/proc/kpageflags: return KPF_BUDDY for "tail" buddy pages

[linux-2.6-block.git] / fs / overlayfs / super.c

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 8d826bd56b26b10d641d7ce1f7a47b747851fac9..619ad4b016d209adcb2b6649d6f654049c860b07 100644 (file)
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -76,12 +76,14 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry)
        if (oe->__upperdentry) {
                type = __OVL_PATH_UPPER;
 
-               if (oe->numlower) {
-                       if (S_ISDIR(dentry->d_inode->i_mode))
-                               type |= __OVL_PATH_MERGE;
-               } else if (!oe->opaque) {
+               /*
+                * Non-dir dentry can hold lower dentry from previous
+                * location. Its purity depends only on opaque flag.
+                */
+               if (oe->numlower && S_ISDIR(dentry->d_inode->i_mode))
+                       type |= __OVL_PATH_MERGE;
+               else if (!oe->opaque)
                        type |= __OVL_PATH_PURE;
-               }
        } else {
                if (oe->numlower > 1)
                        type |= __OVL_PATH_MERGE;
@@ -341,6 +343,7 @@ static const struct dentry_operations ovl_dentry_operations = {
 
 static const struct dentry_operations ovl_reval_dentry_operations = {
        .d_release = ovl_dentry_release,
+       .d_select_inode = ovl_d_select_inode,
        .d_revalidate = ovl_dentry_revalidate,
        .d_weak_revalidate = ovl_dentry_weak_revalidate,
 };