NFS: Fix Oopsable condition in nfs_readpage_sync()

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

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 7a9ee00e0c61..f0aff824a291 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -204,9 +204,11 @@ static int nfs_readpage_sync(struct nfs_open_context *ctx, struct inode *inode,
         NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
         spin_unlock(&inode->i_lock);
 
-        nfs_readpage_truncate_uninitialised_page(rdata);
-        if (rdata->res.eof || rdata->res.count == rdata->args.count)
+        if (rdata->res.eof || rdata->res.count == rdata->args.count) {
                 SetPageUptodate(page);
+                if (rdata->res.eof && count != 0)
+                        memclear_highpage_flush(page, rdata->args.pgbase, count);
+        }
         result = 0;
 
 io_error: