d_obtain_alias is intended as a tailcall that can pass in errors encoded
in the inode pointer if needed, so use it that way instead of
duplicating the error handling.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Index: btrfs-unstable/export.c
==================================================================---
btrfs-unstable.orig/export.c 2008-08-28 19:56:13.000000000 -0300
+++ btrfs-unstable/export.c 2008-08-28 19:57:04.000000000 -0300
@@ -68,7 +68,6 @@ static struct dentry *btrfs_get_dentry(s
{
struct btrfs_root *root;
struct inode *inode;
- struct dentry *result;
struct btrfs_key key;
key.objectid = root_objectid;
@@ -92,11 +91,7 @@ static struct dentry *btrfs_get_dentry(s
return ERR_PTR(-ESTALE);
}
- result = d_obtain_alias(inode);
- if (!result)
- return ERR_PTR(-ENOMEM);
-
- return result;
+ return d_obtain_alias(inode);
}
static struct dentry *btrfs_fh_to_parent(struct super_block *sb, struct fid
*fh,
@@ -148,8 +143,6 @@ static struct dentry *btrfs_fh_to_dentry
static struct dentry *btrfs_get_parent(struct dentry *child)
{
struct inode *dir = child->d_inode;
- struct inode *inode;
- struct dentry *parent;
struct btrfs_root *root = BTRFS_I(dir)->root;
struct btrfs_key key;
struct btrfs_path *path;
@@ -203,13 +196,7 @@ static struct dentry *btrfs_get_parent(s
btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
key.offset = 0;
- inode = btrfs_iget(root->fs_info->sb, &key, root, NULL);
-
- parent = d_obtain_alias(inode);
- if (!parent)
- parent = ERR_PTR(-ENOMEM);
-
- return parent;
+ return d_obtain_alias(btrfs_iget(root->fs_info->sb, &key, root,
NULL));
}
const struct export_operations btrfs_export_ops = {
--
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