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authorJulia Lawall <julia@diku.dk>2010-10-29 15:14:23 -0400
committerChris Mason <chris.mason@oracle.com>2010-10-29 15:14:23 -0400
commitd0b678cb0a26783ab7238784f1e7e608e5caafa3 (patch)
treea912b938a6558550960f6b07139bd119d86f89eb /fs
parent2354d08fe9aeec3e451b85cb5387a6b28dbca0b1 (diff)
Btrfs: Use ERR_CAST helpers
Use ERR_CAST(x) rather than ERR_PTR(PTR_ERR(x)). The former makes more clear what is the purpose of the operation, which otherwise looks like a no-op. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ type T; T x; identifier f; @@ T f (...) { <+... - ERR_PTR(PTR_ERR(x)) + x ...+> } @@ expression x; @@ - ERR_PTR(PTR_ERR(x)) + ERR_CAST(x) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/extent_map.c4
-rw-r--r--fs/btrfs/super.c2
2 files changed, 3 insertions, 3 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 454ca52d645..23cb8da3ff6 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -335,7 +335,7 @@ struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree,
goto out;
}
if (IS_ERR(rb_node)) {
- em = ERR_PTR(PTR_ERR(rb_node));
+ em = ERR_CAST(rb_node);
goto out;
}
em = rb_entry(rb_node, struct extent_map, rb_node);
@@ -384,7 +384,7 @@ struct extent_map *search_extent_mapping(struct extent_map_tree *tree,
goto out;
}
if (IS_ERR(rb_node)) {
- em = ERR_PTR(PTR_ERR(rb_node));
+ em = ERR_CAST(rb_node);
goto out;
}
em = rb_entry(rb_node, struct extent_map, rb_node);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 65b62daa3f8..d7fb2733d02 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -389,7 +389,7 @@ static struct dentry *get_default_root(struct super_block *sb,
find_root:
new_root = btrfs_read_fs_root_no_name(root->fs_info, &location);
if (IS_ERR(new_root))
- return ERR_PTR(PTR_ERR(new_root));
+ return ERR_CAST(new_root);
if (btrfs_root_refs(&new_root->root_item) == 0)
return ERR_PTR(-ENOENT);