[PATCH] nfs_updatepage must not extend the write

[Jiang Guiqing <jianggq@cn.fujitsu.com>]

hi,all

I think, when mounting nfs with sync option, nfs_updatepage must not
extend the write to cover the entire page.

Signed-off-by: Jiang Guiqing <jianggq@cn.fujitsu.com>

---
  linux-2.6.25-rc4/fs/nfs/write.c |    3 ++-
  1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/linux-2.6.25-rc4/fs/nfs/write.c b/linux-2.6.25-rc4/fs/nfs/write.c
index 80c61fd..94d6aaf 100644
--- a/linux-2.6.25-rc4/fs/nfs/write.c
+++ b/linux-2.6.25-rc4/fs/nfs/write.c
@@ -734,7 +734,8 @@ int nfs_updatepage(struct file *file, struct page *page,
  	 */
  	if (nfs_write_pageuptodate(page, inode) &&
  			inode->i_flock == NULL &&
-			!(file->f_flags & O_SYNC)) {
+			!(file->f_flags & O_SYNC) &&
+			!(IS_SYNC(inode))) {
  		count = max(count + offset, nfs_page_length(page));
  		offset = 0;
  	}
-- 
1.5.3.8

Thanks.
-Jiang Guiqing