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| author | Wang Shilong <wangsl.fnst@cn.fujitsu.com> | 2014-02-06 20:02:29 +0800 |
|---|---|---|
| committer | Josef Bacik <jbacik@fb.com> | 2014-03-10 15:15:54 -0400 |
| commit | 850a8cdffe41abec9e3319d7801c49eced0778a1 (patch) | |
| tree | 984f0986b44bfa8fc6e6395acdab4b15d333082b /fs/btrfs/backref.c | |
| parent | f88ba6a2a44ee98e8d59654463dc157bb6d13c43 (diff) | |
| download | linux-850a8cdffe41abec9e3319d7801c49eced0778a1.tar.gz | |
Btrfs: switch to btrfs_previous_extent_item()
Since we have introduced btrfs_previous_extent_item() to search previous extent item, just switch into it. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Reviewed-by: Filipe Manana <fdmanana@gmail.com> Signed-off-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'fs/btrfs/backref.c')
| -rw-r--r-- | fs/btrfs/backref.c | 37 |
1 files changed, 6 insertions, 31 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 903fe68e017b..a88da721dfc5 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -1325,38 +1325,13 @@ int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical, if (ret < 0) return ret; - while (1) { - u32 nritems; - if (path->slots[0] == 0) { - btrfs_set_path_blocking(path); - ret = btrfs_prev_leaf(fs_info->extent_root, path); - if (ret != 0) { - if (ret > 0) { - pr_debug("logical %llu is not within " - "any extent\n", logical); - ret = -ENOENT; - } - return ret; - } - } else { - path->slots[0]--; - } - nritems = btrfs_header_nritems(path->nodes[0]); - if (nritems == 0) { - pr_debug("logical %llu is not within any extent\n", - logical); - return -ENOENT; - } - if (path->slots[0] == nritems) - path->slots[0]--; - - btrfs_item_key_to_cpu(path->nodes[0], found_key, - path->slots[0]); - if (found_key->type == BTRFS_EXTENT_ITEM_KEY || - found_key->type == BTRFS_METADATA_ITEM_KEY) - break; + ret = btrfs_previous_extent_item(fs_info->extent_root, path, 0); + if (ret) { + if (ret > 0) + ret = -ENOENT; + return ret; } - + btrfs_item_key_to_cpu(path->nodes[0], found_key, path->slots[0]); if (found_key->type == BTRFS_METADATA_ITEM_KEY) size = fs_info->extent_root->leafsize; else if (found_key->type == BTRFS_EXTENT_ITEM_KEY) |