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authorJan Schmidt <list.btrfs@jan-o-sch.net>2012-03-23 20:32:28 +0400
committerJan Schmidt <list.btrfs@jan-o-sch.net>2012-03-27 16:51:21 +0400
commit7a3ae2f8c8c8432e65467b7fc84d5deab04061a0 (patch)
treee93c46eb8def633533fe80032872f71b36fc03b8 /fs/btrfs/backref.h
parent103e976616fe9c2a3e40764c979fa1a592274da2 (diff)
downloadlinux-7a3ae2f8c8c8432e65467b7fc84d5deab04061a0.tar.xz
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>
Diffstat (limited to 'fs/btrfs/backref.h')
-rw-r--r--fs/btrfs/backref.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h
index d00dfa9ca934..57ea2e959e4d 100644
--- a/fs/btrfs/backref.h
+++ b/fs/btrfs/backref.h
@@ -22,6 +22,8 @@
#include "ioctl.h"
#include "ulist.h"
+#define BTRFS_BACKREF_SEARCH_COMMIT_ROOT ((struct btrfs_trans_handle *)0)
+
struct inode_fs_paths {
struct btrfs_path *btrfs_path;
struct btrfs_root *fs_root;
@@ -44,9 +46,8 @@ int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
u64 *out_root, u8 *out_level);
int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
- struct btrfs_path *path,
u64 extent_item_objectid,
- u64 extent_offset,
+ u64 extent_offset, int search_commit_root,
iterate_extent_inodes_t *iterate, void *ctx);
int iterate_inodes_from_logical(u64 logical, struct btrfs_fs_info *fs_info,