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| author |   Tsutomu Itoh <t-itoh@jp.fujitsu.com> | 2012-02-16 16:23:58 +0900 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.cz> | 2012-02-16 17:23:17 +0100 |
| commit | 285190d99fef696ec8b0041787387f013cb71d67 (patch) | |
| tree | d55c5e3f71718cb21f9349280fb160d0403d082d /fs/btrfs/extent_io.c | |
| parent | Btrfs: fix deadlock on page lock when doing auto-defragment (diff) | |
| download | linux-dev-285190d99fef696ec8b0041787387f013cb71d67.tar.xz linux-dev-285190d99fef696ec8b0041787387f013cb71d67.zip | |
Btrfs: check return value of lookup_extent_mapping() correctly
This patch corrects error checking of lookup_extent_mapping().
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index b05d35a7c0f1..8d6f55fbd28e 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3308,7 +3308,7 @@ int try_release_extent_mapping(struct extent_map_tree *map, len = end - start + 1; write_lock(&map->lock); em = lookup_extent_mapping(map, start, len); - if (IS_ERR_OR_NULL(em)) { + if (!em) { write_unlock(&map->lock); break; } |