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authorJeff Mahoney <jeffm@suse.com>2008-07-25 01:46:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:33 -0700
commitafe70259076fff0446001eaa1a287f615241a357 (patch)
treed619c7f6235264a7b08aec16ba3563a686415079 /fs
parentf68215c4640a38d66429014e524a627bf572d26a (diff)
downloadlinux-2.6.34-ux500-afe70259076fff0446001eaa1a287f615241a357.tar.gz
reiserfs: convert j_flush_sem to mutex
j_flush_sem is a semaphore but uses it as if it were a mutex. This patch converts it to a mutex. [akpm@linux-foundation.org: fix mutex_trylock retval treatment] Signed-off-by: Jeff Mahoney <jeffm@suse.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Chris Mason <chris.mason@oracle.com> Cc: Edward Shishkin <edward.shishkin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/reiserfs/journal.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 0f7b1e807e6..3cb4a562030 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -1411,8 +1411,8 @@ static int flush_journal_list(struct super_block *s,
/* if flushall == 0, the lock is already held */
if (flushall) {
- down(&journal->j_flush_sem);
- } else if (!down_trylock(&journal->j_flush_sem)) {
+ mutex_lock(&journal->j_flush_mutex);
+ } else if (mutex_trylock(&journal->j_flush_mutex)) {
BUG();
}
@@ -1642,7 +1642,7 @@ static int flush_journal_list(struct super_block *s,
jl->j_state = 0;
put_journal_list(s, jl);
if (flushall)
- up(&journal->j_flush_sem);
+ mutex_unlock(&journal->j_flush_mutex);
put_fs_excl();
return err;
}
@@ -1772,12 +1772,12 @@ static int kupdate_transactions(struct super_block *s,
struct reiserfs_journal *journal = SB_JOURNAL(s);
chunk.nr = 0;
- down(&journal->j_flush_sem);
+ mutex_lock(&journal->j_flush_mutex);
if (!journal_list_still_alive(s, orig_trans_id)) {
goto done;
}
- /* we've got j_flush_sem held, nobody is going to delete any
+ /* we've got j_flush_mutex held, nobody is going to delete any
* of these lists out from underneath us
*/
while ((num_trans && transactions_flushed < num_trans) ||
@@ -1812,7 +1812,7 @@ static int kupdate_transactions(struct super_block *s,
}
done:
- up(&journal->j_flush_sem);
+ mutex_unlock(&journal->j_flush_mutex);
return ret;
}
@@ -2838,7 +2838,7 @@ int journal_init(struct super_block *p_s_sb, const char *j_dev_name,
journal->j_first = NULL;
init_waitqueue_head(&(journal->j_join_wait));
mutex_init(&journal->j_mutex);
- sema_init(&journal->j_flush_sem, 1);
+ mutex_init(&journal->j_flush_mutex);
journal->j_trans_id = 10;
journal->j_mount_id = 10;