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dm: reorder members in mapped_device struct

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Improves alignment and groups related members relative to cachelines.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer 2022-02-17 23:40:04 -05:00
parent 0ab30b4079
commit 205649d84c
1 changed files with 19 additions and 19 deletions
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38
drivers/md/dm-core.h
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@ -64,13 +64,21 @@ struct mapped_device {
struct gendisk *disk;
struct dax_device *dax_dev;
wait_queue_head_t wait;
unsigned long __percpu *pending_io;
/* forced geometry settings */
struct hd_geometry geometry;
/*
* Processing queue (flush)
*/
struct workqueue_struct *wq;
/*
* A list of ios that arrived while we were suspended.
*/
struct work_struct work;
wait_queue_head_t wait;
spinlock_t deferred_lock;
struct bio_list deferred;
@ -85,36 +93,28 @@ struct mapped_device {
struct list_head uevent_list;
spinlock_t uevent_lock; /* Protect access to uevent_list */
/* for blk-mq request-based DM support */
bool init_tio_pdu:1;
struct blk_mq_tag_set *tag_set;
struct dm_stats stats;
/* the number of internal suspends */
unsigned internal_suspend_count;
int swap_bios;
struct semaphore swap_bios_semaphore;
struct mutex swap_bios_lock;
/*
* io objects are allocated from here.
*/
struct bio_set io_bs;
struct bio_set bs;
/*
* Processing queue (flush)
*/
struct workqueue_struct *wq;
/* forced geometry settings */
struct hd_geometry geometry;
/* kobject and completion */
struct dm_kobject_holder kobj_holder;
int swap_bios;
struct semaphore swap_bios_semaphore;
struct mutex swap_bios_lock;
struct dm_stats stats;
/* for blk-mq request-based DM support */
struct blk_mq_tag_set *tag_set;
bool init_tio_pdu:1;
struct srcu_struct io_barrier;
#ifdef CONFIG_BLK_DEV_ZONED