3 files changed, 16 insertions, 3 deletions

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 0be47e4b8136..b57daa895cea 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1689,7 +1689,7 @@ int btrfs_should_delete_dir_index(struct list_head *del_list,
  *
  */
 int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,
-                                    struct list_head *ins_list)
+                                    struct list_head *ins_list, bool *emitted)
 {
         struct btrfs_dir_item *di;
         struct btrfs_delayed_item *curr, *next;
@@ -1733,6 +1733,7 @@ int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,
 
                 if (over)
                         return 1;
+                *emitted = true;
         }
         return 0;
 }
diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h
index f70119f25421..0167853c84ae 100644
--- a/fs/btrfs/delayed-inode.h
+++ b/fs/btrfs/delayed-inode.h
@@ -144,7 +144,7 @@ void btrfs_put_delayed_items(struct list_head *ins_list,
 int btrfs_should_delete_dir_index(struct list_head *del_list,
                                   u64 index);
 int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,
-                                    struct list_head *ins_list);
+                                    struct list_head *ins_list, bool *emitted);
 
 /* for init */
 int __init btrfs_delayed_inode_init(void);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e4565456eb01..600bf0d9ceaf 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5716,6 +5716,7 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx)
         char *name_ptr;
         int name_len;
         int is_curr = 0;        /* ctx->pos points to the current index? */
+        bool emitted;
 
         /* FIXME, use a real flag for deciding about the key type */
         if (root->fs_info->tree_root == root)
@@ -5744,6 +5745,7 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx)
         if (ret < 0)
                 goto err;
 
+        emitted = false;
         while (1) {
                 leaf = path->nodes[0];
                 slot = path->slots[0];
@@ -5823,6 +5825,7 @@ skip:
 
                         if (over)
                                 goto nopos;
+                        emitted = true;
                         di_len = btrfs_dir_name_len(leaf, di) +
                                  btrfs_dir_data_len(leaf, di) + sizeof(*di);
                         di_cur += di_len;
@@ -5835,11 +5838,20 @@ next:
         if (key_type == BTRFS_DIR_INDEX_KEY) {
                 if (is_curr)
                         ctx->pos++;
-                ret = btrfs_readdir_delayed_dir_index(ctx, &ins_list);
+                ret = btrfs_readdir_delayed_dir_index(ctx, &ins_list, &emitted);
                 if (ret)
                         goto nopos;
         }
 
+        /*
+         * If we haven't emitted any dir entry, we must not touch ctx->pos as
+         * it was was set to the termination value in previous call. We assume
+         * that "." and ".." were emitted if we reach this point and set the
+         * termination value as well for an empty directory.
+         */
+        if (ctx->pos > 2 && !emitted)
+                goto nopos;
+
         /* Reached end of directory/root. Bump pos past the last item. */
         ctx->pos++;