From 55acc6618259c8ff0a400a131f0f4b613e96010a Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 4 Jul 2017 22:03:18 +0200 Subject: ovl: add flag for upper in ovl_entry For rename, we need to ensure that an upper alias exists for hard links before attempting the operation. Introduce a flag in ovl_entry to track the state of the upper alias. Signed-off-by: Miklos Szeredi --- fs/overlayfs/namei.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'fs/overlayfs/namei.c') diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index f7fb0c919419..2d8b6292fe21 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -674,7 +674,9 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, memcpy(oe->lowerstack, stack, sizeof(struct path) * ctr); dentry->d_fsdata = oe; - if (index && !upperdentry) + if (upperdentry) + ovl_dentry_set_upper_alias(dentry); + else if (index) upperdentry = dget(index); if (upperdentry || ctr) { -- cgit v1.2.3-59-g8ed1b