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authorTejun Heo <tj@kernel.org>2015-05-22 17:13:32 -0400
committerJens Axboe <axboe@fb.com>2015-06-02 08:33:34 -0600
commit66114cad64bf76a155fec1f0fff0de771cf909d5 (patch)
tree58d7b8646add87cb40973961757a1c3598f3ee4c /block
parent4610007142823307d930ac890d822633a05ce08c (diff)
downloadlwn-66114cad64bf76a155fec1f0fff0de771cf909d5.tar.gz
lwn-66114cad64bf76a155fec1f0fff0de771cf909d5.zip
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>
Diffstat (limited to 'block')
-rw-r--r--block/blk-integrity.c1
-rw-r--r--block/blk-sysfs.c1
-rw-r--r--block/bounce.c1
-rw-r--r--block/genhd.c1
4 files changed, 4 insertions, 0 deletions
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>