Patch "nfs: remove WARN_ON_ONCE from nfs_direct_good_bytes" has been added to the 4.0-stable tree

Patch "nfs: remove WARN_ON_ONCE from nfs_direct_good_bytes" has been added to the 4.0-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    nfs: remove WARN_ON_ONCE from nfs_direct_good_bytes

to the 4.0-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     nfs-remove-warn_on_once-from-nfs_direct_good_bytes.patch
and it can be found in the queue-4.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 05f54903d9d370a4cd302a85681304d3ec59e5c1 Mon Sep 17 00:00:00 2001
From: Peng Tao <tao.peng@primarydata.com>
Date: Thu, 9 Apr 2015 23:02:17 +0800
Subject: nfs: remove WARN_ON_ONCE from nfs_direct_good_bytes

From: Peng Tao <tao.peng@primarydata.com>

commit 05f54903d9d370a4cd302a85681304d3ec59e5c1 upstream.

For flexfiles driver, we might choose to read from mirror index other
than 0 while mirror_count is always 1 for read.

Reported-by: Jean Spector <jean@primarydata.com>
Cc: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/nfs/direct.c |    2 --
 1 file changed, 2 deletions(-)

--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -129,8 +129,6 @@ nfs_direct_good_bytes(struct nfs_direct_
 	int i;
 	ssize_t count;
 
-	WARN_ON_ONCE(hdr->pgio_mirror_idx >= dreq->mirror_count);
-
 	if (dreq->mirror_count == 1) {
 		dreq->mirrors[hdr->pgio_mirror_idx].count += hdr->good_bytes;
 		dreq->count += hdr->good_bytes;


Patches currently in stable-queue which might be from tao.peng@primarydata.com are

queue-4.0/nfs-fix-dio-good-bytes-calculation.patch
queue-4.0/nfs-remove-warn_on_once-from-nfs_direct_good_bytes.patch