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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-05-01 01:44:57 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-09-14 07:18:11 +0200 |
| commit | 4c5eface5d0e4eb7f77be346193c2850e7e3b983 (patch) | |
| tree | f827eb485149bc52974a41a8d0b5f1d553953fb5 /fs/reiserfs/bitmap.c | |
| parent | 148d3504c1d9f964cf14fafc46d2b7d1f0bed2b1 (diff) | |
| download | linux-4c5eface5d0e4eb7f77be346193c2850e7e3b983.tar.bz2 | |
kill-the-BKL/reiserfs: release the write lock inside reiserfs_read_bitmap_block()
reiserfs_read_bitmap_block() uses sb_bread() to read the bitmap block. This
helper might sleep.
Then, when the bkl was used, it was released at this point. We can then
relax the write lock too here.
[ 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>
Diffstat (limited to 'fs/reiserfs/bitmap.c')
| -rw-r--r-- | fs/reiserfs/bitmap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c index 147033461b87..685495707181 100644 --- a/fs/reiserfs/bitmap.c +++ b/fs/reiserfs/bitmap.c @@ -1249,7 +1249,9 @@ struct buffer_head *reiserfs_read_bitmap_block(struct super_block *sb, else if (bitmap == 0) block = (REISERFS_DISK_OFFSET_IN_BYTES >> sb->s_blocksize_bits) + 1; + reiserfs_write_unlock(sb); bh = sb_bread(sb, block); + reiserfs_write_lock(sb); if (bh == NULL) reiserfs_warning(sb, "sh-2029: %s: bitmap block (#%u) " "reading failed", __func__, block); |