From fa59f52f5b1412c373813e24e7cbe5ab44518ed8 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 20 Jun 2019 18:12:16 +0100 Subject: [PATCH] afs: afs_unlink() doesn't need to check dentry->d_inode Don't check that dentry->d_inode is valid in afs_unlink(). We should be able to take that as given. This caused Smatch to issue the following warning: fs/afs/dir.c:1392 afs_unlink() error: we previously assumed 'vnode' could be null (see line 1375) Reported-by: kbuild test robot Reported-by: Dan Carpenter Signed-off-by: David Howells --- fs/afs/dir.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 79d93a2..93fd51c 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -1394,7 +1394,8 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry) { struct afs_fs_cursor fc; struct afs_status_cb *scb; - struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode = NULL; + struct afs_vnode *dvnode = AFS_FS_I(dir); + struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry)); struct key *key; bool need_rehash = false; int ret; @@ -1417,15 +1418,12 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry) } /* Try to make sure we have a callback promise on the victim. */ - if (d_really_is_positive(dentry)) { - vnode = AFS_FS_I(d_inode(dentry)); - ret = afs_validate(vnode, key); - if (ret < 0) - goto error_key; - } + ret = afs_validate(vnode, key); + if (ret < 0) + goto error_key; spin_lock(&dentry->d_lock); - if (vnode && d_count(dentry) > 1) { + if (d_count(dentry) > 1) { spin_unlock(&dentry->d_lock); /* Start asynchronous writeout of the inode */ write_inode_now(d_inode(dentry), 0); -- 2.7.4