From 9310b224f2ecc8bb075b86d753a2f359e3e1ac85 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 4 Dec 2016 18:08:40 -0500 Subject: [PATCH] NFS: Fix incorrect size revalidation when holding a delegation We should only care about checking the attributes if the page cache is marked as dubious (using NFS_INO_REVAL_PAGECACHE) and the NFS_INO_REVAL_FORCED flag is set. Signed-off-by: Trond Myklebust --- fs/nfs/file.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 9ea85ae23c32..64c11f399b3d 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -102,8 +102,11 @@ static int nfs_revalidate_file_size(struct inode *inode, struct file *filp) { struct nfs_server *server = NFS_SERVER(inode); struct nfs_inode *nfsi = NFS_I(inode); + const unsigned long force_reval = NFS_INO_REVAL_PAGECACHE|NFS_INO_REVAL_FORCED; + unsigned long cache_validity = nfsi->cache_validity; - if (nfs_have_delegated_attributes(inode)) + if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) && + (cache_validity & force_reval) != force_reval) goto out_noreval; if (filp->f_flags & O_DIRECT)