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namei: fold unlazy_link() into its sole caller

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-01-08 22:35:31 -05:00
parent 7ce7d89f48
commit ad1633a151
1 changed files with 11 additions and 21 deletions
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32
fs/namei.c
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@ -749,24 +749,6 @@ static int unlazy_walk(struct nameidata *nd, struct dentry *dentry, unsigned seq
return -ECHILD;
}
static int unlazy_link(struct nameidata *nd, struct path *link, unsigned seq)
{
if (unlikely(!legitimize_path(nd, link, seq))) {
drop_links(nd);
nd->depth = 0;
nd->flags &= ~LOOKUP_RCU;
nd->path.mnt = NULL;
nd->path.dentry = NULL;
if (!(nd->flags & LOOKUP_ROOT))
nd->root.mnt = NULL;
rcu_read_unlock();
} else if (likely(unlazy_walk(nd, NULL, 0)) == 0) {
return 0;
}
path_put(link);
return -ECHILD;
}
static inline int d_revalidate(struct dentry *dentry, unsigned int flags)
{
return dentry->d_op->d_revalidate(dentry, flags);
@ -1706,9 +1688,17 @@ static int pick_link(struct nameidata *nd, struct path *link,
error = nd_alloc_stack(nd);
if (unlikely(error)) {
if (error == -ECHILD) {
if (unlikely(unlazy_link(nd, link, seq)))
return -ECHILD;
error = nd_alloc_stack(nd);
if (unlikely(!legitimize_path(nd, link, seq))) {
drop_links(nd);
nd->depth = 0;
nd->flags &= ~LOOKUP_RCU;
nd->path.mnt = NULL;
nd->path.dentry = NULL;
if (!(nd->flags & LOOKUP_ROOT))
nd->root.mnt = NULL;
rcu_read_unlock();
} else if (likely(unlazy_walk(nd, NULL, 0)) == 0)
error = nd_alloc_stack(nd);
}
if (error) {
path_put(link);