Commit 530f683d authored by Mike Snitzer's avatar Mike Snitzer
Browse files

dm bufio: move dm_bufio_client members to avoid spanning cachelines 



Movement also consolidates holes in dm_bufio_client struct. But the
overall size of the struct isn't changed.

Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
parent 79118806

drivers/md/dm-bufio.c

+13 −11
Original line number Diff line number Diff line
@@ -936,13 +936,16 @@ static void cache_remove_range(struct dm_buffer_cache *bc, 
 *	context.

 */

struct dm_bufio_client {

	struct mutex lock;

	spinlock_t spinlock;

	bool no_sleep;



	struct block_device *bdev;

	unsigned int block_size;

	s8 sectors_per_block_bits;



	bool no_sleep;

	struct mutex lock;

	spinlock_t spinlock;



	int async_write_error;



	void (*alloc_callback)(struct dm_buffer *buf);

	void (*write_callback)(struct dm_buffer *buf);

	struct kmem_cache *slab_buffer;
@@ -954,23 +957,22 @@ struct dm_bufio_client { 


	unsigned int minimum_buffers;



	struct dm_buffer_cache cache;

	wait_queue_head_t free_buffer_wait;



	sector_t start;



	int async_write_error;



	struct list_head client_list;



	struct shrinker shrinker;

	struct work_struct shrink_work;

	atomic_long_t need_shrink;



	wait_queue_head_t free_buffer_wait;



	struct list_head client_list;



	/*

	 * Used by global_cleanup to sort the clients list.

	 */

	unsigned long oldest_buffer;



	struct dm_buffer_cache cache;

};



static DEFINE_STATIC_KEY_FALSE(no_sleep_enabled);