From: Josef Bacik <jbacik@fb.com>
Date: Mon, 24 Jul 2017 19:14:26 +0000 (-0400)
Subject: btrfs: increase ctx->pos for delayed dir index
X-Git-Tag: v4.14-rc1~80^2~36
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=42e9cc46fbe86f83278c14f5d88f353d037258d2;p=thirdparty%2Fkernel%2Flinux.git

btrfs: increase ctx->pos for delayed dir index

Our dir_context->pos is supposed to hold the next position we're
supposed to look.  If we successfully insert a delayed dir index we
could end up with a duplicate entry because we don't increase ctx->pos
after doing the dir_emit.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 8ae409b5a61d7..19e4ad2f3f2e4 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1727,6 +1727,7 @@ int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,
 
 		if (over)
 			return 1;
+		ctx->pos++;
 	}
 	return 0;
 }