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authorSteven Whitehouse <swhiteho@redhat.com>2006-09-13 11:13:27 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2006-09-13 11:13:27 -0400
commitfaa31ce85f626dff30ba865684bd1f0ad97a9ca0 (patch)
tree24e2573df5da036c832972fecc227e2628941aac /fs/gfs2
parent16feb9fec0e1f74339bd6992130ceedb3aa9567e (diff)
[GFS2] Tidy up log.c
Based upon previous feedback from lkml and also removing some commented out debugging which is no longer needed. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/log.c40
1 files changed, 14 insertions, 26 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 8fce592f4011..50f88059c3d5 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -47,8 +47,7 @@ unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
47 unsigned int first, second; 47 unsigned int first, second;
48 48
49 blks = 1; 49 blks = 1;
50 first = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / 50 first = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / ssize;
51 ssize;
52 51
53 if (nstruct > first) { 52 if (nstruct > first) {
54 second = (sdp->sd_sb.sb_bsize - 53 second = (sdp->sd_sb.sb_bsize -
@@ -230,8 +229,7 @@ static u64 log_bmap(struct gfs2_sbd *sdp, unsigned int lbn)
230 * Returns: the distance in blocks 229 * Returns: the distance in blocks
231 */ 230 */
232 231
233static inline unsigned int log_distance(struct gfs2_sbd *sdp, 232static inline unsigned int log_distance(struct gfs2_sbd *sdp, unsigned int newer,
234 unsigned int newer,
235 unsigned int older) 233 unsigned int older)
236{ 234{
237 int dist; 235 int dist;
@@ -250,11 +248,10 @@ static unsigned int current_tail(struct gfs2_sbd *sdp)
250 248
251 gfs2_log_lock(sdp); 249 gfs2_log_lock(sdp);
252 250
253 if (list_empty(&sdp->sd_ail1_list)) 251 if (list_empty(&sdp->sd_ail1_list)) {
254 tail = sdp->sd_log_head; 252 tail = sdp->sd_log_head;
255 else { 253 } else {
256 ai = list_entry(sdp->sd_ail1_list.prev, struct gfs2_ail, 254 ai = list_entry(sdp->sd_ail1_list.prev, struct gfs2_ail, ai_list);
257 ai_list);
258 tail = ai->ai_first; 255 tail = ai->ai_first;
259 } 256 }
260 257
@@ -266,8 +263,7 @@ static unsigned int current_tail(struct gfs2_sbd *sdp)
266static inline void log_incr_head(struct gfs2_sbd *sdp) 263static inline void log_incr_head(struct gfs2_sbd *sdp)
267{ 264{
268 if (sdp->sd_log_flush_head == sdp->sd_log_tail) 265 if (sdp->sd_log_flush_head == sdp->sd_log_tail)
269 gfs2_assert_withdraw(sdp, 266 gfs2_assert_withdraw(sdp, sdp->sd_log_flush_head == sdp->sd_log_head);
270 sdp->sd_log_flush_head == sdp->sd_log_head);
271 267
272 if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) { 268 if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) {
273 sdp->sd_log_flush_head = 0; 269 sdp->sd_log_flush_head = 0;
@@ -343,9 +339,7 @@ static void log_pull_tail(struct gfs2_sbd *sdp, unsigned int new_tail, int pull)
343 339
344 gfs2_log_lock(sdp); 340 gfs2_log_lock(sdp);
345 sdp->sd_log_blks_free += dist - (pull ? 1 : 0); 341 sdp->sd_log_blks_free += dist - (pull ? 1 : 0);
346 /* printk(KERN_INFO "pull tail refunding %u blocks (%u left) pull=%d\n", dist - (pull ? 1 : 0), sdp->sd_log_blks_free, pull); */ 342 gfs2_assert_withdraw(sdp, sdp->sd_log_blks_free <= sdp->sd_jdesc->jd_blocks);
347 gfs2_assert_withdraw(sdp,
348 sdp->sd_log_blks_free <= sdp->sd_jdesc->jd_blocks);
349 gfs2_log_unlock(sdp); 343 gfs2_log_unlock(sdp);
350 344
351 sdp->sd_log_tail = new_tail; 345 sdp->sd_log_tail = new_tail;
@@ -366,8 +360,6 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull)
366 unsigned int tail; 360 unsigned int tail;
367 u32 hash; 361 u32 hash;
368 362
369 /* printk(KERN_INFO "log write header start (flags=%08x, pull=%d)\n", flags, pull); */
370
371 bh = sb_getblk(sdp->sd_vfs, blkno); 363 bh = sb_getblk(sdp->sd_vfs, blkno);
372 lock_buffer(bh); 364 lock_buffer(bh);
373 memset(bh->b_data, 0, bh->b_size); 365 memset(bh->b_data, 0, bh->b_size);
@@ -402,8 +394,6 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull)
402 394
403 sdp->sd_log_idle = (tail == sdp->sd_log_flush_head); 395 sdp->sd_log_idle = (tail == sdp->sd_log_flush_head);
404 log_incr_head(sdp); 396 log_incr_head(sdp);
405
406 /* printk(KERN_INFO "log write header out\n"); */
407} 397}
408 398
409static void log_flush_commit(struct gfs2_sbd *sdp) 399static void log_flush_commit(struct gfs2_sbd *sdp)
@@ -459,8 +449,7 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
459 INIT_LIST_HEAD(&ai->ai_ail1_list); 449 INIT_LIST_HEAD(&ai->ai_ail1_list);
460 INIT_LIST_HEAD(&ai->ai_ail2_list); 450 INIT_LIST_HEAD(&ai->ai_ail2_list);
461 451
462 gfs2_assert_withdraw(sdp, 452 gfs2_assert_withdraw(sdp, sdp->sd_log_num_buf == sdp->sd_log_commited_buf);
463 sdp->sd_log_num_buf == sdp->sd_log_commited_buf);
464 gfs2_assert_withdraw(sdp, 453 gfs2_assert_withdraw(sdp,
465 sdp->sd_log_num_revoke == sdp->sd_log_commited_revoke); 454 sdp->sd_log_num_revoke == sdp->sd_log_commited_revoke);
466 455
@@ -476,13 +465,12 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
476 lops_after_commit(sdp, ai); 465 lops_after_commit(sdp, ai);
477 sdp->sd_log_head = sdp->sd_log_flush_head; 466 sdp->sd_log_head = sdp->sd_log_flush_head;
478 467
479 /* printk(KERN_INFO "sd_log_num_hdrs %u\n", sdp->sd_log_num_hdrs); */
480 sdp->sd_log_blks_free -= sdp->sd_log_num_hdrs; 468 sdp->sd_log_blks_free -= sdp->sd_log_num_hdrs;
481 469
482 sdp->sd_log_blks_reserved = 470 sdp->sd_log_blks_reserved = 0;
483 sdp->sd_log_commited_buf = 471 sdp->sd_log_commited_buf = 0;
484 sdp->sd_log_num_hdrs = 472 sdp->sd_log_num_hdrs = 0;
485 sdp->sd_log_commited_revoke = 0; 473 sdp->sd_log_commited_revoke = 0;
486 474
487 gfs2_log_lock(sdp); 475 gfs2_log_lock(sdp);
488 if (!list_empty(&ai->ai_ail1_list)) { 476 if (!list_empty(&ai->ai_ail1_list)) {
@@ -551,8 +539,9 @@ void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
551 if (sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks)) { 539 if (sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks)) {
552 gfs2_log_unlock(sdp); 540 gfs2_log_unlock(sdp);
553 gfs2_log_flush(sdp, NULL); 541 gfs2_log_flush(sdp, NULL);
554 } else 542 } else {
555 gfs2_log_unlock(sdp); 543 gfs2_log_unlock(sdp);
544 }
556} 545}
557 546
558/** 547/**
@@ -580,7 +569,6 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp)
580 569
581 log_write_header(sdp, GFS2_LOG_HEAD_UNMOUNT, 0); 570 log_write_header(sdp, GFS2_LOG_HEAD_UNMOUNT, 0);
582 571
583 /* printk(KERN_INFO "sd_log_blks_free %u, sd_jdesc->jd_blocks %u\n", sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); */
584 gfs2_assert_warn(sdp, sdp->sd_log_blks_free == sdp->sd_jdesc->jd_blocks); 572 gfs2_assert_warn(sdp, sdp->sd_log_blks_free == sdp->sd_jdesc->jd_blocks);
585 gfs2_assert_warn(sdp, sdp->sd_log_head == sdp->sd_log_tail); 573 gfs2_assert_warn(sdp, sdp->sd_log_head == sdp->sd_log_tail);
586 gfs2_assert_warn(sdp, list_empty(&sdp->sd_ail2_list)); 574 gfs2_assert_warn(sdp, list_empty(&sdp->sd_ail2_list));