From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Fri, 16 Dec 2016 22:39:58 +0000 (-0500)
Subject: NFS: Don't revalidate the file on close if we hold a delegation
X-Git-Tag: v4.14-rc1~1804^2~16
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=58ff41842c7b8b8a79752e3d040188ebddb95194;p=platform%2Fkernel%2Flinux-rpi.git

NFS: Don't revalidate the file on close if we hold a delegation

If we're holding a delegation, we can skip sending the close-to-open
GETATTR until we're returning that delegation.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 7de345f..2fc237c 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -795,6 +795,8 @@ void nfs_close_context(struct nfs_open_context *ctx, int is_sync)
 	if (!is_sync)
 		return;
 	inode = d_inode(ctx->dentry);
+	if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
+		return;
 	nfsi = NFS_I(inode);
 	if (inode->i_mapping->nrpages == 0)
 		return;