From 66114cad64bf76a155fec1f0fff0de771cf909d5 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Fri, 22 May 2015 17:13:32 -0400
Subject: writeback: separate out include/linux/backing-dev-defs.h

With the planned cgroup writeback support, backing-dev related
declarations will be more widely used across block and cgroup;
unfortunately, including backing-dev.h from include/linux/blkdev.h
makes cyclic include dependency quite likely.

This patch separates out backing-dev-defs.h which only has the
essential definitions and updates blkdev.h to include it.  c files
which need access to more backing-dev details now include
backing-dev.h directly.  This takes backing-dev.h off the common
include dependency chain making it a lot easier to use it across block
and cgroup.

v2: fs/fat build failure fixed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
 drivers/block/drbd/drbd_int.h   | 1 +
 drivers/block/pktcdvd.c         | 1 +
 drivers/char/raw.c              | 1 +
 drivers/md/bcache/request.c     | 1 +
 drivers/md/dm.h                 | 1 +
 drivers/md/md.h                 | 1 +
 drivers/mtd/devices/block2mtd.c | 1 +
 7 files changed, 7 insertions(+)

(limited to 'drivers')

diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index b905e9888b88..efd19c2da9c2 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -38,6 +38,7 @@
 #include <linux/mutex.h>
 #include <linux/major.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/genhd.h>
 #include <linux/idr.h>
 #include <net/tcp.h>
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 09e628dafd9d..4c20c228184c 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -61,6 +61,7 @@
 #include <linux/freezer.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
+#include <linux/backing-dev.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_ioctl.h>
 #include <scsi/scsi.h>
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 5fc291c6157e..60316fbaf295 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -12,6 +12,7 @@
 #include <linux/fs.h>
 #include <linux/major.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/module.h>
 #include <linux/raw.h>
 #include <linux/capability.h>
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 1616f668a4cb..4afb2d26b148 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -15,6 +15,7 @@
 #include <linux/module.h>
 #include <linux/hash.h>
 #include <linux/random.h>
+#include <linux/backing-dev.h>
 
 #include <trace/events/bcache.h>
 
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index e6e66d087b26..7fff744f0865 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -14,6 +14,7 @@
 #include <linux/device-mapper.h>
 #include <linux/list.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/hdreg.h>
 #include <linux/completion.h>
 #include <linux/kobject.h>
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 4046a6c6f223..7da6e9c3cb53 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -16,6 +16,7 @@
 #define _MD_MD_H
 
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/kobject.h>
 #include <linux/list.h>
 #include <linux/mm.h>
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index b16f3cda97ff..e2c0057737e6 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -20,6 +20,7 @@
 #include <linux/delay.h>
 #include <linux/fs.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/bio.h>
 #include <linux/pagemap.h>
 #include <linux/list.h>
-- 
cgit