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authorAl Viro <viro@zeniv.linux.org.uk>2018-05-01 03:14:59 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2018-05-22 21:27:54 +0300
commit191ac107f924bcbdfd9e31fdad94f9e0ae07f813 (patch)
tree9b6f967f12122e51e8ff3bacdd9cf20d77db684c /fs/ubifs
parent5bf3544970eb23a6470fe97c7cc37246509277e2 (diff)
downloadlinux-191ac107f924bcbdfd9e31fdad94f9e0ae07f813.tar.xz
ubifs_lookup: use d_splice_alias()
code is simpler that way Acked-by: Richard Weinberger <richard@nod.at> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ubifs')
-rw-r--r--fs/ubifs/dir.c43
1 files changed, 15 insertions, 28 deletions
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 9d7fb88e172e..4e267cc21c77 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -214,7 +214,7 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
int err;
union ubifs_key key;
struct inode *inode = NULL;
- struct ubifs_dent_node *dent;
+ struct ubifs_dent_node *dent = NULL;
struct ubifs_info *c = dir->i_sb->s_fs_info;
struct fscrypt_name nm;
@@ -229,14 +229,14 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
return ERR_PTR(err);
if (fname_len(&nm) > UBIFS_MAX_NLEN) {
- err = -ENAMETOOLONG;
- goto out_fname;
+ inode = ERR_PTR(-ENAMETOOLONG);
+ goto done;
}
dent = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
if (!dent) {
- err = -ENOMEM;
- goto out_fname;
+ inode = ERR_PTR(-ENOMEM);
+ goto done;
}
if (nm.hash) {
@@ -250,16 +250,16 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
}
if (err) {
- if (err == -ENOENT) {
+ if (err == -ENOENT)
dbg_gen("not found");
- goto done;
- }
- goto out_dent;
+ else
+ inode = ERR_PTR(err);
+ goto done;
}
if (dbg_check_name(c, dent, &nm)) {
- err = -EINVAL;
- goto out_dent;
+ inode = ERR_PTR(-EINVAL);
+ goto done;
}
inode = ubifs_iget(dir->i_sb, le64_to_cpu(dent->inum));
@@ -272,7 +272,7 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
ubifs_err(c, "dead directory entry '%pd', error %d",
dentry, err);
ubifs_ro_mode(c, err);
- goto out_dent;
+ goto done;
}
if (ubifs_crypt_is_encrypted(dir) &&
@@ -280,27 +280,14 @@ static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
!fscrypt_has_permitted_context(dir, inode)) {
ubifs_warn(c, "Inconsistent encryption contexts: %lu/%lu",
dir->i_ino, inode->i_ino);
- err = -EPERM;
- goto out_inode;
+ iput(inode);
+ inode = ERR_PTR(-EPERM);
}
done:
kfree(dent);
fscrypt_free_filename(&nm);
- /*
- * Note, d_splice_alias() would be required instead if we supported
- * NFS.
- */
- d_add(dentry, inode);
- return NULL;
-
-out_inode:
- iput(inode);
-out_dent:
- kfree(dent);
-out_fname:
- fscrypt_free_filename(&nm);
- return ERR_PTR(err);
+ return d_splice_alias(inode, dentry);
}
static int ubifs_create(struct inode *dir, struct dentry *dentry, umode_t mode,