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Commit 0892fac8 authored by Kent Overstreet's avatar Kent Overstreet Committed by Jens Axboe
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drbd: convert to bioset_init()/mempool_init() 



Convert drbd to embedded bio sets and mempools.

Signed-off-by: default avatarKent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 338aa96d

drivers/block/drbd/drbd_bitmap.c

+2 −2
Original line number Diff line number Diff line
@@ -977,7 +977,7 @@ static void drbd_bm_endio(struct bio *bio) 
	bm_page_unlock_io(device, idx);



	if (ctx->flags & BM_AIO_COPY_PAGES)

		mempool_free(bio->bi_io_vec[0].bv_page, drbd_md_io_page_pool);

		mempool_free(bio->bi_io_vec[0].bv_page, &drbd_md_io_page_pool);



	bio_put(bio);
@@ -1014,7 +1014,7 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho 
	bm_set_page_unchanged(b->bm_pages[page_nr]);



	if (ctx->flags & BM_AIO_COPY_PAGES) {

		page = mempool_alloc(drbd_md_io_page_pool,

		page = mempool_alloc(&drbd_md_io_page_pool,

				GFP_NOIO | __GFP_HIGHMEM);

		copy_highpage(page, b->bm_pages[page_nr]);

		bm_store_page_idx(page, page_nr);

drivers/block/drbd/drbd_int.h

+5 −5
Original line number Diff line number Diff line
@@ -1405,8 +1405,8 @@ extern struct kmem_cache *drbd_request_cache; 
extern struct kmem_cache *drbd_ee_cache;	/* peer requests */

extern struct kmem_cache *drbd_bm_ext_cache;	/* bitmap extents */

extern struct kmem_cache *drbd_al_ext_cache;	/* activity log extents */

extern mempool_t *drbd_request_mempool;

extern mempool_t *drbd_ee_mempool;

extern mempool_t drbd_request_mempool;

extern mempool_t drbd_ee_mempool;



/* drbd's page pool, used to buffer data received from the peer,

 * or data requested by the peer.
@@ -1432,16 +1432,16 @@ extern wait_queue_head_t drbd_pp_wait; 
 * 128 should be plenty, currently we probably can get away with as few as 1.

 */

#define DRBD_MIN_POOL_PAGES	128

extern mempool_t *drbd_md_io_page_pool;

extern mempool_t drbd_md_io_page_pool;



/* We also need to make sure we get a bio

 * when we need it for housekeeping purposes */

extern struct bio_set *drbd_md_io_bio_set;

extern struct bio_set drbd_md_io_bio_set;

/* to allocate from that set */

extern struct bio *bio_alloc_drbd(gfp_t gfp_mask);



/* And a bio_set for cloning */

extern struct bio_set *drbd_io_bio_set;

extern struct bio_set drbd_io_bio_set;



extern struct mutex resources_mutex;

drivers/block/drbd/drbd_main.c

+25 −46
Original line number Diff line number Diff line
@@ -124,11 +124,11 @@ struct kmem_cache *drbd_request_cache; 
struct kmem_cache *drbd_ee_cache;	/* peer requests */

struct kmem_cache *drbd_bm_ext_cache;	/* bitmap extents */

struct kmem_cache *drbd_al_ext_cache;	/* activity log extents */

mempool_t *drbd_request_mempool;

mempool_t *drbd_ee_mempool;

mempool_t *drbd_md_io_page_pool;

struct bio_set *drbd_md_io_bio_set;

struct bio_set *drbd_io_bio_set;

mempool_t drbd_request_mempool;

mempool_t drbd_ee_mempool;

mempool_t drbd_md_io_page_pool;

struct bio_set drbd_md_io_bio_set;

struct bio_set drbd_io_bio_set;



/* I do not use a standard mempool, because:

   1) I want to hand out the pre-allocated objects first.
@@ -153,10 +153,10 @@ struct bio *bio_alloc_drbd(gfp_t gfp_mask) 
{

	struct bio *bio;



	if (!drbd_md_io_bio_set)

	if (!bioset_initialized(&drbd_md_io_bio_set))

		return bio_alloc(gfp_mask, 1);



	bio = bio_alloc_bioset(gfp_mask, 1, drbd_md_io_bio_set);

	bio = bio_alloc_bioset(gfp_mask, 1, &drbd_md_io_bio_set);

	if (!bio)

		return NULL;

	return bio;
@@ -2097,16 +2097,11 @@ static void drbd_destroy_mempools(void) 


	/* D_ASSERT(device, atomic_read(&drbd_pp_vacant)==0); */



	if (drbd_io_bio_set)

		bioset_free(drbd_io_bio_set);

	if (drbd_md_io_bio_set)

		bioset_free(drbd_md_io_bio_set);

	if (drbd_md_io_page_pool)

		mempool_destroy(drbd_md_io_page_pool);

	if (drbd_ee_mempool)

		mempool_destroy(drbd_ee_mempool);

	if (drbd_request_mempool)

		mempool_destroy(drbd_request_mempool);

	bioset_exit(&drbd_io_bio_set);

	bioset_exit(&drbd_md_io_bio_set);

	mempool_exit(&drbd_md_io_page_pool);

	mempool_exit(&drbd_ee_mempool);

	mempool_exit(&drbd_request_mempool);

	if (drbd_ee_cache)

		kmem_cache_destroy(drbd_ee_cache);

	if (drbd_request_cache)
@@ -2116,11 +2111,6 @@ static void drbd_destroy_mempools(void) 
	if (drbd_al_ext_cache)

		kmem_cache_destroy(drbd_al_ext_cache);



	drbd_io_bio_set      = NULL;

	drbd_md_io_bio_set   = NULL;

	drbd_md_io_page_pool = NULL;

	drbd_ee_mempool      = NULL;

	drbd_request_mempool = NULL;

	drbd_ee_cache        = NULL;

	drbd_request_cache   = NULL;

	drbd_bm_ext_cache    = NULL;
@@ -2133,18 +2123,7 @@ static int drbd_create_mempools(void) 
{

	struct page *page;

	const int number = (DRBD_MAX_BIO_SIZE/PAGE_SIZE) * drbd_minor_count;

	int i;



	/* prepare our caches and mempools */

	drbd_request_mempool = NULL;

	drbd_ee_cache        = NULL;

	drbd_request_cache   = NULL;

	drbd_bm_ext_cache    = NULL;

	drbd_al_ext_cache    = NULL;

	drbd_pp_pool         = NULL;

	drbd_md_io_page_pool = NULL;

	drbd_md_io_bio_set   = NULL;

	drbd_io_bio_set      = NULL;

	int i, ret;



	/* caches */

	drbd_request_cache = kmem_cache_create(
@@ -2168,26 +2147,26 @@ static int drbd_create_mempools(void) 
		goto Enomem;



	/* mempools */

	drbd_io_bio_set = bioset_create(BIO_POOL_SIZE, 0, 0);

	if (drbd_io_bio_set == NULL)

	ret = bioset_init(&drbd_io_bio_set, BIO_POOL_SIZE, 0, 0);

	if (ret)

		goto Enomem;



	drbd_md_io_bio_set = bioset_create(DRBD_MIN_POOL_PAGES, 0,

	ret = bioset_init(&drbd_md_io_bio_set, DRBD_MIN_POOL_PAGES, 0,

			  BIOSET_NEED_BVECS);

	if (drbd_md_io_bio_set == NULL)

	if (ret)

		goto Enomem;



	drbd_md_io_page_pool = mempool_create_page_pool(DRBD_MIN_POOL_PAGES, 0);

	if (drbd_md_io_page_pool == NULL)

	ret = mempool_init_page_pool(&drbd_md_io_page_pool, DRBD_MIN_POOL_PAGES, 0);

	if (ret)

		goto Enomem;



	drbd_request_mempool = mempool_create_slab_pool(number,

	ret = mempool_init_slab_pool(&drbd_request_mempool, number,

				     drbd_request_cache);

	if (drbd_request_mempool == NULL)

	if (ret)

		goto Enomem;



	drbd_ee_mempool = mempool_create_slab_pool(number, drbd_ee_cache);

	if (drbd_ee_mempool == NULL)

	ret = mempool_init_slab_pool(&drbd_ee_mempool, number, drbd_ee_cache);

	if (ret)

		goto Enomem;



	/* drbd's page pool */

drivers/block/drbd/drbd_receiver.c

+3 −3
Original line number Diff line number Diff line
@@ -378,7 +378,7 @@ drbd_alloc_peer_req(struct drbd_peer_device *peer_device, u64 id, sector_t secto 
	if (drbd_insert_fault(device, DRBD_FAULT_AL_EE))

		return NULL;



	peer_req = mempool_alloc(drbd_ee_mempool, gfp_mask & ~__GFP_HIGHMEM);

	peer_req = mempool_alloc(&drbd_ee_mempool, gfp_mask & ~__GFP_HIGHMEM);

	if (!peer_req) {

		if (!(gfp_mask & __GFP_NOWARN))

			drbd_err(device, "%s: allocation failed\n", __func__);
@@ -409,7 +409,7 @@ drbd_alloc_peer_req(struct drbd_peer_device *peer_device, u64 id, sector_t secto 
	return peer_req;



 fail:

	mempool_free(peer_req, drbd_ee_mempool);

	mempool_free(peer_req, &drbd_ee_mempool);

	return NULL;

}
@@ -426,7 +426,7 @@ void __drbd_free_peer_req(struct drbd_device *device, struct drbd_peer_request * 
		peer_req->flags &= ~EE_CALL_AL_COMPLETE_IO;

		drbd_al_complete_io(device, &peer_req->i);

	}

	mempool_free(peer_req, drbd_ee_mempool);

	mempool_free(peer_req, &drbd_ee_mempool);

}



int drbd_free_peer_reqs(struct drbd_device *device, struct list_head *list)

drivers/block/drbd/drbd_req.c

+2 −2
Original line number Diff line number Diff line
@@ -55,7 +55,7 @@ static struct drbd_request *drbd_req_new(struct drbd_device *device, struct bio 
{

	struct drbd_request *req;



	req = mempool_alloc(drbd_request_mempool, GFP_NOIO);

	req = mempool_alloc(&drbd_request_mempool, GFP_NOIO);

	if (!req)

		return NULL;

	memset(req, 0, sizeof(*req));
@@ -184,7 +184,7 @@ void drbd_req_destroy(struct kref *kref) 
		}

	}



	mempool_free(req, drbd_request_mempool);

	mempool_free(req, &drbd_request_mempool);

}



static void wake_all_senders(struct drbd_connection *connection)