This is a note to let you know that I've just added the patch titled
raid10: increment write counter after bio is split
to the 4.4-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:
raid10-increment-write-counter-after-bio-is-split.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9b622e2bbcf049c82e2550d35fb54ac205965f50 Mon Sep 17 00:00:00 2001
From: Tomasz Majchrzak <tomasz.majchrzak@xxxxxxxxx>
Date: Thu, 28 Jul 2016 10:28:25 +0200
Subject: raid10: increment write counter after bio is split
From: Tomasz Majchrzak <tomasz.majchrzak@xxxxxxxxx>
commit 9b622e2bbcf049c82e2550d35fb54ac205965f50 upstream.
md pending write counter must be incremented after bio is split,
otherwise it gets decremented too many times in end bio callback and
becomes negative.
Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@xxxxxxxxx>
Reviewed-by: Artur Paszkiewicz <artur.paszkiewicz@xxxxxxxxx>
Signed-off-by: Shaohua Li <shli@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/raid10.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1072,6 +1072,8 @@ static void __make_request(struct mddev
int max_sectors;
int sectors;
+ md_write_start(mddev, bio);
+
/*
* Register the new request and wait if the reconstruction
* thread has put up a bar for new requests.
@@ -1455,8 +1457,6 @@ static void make_request(struct mddev *m
return;
}
- md_write_start(mddev, bio);
-
do {
/*
Patches currently in stable-queue which might be from tomasz.majchrzak@xxxxxxxxx are
queue-4.4/raid10-increment-write-counter-after-bio-is-split.patch