get rid of full-hash scan on detaching vfsmounts

[~andy/linux] / fs / pnode.c

diff --git a/fs/pnode.c b/fs/pnode.c
index 3e000a51ac0d09556d184d26422a91d0bc4c0ff9..98e0d3a23fac725f31fb807842a42ac148289f67 100644 (file)
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -217,7 +217,7 @@ static struct mount *get_source(struct mount *dest,
  * @source_mnt: source mount.
  * @tree_list : list of heads of trees to be attached.
  */
-int propagate_mnt(struct mount *dest_mnt, struct dentry *dest_dentry,
+int propagate_mnt(struct mount *dest_mnt, struct mountpoint *dest_mp,
                    struct mount *source_mnt, struct list_head *tree_list)
 {
        struct mount *m, *child;
@@ -244,8 +244,8 @@ int propagate_mnt(struct mount *dest_mnt, struct dentry *dest_dentry,
                        goto out;
                }
 
-               if (is_subdir(dest_dentry, m->mnt.mnt_root)) {
-                       mnt_set_mountpoint(m, dest_dentry, child);
+               if (is_subdir(dest_mp->m_dentry, m->mnt.mnt_root)) {
+                       mnt_set_mountpoint(m, dest_mp, child);
                        list_add_tail(&child->mnt_hash, tree_list);
                } else {
                        /*