@ -2419,20 +2422,20 @@ const char *jbd2_dev_to_name(dev_t device)
2419 } 2422 }
2420 rcu_read_unlock(); 2423 rcu_read_unlock();
2421 2424
2425 new_dev = kmalloc(sizeof(struct devname_cache), GFP_KERNEL);
2426 if (!new_dev)
2427 return "NODEV-ALLOCFAILURE"; /* Something non-NULL */
2422 spin_lock(&devname_cache_lock); 2428 spin_lock(&devname_cache_lock);
2423 if (devcache[i]) { 2429 if (devcache[i]) {
2424 if (devcache[i]->device == device) { 2430 if (devcache[i]->device == device) {
2431 kfree(new_dev);
2425 ret = devcache[i]->devname; 2432 ret = devcache[i]->devname;
2426 spin_unlock(&devname_cache_lock); 2433 spin_unlock(&devname_cache_lock);
2427 return ret; 2434 return ret;
2428 } 2435 }
2429 call_rcu(&devcache[i]->rcu, free_devcache); 2436 call_rcu(&devcache[i]->rcu, free_devcache);
2430 } 2437 }
2431 devcache[i] = kmalloc(sizeof(struct devname_cache), GFP_KERNEL); 2438 devcache[i] = new_dev;
2432 if (!devcache[i]) {
2433 spin_unlock(&devname_cache_lock);
2434 return "NODEV-ALLOCFAILURE"; /* Something non-NULL */
2435 }
2436 devcache[i]->device = device; 2439 devcache[i]->device = device;
2437 bd = bdget(device); 2440 bd = bdget(device);
2438 if (bd) { 2441 if (bd) {