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kill-the-BKL/reiserfs: release the write lock on flush_commit_list() 

flush_commit_list() uses ll_rw_block() to commit the pending log blocks.
ll_rw_block() might sleep, and the bkl was released at this point. Then
we can also relax the write lock at this point.

[ Impact: release the reiserfs write lock when it is not needed ]

Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Frederic Weisbecker 2009-05-01 02:27:39 +02:00
parent 4c5eface5d
commit 6e3647acb4
1 changed files with 5 additions and 2 deletions
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7
fs/reiserfs/journal.c
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@ -1120,8 +1120,11 @@ static int flush_commit_list(struct super_block *s,
SB_ONDISK_JOURNAL_SIZE(s);
tbh = journal_find_get_block(s, bn);
if (tbh) {
if (buffer_dirty(tbh))
ll_rw_block(WRITE, 1, &tbh) ;
if (buffer_dirty(tbh)) {
reiserfs_write_unlock(s);
ll_rw_block(WRITE, 1, &tbh);
reiserfs_write_lock(s);
}
put_bh(tbh) ;
}
}