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authorAl Viro <viro@zeniv.linux.org.uk>2018-06-24 17:43:51 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2018-08-05 22:44:14 +0300
commit34b2a88fb4aa4de34e1d5f9fc2761b746980f9b1 (patch)
tree0e8d0acb50520154d040fa7401e0c70282c58a31 /fs/afs
parent855371bd01b4cd8cf0e2b8ca172a5c30a481f963 (diff)
downloadlinux-34b2a88fb4aa4de34e1d5f9fc2761b746980f9b1.tar.xz
afs_lookup(): switch to d_splice_alias()
->lookup() methods can (and should) use d_splice_alias() instead of d_add(). Even if they are not going to be hit by open_by_handle(), code does get copied around; besides, d_splice_alias() has better calling conventions for use in ->lookup(), so the code gets simpler. Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/afs')
-rw-r--r--fs/afs/dir.c47
1 files changed, 12 insertions, 35 deletions
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 7d623008157f..52f44255f65d 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -822,6 +822,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
{
struct afs_vnode *dvnode = AFS_FS_I(dir);
struct inode *inode;
+ struct dentry *d;
struct key *key;
int ret;
@@ -862,43 +863,19 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
afs_stat_v(dvnode, n_lookup);
inode = afs_do_lookup(dir, dentry, key);
- if (IS_ERR(inode)) {
- ret = PTR_ERR(inode);
- if (ret == -ENOENT) {
- inode = afs_try_auto_mntpt(dentry, dir);
- if (!IS_ERR(inode)) {
- key_put(key);
- goto success;
- }
-
- ret = PTR_ERR(inode);
- }
-
- key_put(key);
- if (ret == -ENOENT) {
- d_add(dentry, NULL);
- _leave(" = NULL [negative]");
- return NULL;
- }
- _leave(" = %d [do]", ret);
- return ERR_PTR(ret);
- }
- dentry->d_fsdata = (void *)(unsigned long)dvnode->status.data_version;
-
- /* instantiate the dentry */
key_put(key);
- if (IS_ERR(inode)) {
- _leave(" = %ld", PTR_ERR(inode));
- return ERR_CAST(inode);
+ if (inode == ERR_PTR(-ENOENT)) {
+ inode = afs_try_auto_mntpt(dentry, dir);
+ if (inode == ERR_PTR(-ENOENT))
+ inode = NULL;
+ } else {
+ dentry->d_fsdata =
+ (void *)(unsigned long)dvnode->status.data_version;
}
-
-success:
- d_add(dentry, inode);
- _leave(" = 0 { ino=%lu v=%u }",
- d_inode(dentry)->i_ino,
- d_inode(dentry)->i_generation);
-
- return NULL;
+ d = d_splice_alias(inode, dentry);
+ if (!IS_ERR_OR_NULL(d))
+ d->d_fsdata = dentry->d_fsdata;
+ return d;
}
/*