diff options
| author | Zhao Lei <zhaolei@cn.fujitsu.com> | 2015-07-22 13:14:48 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-08-09 07:07:12 -0700 |
| commit | d7cad2389560f3249435ac928bc13e9408ae467e (patch) | |
| tree | 1c14e07f499eac31c20fd3467b36a6722e5d8c69 /fs/btrfs/scrub.c | |
| parent | fe8cf654b1ccf7f0b49cc0de9e6ad8a56529e384 (diff) | |
| download | linux-d7cad2389560f3249435ac928bc13e9408ae467e.tar.bz2 | |
btrfs: Bypass unrelated items before accessing its contents in scrub
When we access extent_root in scrub_stripe() and
scrub_raid56_parity(), we need bypass unrelated tree item firstly
before using its contents to do other condition.
It is not a bug fix, only making code sequence in logic.
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/scrub.c')
| -rw-r--r-- | fs/btrfs/scrub.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index b03dd10e1d25..fadf5fcd9306 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -2856,6 +2856,10 @@ static noinline_for_stack int scrub_raid56_parity(struct scrub_ctx *sctx, } btrfs_item_key_to_cpu(l, &key, slot); + if (key.type != BTRFS_EXTENT_ITEM_KEY && + key.type != BTRFS_METADATA_ITEM_KEY) + goto next; + if (key.type == BTRFS_METADATA_ITEM_KEY) bytes = root->nodesize; else @@ -2864,10 +2868,6 @@ static noinline_for_stack int scrub_raid56_parity(struct scrub_ctx *sctx, if (key.objectid + bytes <= logic_start) goto next; - if (key.type != BTRFS_EXTENT_ITEM_KEY && - key.type != BTRFS_METADATA_ITEM_KEY) - goto next; - if (key.objectid >= logic_end) { stop_loop = 1; break; @@ -3193,6 +3193,10 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, } btrfs_item_key_to_cpu(l, &key, slot); + if (key.type != BTRFS_EXTENT_ITEM_KEY && + key.type != BTRFS_METADATA_ITEM_KEY) + goto next; + if (key.type == BTRFS_METADATA_ITEM_KEY) bytes = root->nodesize; else @@ -3201,10 +3205,6 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, if (key.objectid + bytes <= logical) goto next; - if (key.type != BTRFS_EXTENT_ITEM_KEY && - key.type != BTRFS_METADATA_ITEM_KEY) - goto next; - if (key.objectid >= logical + map->stripe_len) { /* out of this device extent */ if (key.objectid >= logic_end) |