afs: dget_parent() can't return a negative dentry

[firefly-linux-kernel-4.4.55.git] / fs / afs / dir.c

diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 0b74d3176ab7c9293c0583e1b2cff730e7f4df0d..529300327f4574d2dc36345be3c7398442548e08 100644 (file)
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -600,9 +600,6 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
 
        /* lock down the parent dentry so we can peer at it */
        parent = dget_parent(dentry);
-       if (!parent->d_inode)
-               goto out_bad;
-
        dir = AFS_FS_I(parent->d_inode);
 
        /* validate the parent directory */
@@ -751,10 +748,6 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
        _enter("{%x:%u},{%s},%ho",
               dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, mode);
 
-       ret = -ENAMETOOLONG;
-       if (dentry->d_name.len >= AFSNAMEMAX)
-               goto error;
-
        key = afs_request_key(dvnode->volume->cell);
        if (IS_ERR(key)) {
                ret = PTR_ERR(key);
@@ -816,10 +809,6 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry)
        _enter("{%x:%u},{%s}",
               dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name);
 
-       ret = -ENAMETOOLONG;
-       if (dentry->d_name.len >= AFSNAMEMAX)
-               goto error;
-
        key = afs_request_key(dvnode->volume->cell);
        if (IS_ERR(key)) {
                ret = PTR_ERR(key);
@@ -936,10 +925,6 @@ static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
        _enter("{%x:%u},{%s},%ho,",
               dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, mode);
 
-       ret = -ENAMETOOLONG;
-       if (dentry->d_name.len >= AFSNAMEMAX)
-               goto error;
-
        key = afs_request_key(dvnode->volume->cell);
        if (IS_ERR(key)) {
                ret = PTR_ERR(key);
@@ -1005,10 +990,6 @@ static int afs_link(struct dentry *from, struct inode *dir,
               dvnode->fid.vid, dvnode->fid.vnode,
               dentry->d_name.name);
 
-       ret = -ENAMETOOLONG;
-       if (dentry->d_name.len >= AFSNAMEMAX)
-               goto error;
-
        key = afs_request_key(dvnode->volume->cell);
        if (IS_ERR(key)) {
                ret = PTR_ERR(key);
@@ -1053,10 +1034,6 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry,
               dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name,
               content);
 
-       ret = -ENAMETOOLONG;
-       if (dentry->d_name.len >= AFSNAMEMAX)
-               goto error;
-
        ret = -EINVAL;
        if (strlen(content) >= AFSPATHMAX)
                goto error;
@@ -1127,10 +1104,6 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
               new_dvnode->fid.vid, new_dvnode->fid.vnode,
               new_dentry->d_name.name);
 
-       ret = -ENAMETOOLONG;
-       if (new_dentry->d_name.len >= AFSNAMEMAX)
-               goto error;
-
        key = afs_request_key(orig_dvnode->volume->cell);
        if (IS_ERR(key)) {
                ret = PTR_ERR(key);