Btrfs: fix regression in scrub path resolving
In commit 4692cf58 we introduced new backref walking code for btrfs. This
assumes we're searching live roots, which requires a transaction context.
While scrubbing, however, we must not join a transaction because this could
deadlock with the commit path. Additionally, what scrub really wants to do
is resolving a logical address in the commit root it's currently checking.
This patch adds support for logical to path resolving on commit roots and
makes scrub use that.
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index abc0fbf..b9b84cd 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -352,8 +352,8 @@
} while (ret != 1);
} else {
swarn.path = path;
- iterate_extent_inodes(fs_info, path, found_key.objectid,
- extent_item_pos,
+ iterate_extent_inodes(fs_info, found_key.objectid,
+ extent_item_pos, 1,
scrub_print_warning_inode, &swarn);
}