nilfs2: add /sys/fs/nilfs2/<device>/segctor group

[linux-beck.git] / fs / inode.c

diff --git a/fs/inode.c b/fs/inode.c
index f96d2a6f88cca3a2e7c6e40bd122a7edeb43fc35..5938f3928944c75ee2f52fdd38119ecfdf41f65f 100644 (file)
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -105,7 +105,7 @@ long get_nr_dirty_inodes(void)
  * Handle nr_inode sysctl
  */
 #ifdef CONFIG_SYSCTL
-int proc_nr_inodes(ctl_table *table, int write,
+int proc_nr_inodes(struct ctl_table *table, int write,
                   void __user *buffer, size_t *lenp, loff_t *ppos)
 {
        inodes_stat.nr_inodes = get_nr_inodes();
@@ -1695,13 +1695,6 @@ int inode_needs_sync(struct inode *inode)
 }
 EXPORT_SYMBOL(inode_needs_sync);
 
-int inode_wait(void *word)
-{
-       schedule();
-       return 0;
-}
-EXPORT_SYMBOL(inode_wait);
-
 /*
  * If we try to find an inode in the inode hash while it is being
  * deleted, we have to wait until the filesystem completes its
@@ -1839,14 +1832,18 @@ EXPORT_SYMBOL(inode_init_owner);
  * inode_owner_or_capable - check current task permissions to inode
  * @inode: inode being checked
  *
- * Return true if current either has CAP_FOWNER to the inode, or
- * owns the file.
+ * Return true if current either has CAP_FOWNER in a namespace with the
+ * inode owner uid mapped, or owns the file.
  */
 bool inode_owner_or_capable(const struct inode *inode)
 {
+       struct user_namespace *ns;
+
        if (uid_eq(current_fsuid(), inode->i_uid))
                return true;
-       if (inode_capable(inode, CAP_FOWNER))
+
+       ns = current_user_ns();
+       if (ns_capable(ns, CAP_FOWNER) && kuid_has_mapping(ns, inode->i_uid))
                return true;
        return false;
 }