From 3235b40303b6f609c446275d0e7f6f9f4fe94156 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 26 Feb 2015 19:52:06 -0500 Subject: [PATCH] NFSv4: Set a barrier in the update_changeattr() helper Ensure that we don't regress the changes that were made to the directory. Signed-off-by: Trond Myklebust Tested-by: Chuck Lever --- fs/nfs/inode.c | 1 + fs/nfs/nfs4proc.c | 1 + 2 files changed, 2 insertions(+) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index c66c1df..5026c44 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1249,6 +1249,7 @@ unsigned long nfs_inc_attr_generation_counter(void) { return atomic_long_inc_return(&nfs_attr_generation_counter); } +EXPORT_SYMBOL_GPL(nfs_inc_attr_generation_counter); void nfs_fattr_init(struct nfs_fattr *fattr) { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b022e64..a211daf 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -901,6 +901,7 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) if (!cinfo->atomic || cinfo->before != dir->i_version) nfs_force_lookup_revalidate(dir); dir->i_version = cinfo->after; + nfsi->attr_gencount = nfs_inc_attr_generation_counter(); nfs_fscache_invalidate(dir); spin_unlock(&dir->i_lock); } -- 2.7.4