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>
---
 block/blk-integrity.c | 1 +
 block/blk-sysfs.c     | 1 +
 block/bounce.c        | 1 +
 block/genhd.c         | 1 +
 4 files changed, 4 insertions(+)

(limited to 'block')

diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index 79ffb4855af0..f548b64be092 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -21,6 +21,7 @@
  */
 
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/mempool.h>
 #include <linux/bio.h>
 #include <linux/scatterlist.h>
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 5677eb78557d..1b60941dc4c6 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -6,6 +6,7 @@
 #include <linux/module.h>
 #include <linux/bio.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/blktrace_api.h>
 #include <linux/blk-mq.h>
 #include <linux/blk-cgroup.h>
diff --git a/block/bounce.c b/block/bounce.c
index 4bac72579c1f..072280b3dd13 100644
--- a/block/bounce.c
+++ b/block/bounce.c
@@ -13,6 +13,7 @@
 #include <linux/pagemap.h>
 #include <linux/mempool.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/init.h>
 #include <linux/hash.h>
 #include <linux/highmem.h>
diff --git a/block/genhd.c b/block/genhd.c
index 0a536dc05f3b..d46ba566d62f 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -8,6 +8,7 @@
 #include <linux/kdev_t.h>
 #include <linux/kernel.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <linux/proc_fs.h>
-- 
cgit v1.2.3