From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Sun, 29 Apr 2012 16:30:19 +0000 (-0400)
Subject: NFS: Optimise away nfs_check_inode_attributes() when holding a delegation
X-Git-Tag: v3.5-rc1~52^2~99
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=01da47bde78ff2149f6546a0f17e25983aaddd7b;p=~emulex%2Finfiniband.git

NFS: Optimise away nfs_check_inode_attributes() when holding a delegation

We already know that the attribute cache is valid.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index fed27c0d1a4..81946e77647 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -955,6 +955,8 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
 	unsigned long invalid = 0;
 
 
+	if (nfs_have_delegated_attributes(inode))
+		return 0;
 	/* Has the inode gone and changed behind our back? */
 	if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid)
 		return -EIO;