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authorFrederic Weisbecker <fweisbec@gmail.com>2009-05-01 01:44:57 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2009-09-14 07:18:11 +0200
commit4c5eface5d0e4eb7f77be346193c2850e7e3b983 (patch)
treef827eb485149bc52974a41a8d0b5f1d553953fb5 /fs/reiserfs/bitmap.c
parent148d3504c1d9f964cf14fafc46d2b7d1f0bed2b1 (diff)
downloadlinux-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.c2
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);