overlayfs: embed middle into overlay_readdir_data

same story...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
index a9ee2c1..910553f 100644 (file)
--- a/fs/overlayfs/readdir.c
+++ b/fs/overlayfs/readdir.c
@@ -38,7 +38,7 @@ struct ovl_readdir_data {
        bool is_merge;
        struct rb_root root;
        struct list_head *list;
-       struct list_head *middle;
+       struct list_head middle;
        int count;
        int err;
 };
@@ -139,13 +139,13 @@ static int ovl_fill_lower(struct ovl_readdir_data *rdd,
 
        p = ovl_cache_entry_find(&rdd->root, name, namelen);
        if (p) {
-               list_move_tail(&p->l_node, rdd->middle);
+               list_move_tail(&p->l_node, &rdd->middle);
        } else {
                p = ovl_cache_entry_new(name, namelen, ino, d_type);
                if (p == NULL)
                        rdd->err = -ENOMEM;
                else
-                       list_add_tail(&p->l_node, rdd->middle);
+                       list_add_tail(&p->l_node, &rdd->middle);
        }
 
        return rdd->err;
@@ -277,7 +277,6 @@ static inline int ovl_dir_read_merged(struct path *upperpath,
                                      struct list_head *list)
 {
        int err;
-       struct list_head middle;
        struct ovl_readdir_data rdd = {
                .ctx.actor = ovl_fill_merge,
                .list = list,
@@ -301,11 +300,10 @@ static inline int ovl_dir_read_merged(struct path *upperpath,
                 * Insert lowerpath entries before upperpath ones, this allows
                 * offsets to be reasonably constant
                 */
-               list_add(&middle, rdd.list);
-               rdd.middle = &middle;
+               list_add(&rdd.middle, rdd.list);
                rdd.is_merge = true;
                err = ovl_dir_read(lowerpath, &rdd);
-               list_del(&middle);
+               list_del(&rdd.middle);
        }
 out:
        return err;