x86/smpboot: Init apic mapping before usage

[cascardo/linux.git] / fs / namei.c

diff --git a/fs/namei.c b/fs/namei.c
index cf3fc8d..5b4eed2 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1015,7 +1015,7 @@ const char *get_link(struct nameidata *nd)
        if (!(nd->flags & LOOKUP_RCU)) {
                touch_atime(&last->link);
                cond_resched();
-       } else if (atime_needs_update(&last->link, inode)) {
+       } else if (atime_needs_update_rcu(&last->link, inode)) {
                if (unlikely(unlazy_walk(nd, NULL, 0)))
                        return ERR_PTR(-ECHILD);
                touch_atime(&last->link);
@@ -4668,6 +4668,31 @@ int generic_readlink(struct dentry *dentry, char __user *buffer, int buflen)
 }
 EXPORT_SYMBOL(generic_readlink);
 
+/**
+ * vfs_get_link - get symlink body
+ * @dentry: dentry on which to get symbolic link
+ * @done: caller needs to free returned data with this
+ *
+ * Calls security hook and i_op->get_link() on the supplied inode.
+ *
+ * It does not touch atime.  That's up to the caller if necessary.
+ *
+ * Does not work on "special" symlinks like /proc/$$/fd/N
+ */
+const char *vfs_get_link(struct dentry *dentry, struct delayed_call *done)
+{
+       const char *res = ERR_PTR(-EINVAL);
+       struct inode *inode = d_inode(dentry);
+
+       if (d_is_symlink(dentry)) {
+               res = ERR_PTR(security_inode_readlink(dentry));
+               if (!res)
+                       res = inode->i_op->get_link(dentry, inode, done);
+       }
+       return res;
+}
+EXPORT_SYMBOL(vfs_get_link);
+
 /* get the link contents into pagecache */
 const char *page_get_link(struct dentry *dentry, struct inode *inode,
                          struct delayed_call *callback)