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authorChristoph Hellwig <hch@lst.de>2008-09-06 00:43:20 +0400
committerChris Mason <chris.mason@oracle.com>2008-09-25 19:04:07 +0400
commit50ec891cc54fb865c4c40c45845e60123e0e66ca (patch)
treef428fec2622044cd6b0a3adc90f0d7be6b62b6b9 /fs/btrfs/export.c
parent91c0827de247303c6dfc40a8ec9d8305e1d07986 (diff)
downloadlinux-50ec891cc54fb865c4c40c45845e60123e0e66ca.tar.xz
Btrfs: cleanup d_obtain_alias useage
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> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/export.c')
-rw-r--r--fs/btrfs/export.c17
1 files changed, 2 insertions, 15 deletions
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 292b0b24c302..2b357a6d2407 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -68,7 +68,6 @@ static struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
{
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(struct super_block *sb, u64 objectid,
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(struct super_block *sb, struct fid *fh,
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(struct dentry *child)
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 = {