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vfs: do_last(): make ENOENT exit RCU safe

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This will allow this code to be used in RCU mode.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Miklos Szeredi
2012-05-21 17:30:10 +02:00
committed by Al Viro
parent d45ea86792
commit 54c33e7f95
1 changed files with 4 additions and 2 deletions
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6
fs/namei.c
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@@ -2361,8 +2361,10 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
BUG_ON(nd->flags & LOOKUP_RCU); BUG_ON(nd->flags & LOOKUP_RCU);
inode = path->dentry->d_inode; inode = path->dentry->d_inode;
error = -ENOENT; error = -ENOENT;
if (!inode) if (!inode) {
goto exit_dput; path_to_nameidata(path, nd);
goto exit;
}
if (should_follow_link(inode, !symlink_ok)) { if (should_follow_link(inode, !symlink_ok)) {
if (nd->flags & LOOKUP_RCU) { if (nd->flags & LOOKUP_RCU) {