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>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 7de345fd8e1e..2fc237cd338e 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;