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authorSergey Senozhatsky <sergey.senozhatsky@gmail.com>2015-02-12 15:00:48 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-12 18:54:12 -0800
commitee98016010ae036a5b27300d83bd99ef3fd5776e (patch)
treebaddea4a5c526ff632ebdf7eaed106cb25d5596b
parent08eee69fcf6baea543a2b4d2a2fcba0e61aa3160 (diff)
downloadlinux-ee98016010ae036a5b27300d83bd99ef3fd5776e.tar.bz2
zram: remove request_queue from struct zram
`struct zram' contains both `struct gendisk' and `struct request_queue'. the latter can be deleted, because zram->disk carries ->queue pointer, and ->queue carries zram pointer: create_device() zram->queue->queuedata = zram zram->disk->queue = zram->queue zram->disk->private_data = zram so zram->queue is not needed, we can access all necessary data anyway. Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Jerome Marchand <jmarchan@redhat.com> Cc: Nitin Gupta <ngupta@vflare.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/block/zram/zram_drv.c16
-rw-r--r--drivers/block/zram/zram_drv.h1
2 files changed, 8 insertions, 9 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index db94572b35c4..eca4b67274c1 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1061,19 +1061,19 @@ static struct attribute_group zram_disk_attr_group = {
static int create_device(struct zram *zram, int device_id)
{
+ struct request_queue *queue;
int ret = -ENOMEM;
init_rwsem(&zram->init_lock);
- zram->queue = blk_alloc_queue(GFP_KERNEL);
- if (!zram->queue) {
+ queue = blk_alloc_queue(GFP_KERNEL);
+ if (!queue) {
pr_err("Error allocating disk queue for device %d\n",
device_id);
goto out;
}
- blk_queue_make_request(zram->queue, zram_make_request);
- zram->queue->queuedata = zram;
+ blk_queue_make_request(queue, zram_make_request);
/* gendisk structure */
zram->disk = alloc_disk(1);
@@ -1086,7 +1086,8 @@ static int create_device(struct zram *zram, int device_id)
zram->disk->major = zram_major;
zram->disk->first_minor = device_id;
zram->disk->fops = &zram_devops;
- zram->disk->queue = zram->queue;
+ zram->disk->queue = queue;
+ zram->disk->queue->queuedata = zram;
zram->disk->private_data = zram;
snprintf(zram->disk->disk_name, 16, "zram%d", device_id);
@@ -1137,7 +1138,7 @@ out_free_disk:
del_gendisk(zram->disk);
put_disk(zram->disk);
out_free_queue:
- blk_cleanup_queue(zram->queue);
+ blk_cleanup_queue(queue);
out:
return ret;
}
@@ -1158,10 +1159,9 @@ static void destroy_devices(unsigned int nr)
zram_reset_device(zram);
+ blk_cleanup_queue(zram->disk->queue);
del_gendisk(zram->disk);
put_disk(zram->disk);
-
- blk_cleanup_queue(zram->queue);
}
kfree(zram_devices);
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index 5249f51ccdb3..17056e589146 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -101,7 +101,6 @@ struct zram_meta {
struct zram {
struct zram_meta *meta;
struct zcomp *comp;
- struct request_queue *queue;
struct gendisk *disk;
/* Prevent concurrent execution of device init */
struct rw_semaphore init_lock;