ceph: only dirty ITER_IOVEC pages for direct read

[linux-2.6-block.git] / fs / namei.c

diff --git a/fs/namei.c b/fs/namei.c
index 921ae32dbc8053813e70b2a6454bf7dc4f85306a..cafa365eeb70a55215806875685bd9ff047884cd 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -559,9 +559,10 @@ static int __nd_alloc_stack(struct nameidata *nd)
 static bool path_connected(const struct path *path)
 {
        struct vfsmount *mnt = path->mnt;
+       struct super_block *sb = mnt->mnt_sb;
 
-       /* Only bind mounts can have disconnected paths */
-       if (mnt->mnt_root == mnt->mnt_sb->s_root)
+       /* Bind mounts and multi-root filesystems can have disconnected paths */
+       if (!(sb->s_iflags & SB_I_MULTIROOT) && (mnt->mnt_root == sb->s_root))
                return true;
 
        return is_subdir(path->dentry, mnt->mnt_root);