From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Sat, 31 Jul 2010 18:29:06 +0000 (-0400)
Subject: NFS: nfs_rename() should not have to flush out writebacks
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=0a8ebba943dd89bdd57c5dab5a66932f690847d9;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

NFS: nfs_rename() should not have to flush out writebacks

We don't really support nfs servers that invalidate the file handle after a
rename, so precautions such as flushing out dirty data before renaming the
file are superfluous.

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

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 782b431ef91c..067a051397ba 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1652,16 +1652,7 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		}
 	}
 
-	/*
-	 * ... prune child dentries and writebacks if needed.
-	 */
-	if (atomic_read(&old_dentry->d_count) > 1) {
-		if (S_ISREG(old_inode->i_mode))
-			nfs_wb_all(old_inode);
-		shrink_dcache_parent(old_dentry);
-	}
 	nfs_inode_return_delegation(old_inode);
-
 	if (new_inode != NULL)
 		nfs_inode_return_delegation(new_inode);