From fa0fd488acb946d830d0de478e13d157f682902a Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Tue, 28 Mar 2017 14:00:08 +0200
Subject: [PATCH] 3.18

---
 ...ent-write-counter-after-bio-is-split.patch | 42 +++++++++++++++++++
 queue-3.18/series                             |  1 +
 2 files changed, 43 insertions(+)
 create mode 100644 queue-3.18/raid10-increment-write-counter-after-bio-is-split.patch

diff --git a/queue-3.18/raid10-increment-write-counter-after-bio-is-split.patch b/queue-3.18/raid10-increment-write-counter-after-bio-is-split.patch
new file mode 100644
index 00000000000..d5faf242cd9
--- /dev/null
+++ b/queue-3.18/raid10-increment-write-counter-after-bio-is-split.patch
@@ -0,0 +1,42 @@
+From 9b622e2bbcf049c82e2550d35fb54ac205965f50 Mon Sep 17 00:00:00 2001
+From: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
+Date: Thu, 28 Jul 2016 10:28:25 +0200
+Subject: raid10: increment write counter after bio is split
+
+From: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
+
+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@intel.com>
+Reviewed-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
+Signed-off-by: Shaohua Li <shli@fb.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/md/raid10.c |    4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/md/raid10.c
++++ b/drivers/md/raid10.c
+@@ -1171,6 +1171,8 @@ 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.
+@@ -1556,8 +1558,6 @@ static void make_request(struct mddev *m
+ 		return;
+ 	}
+ 
+-	md_write_start(mddev, bio);
+-
+ 	do {
+ 
+ 		/*
diff --git a/queue-3.18/series b/queue-3.18/series
index 95b84b800a5..a803b1163ef 100644
--- a/queue-3.18/series
+++ b/queue-3.18/series
@@ -61,3 +61,4 @@ lib-vsprintf.c-improve-sanity-check-in-vsnprintf.patch
 tty-n_hdlc-fix-lockdep-false-positive.patch
 tty-n_hdlc-get-rid-of-racy-n_hdlc.tbuf.patch
 cancel-the-setfilesize-transation-when-io-error-happen.patch
+raid10-increment-write-counter-after-bio-is-split.patch
-- 
2.47.3