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authorJosef Bacik <jbacik@fusionio.com>2013-04-17 12:16:59 -0400
committerJosef Bacik <jbacik@fusionio.com>2013-05-06 15:55:00 -0400
commit62dbd7176e196cd042c5542696981b268264fe92 (patch)
tree90992e6775549b70fa3aa106a40c25d964dc78c2
parent534e6623b7bc03ddcf6c98b9398ff512d5135fe5 (diff)
Btrfs: fix lockdep warning
The locking order for stuff is __sb_start_write ordered_mutex but with sync() we don't do __sb_start_write for some strange reason, which means that our iput in wait_ordered_extents could start a transaction which does the __sb_start_write while we're holding the ordered_mutex. Fix this by using delayed iput in sync. Thanks, Reported-by: David Sterba <dsterba@suse.cz> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
-rw-r--r--fs/btrfs/super.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 5dc54ae5ac81..a4807ced23cc 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -866,7 +866,7 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
return 0;
}
- btrfs_wait_ordered_extents(root, 0);
+ btrfs_wait_ordered_extents(root, 1);
trans = btrfs_attach_transaction_barrier(root);
if (IS_ERR(trans)) {