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Commit 084ec9ba authored by Javier González's avatar Javier González Committed by Jens Axboe
Browse files

lightnvm: pblk: rename read request pool 



Read requests allocate some extra memory to store its per I/O context.
Instead of requiring yet another memory pool for other type of requests,
generalize this context allocation (and change naming accordingly).

Signed-off-by: default avatarJavier González <javier@cnexlabs.com>
Signed-off-by: default avatarMatias Bjørling <matias@cnexlabs.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent d624f371

drivers/lightnvm/pblk-core.c

+6 −6
Original line number Diff line number Diff line
@@ -62,7 +62,7 @@ static void pblk_end_io_erase(struct nvm_rq *rqd) 
	struct pblk *pblk = rqd->private;



	__pblk_end_io_erase(pblk, rqd);

	mempool_free(rqd, pblk->r_rq_pool);

	mempool_free(rqd, pblk->g_rq_pool);

}



static void __pblk_map_invalidate(struct pblk *pblk, struct pblk_line *line,
@@ -171,8 +171,8 @@ struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int rw) 
		pool = pblk->w_rq_pool;

		rq_size = pblk_w_rq_size;

	} else {

		pool = pblk->r_rq_pool;

		rq_size = pblk_r_rq_size;

		pool = pblk->g_rq_pool;

		rq_size = pblk_g_rq_size;

	}



	rqd = mempool_alloc(pool, GFP_KERNEL);
@@ -188,7 +188,7 @@ void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int rw) 
	if (rw == WRITE)

		pool = pblk->w_rq_pool;

	else

		pool = pblk->r_rq_pool;

		pool = pblk->g_rq_pool;



	mempool_free(rqd, pool);

}
@@ -1343,8 +1343,8 @@ int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa) 
	struct nvm_rq *rqd;

	int err;



	rqd = mempool_alloc(pblk->r_rq_pool, GFP_KERNEL);

	memset(rqd, 0, pblk_r_rq_size);

	rqd = mempool_alloc(pblk->g_rq_pool, GFP_KERNEL);

	memset(rqd, 0, pblk_g_rq_size);



	pblk_setup_e_rq(pblk, rqd, ppa);

drivers/lightnvm/pblk-init.c

+13 −13
Original line number Diff line number Diff line
@@ -20,7 +20,7 @@ 


#include "pblk.h"



static struct kmem_cache *pblk_blk_ws_cache, *pblk_rec_cache, *pblk_r_rq_cache,

static struct kmem_cache *pblk_blk_ws_cache, *pblk_rec_cache, *pblk_g_rq_cache,

				*pblk_w_rq_cache, *pblk_line_meta_cache;

static DECLARE_RWSEM(pblk_lock);

struct bio_set *pblk_bio_set;
@@ -200,9 +200,9 @@ static int pblk_init_global_caches(struct pblk *pblk) 
		return -ENOMEM;

	}



	pblk_r_rq_cache = kmem_cache_create("pblk_r_rq", pblk_r_rq_size,

	pblk_g_rq_cache = kmem_cache_create("pblk_g_rq", pblk_g_rq_size,

				0, 0, NULL);

	if (!pblk_r_rq_cache) {

	if (!pblk_g_rq_cache) {

		kmem_cache_destroy(pblk_blk_ws_cache);

		kmem_cache_destroy(pblk_rec_cache);

		up_write(&pblk_lock);
@@ -214,7 +214,7 @@ static int pblk_init_global_caches(struct pblk *pblk) 
	if (!pblk_w_rq_cache) {

		kmem_cache_destroy(pblk_blk_ws_cache);

		kmem_cache_destroy(pblk_rec_cache);

		kmem_cache_destroy(pblk_r_rq_cache);

		kmem_cache_destroy(pblk_g_rq_cache);

		up_write(&pblk_lock);

		return -ENOMEM;

	}
@@ -226,7 +226,7 @@ static int pblk_init_global_caches(struct pblk *pblk) 
	if (!pblk_line_meta_cache) {

		kmem_cache_destroy(pblk_blk_ws_cache);

		kmem_cache_destroy(pblk_rec_cache);

		kmem_cache_destroy(pblk_r_rq_cache);

		kmem_cache_destroy(pblk_g_rq_cache);

		kmem_cache_destroy(pblk_w_rq_cache);

		up_write(&pblk_lock);

		return -ENOMEM;
@@ -279,13 +279,13 @@ static int pblk_core_init(struct pblk *pblk) 
	if (!pblk->rec_pool)

		goto free_blk_ws_pool;



	pblk->r_rq_pool = mempool_create_slab_pool(64, pblk_r_rq_cache);

	if (!pblk->r_rq_pool)

	pblk->g_rq_pool = mempool_create_slab_pool(64, pblk_g_rq_cache);

	if (!pblk->g_rq_pool)

		goto free_rec_pool;



	pblk->w_rq_pool = mempool_create_slab_pool(64, pblk_w_rq_cache);

	if (!pblk->w_rq_pool)

		goto free_r_rq_pool;

		goto free_g_rq_pool;



	pblk->line_meta_pool =

			mempool_create_slab_pool(16, pblk_line_meta_cache);
@@ -312,8 +312,8 @@ static int pblk_core_init(struct pblk *pblk) 
	mempool_destroy(pblk->line_meta_pool);

free_w_rq_pool:

	mempool_destroy(pblk->w_rq_pool);

free_r_rq_pool:

	mempool_destroy(pblk->r_rq_pool);

free_g_rq_pool:

	mempool_destroy(pblk->g_rq_pool);

free_rec_pool:

	mempool_destroy(pblk->rec_pool);

free_blk_ws_pool:
@@ -331,13 +331,13 @@ static void pblk_core_free(struct pblk *pblk) 
	mempool_destroy(pblk->page_pool);

	mempool_destroy(pblk->line_ws_pool);

	mempool_destroy(pblk->rec_pool);

	mempool_destroy(pblk->r_rq_pool);

	mempool_destroy(pblk->g_rq_pool);

	mempool_destroy(pblk->w_rq_pool);

	mempool_destroy(pblk->line_meta_pool);



	kmem_cache_destroy(pblk_blk_ws_cache);

	kmem_cache_destroy(pblk_rec_cache);

	kmem_cache_destroy(pblk_r_rq_cache);

	kmem_cache_destroy(pblk_g_rq_cache);

	kmem_cache_destroy(pblk_w_rq_cache);

	kmem_cache_destroy(pblk_line_meta_cache);

}

drivers/lightnvm/pblk-read.c

+9 −8
Original line number Diff line number Diff line
@@ -110,7 +110,7 @@ static void pblk_end_io_read(struct nvm_rq *rqd) 
{

	struct pblk *pblk = rqd->private;

	struct nvm_tgt_dev *dev = pblk->dev;

	struct pblk_r_ctx *r_ctx = nvm_rq_to_pdu(rqd);

	struct pblk_g_ctx *r_ctx = nvm_rq_to_pdu(rqd);

	struct bio *bio = rqd->bio;



	if (rqd->error)
@@ -124,13 +124,14 @@ static void pblk_end_io_read(struct nvm_rq *rqd) 
		nvm_dev_dma_free(dev->parent, rqd->ppa_list, rqd->dma_ppa_list);



	bio_put(bio);

	if (r_ctx->orig_bio) {

	if (r_ctx->private) {

		struct bio *orig_bio = r_ctx->private;



#ifdef CONFIG_NVM_DEBUG

		WARN_ONCE(r_ctx->orig_bio->bi_status,

						"pblk: corrupted read bio\n");

		WARN_ONCE(orig_bio->bi_status, "pblk: corrupted read bio\n");

#endif

		bio_endio(r_ctx->orig_bio);

		bio_put(r_ctx->orig_bio);

		bio_endio(orig_bio);

		bio_put(orig_bio);

	}



#ifdef CONFIG_NVM_DEBUG
@@ -345,7 +346,7 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio) 
	/* All sectors are to be read from the device */

	if (bitmap_empty(&read_bitmap, rqd->nr_ppas)) {

		struct bio *int_bio = NULL;

		struct pblk_r_ctx *r_ctx = nvm_rq_to_pdu(rqd);

		struct pblk_g_ctx *r_ctx = nvm_rq_to_pdu(rqd);



		/* Clone read bio to deal with read errors internally */

		int_bio = bio_clone_fast(bio, GFP_KERNEL, pblk_bio_set);
@@ -355,7 +356,7 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio) 
		}



		rqd->bio = int_bio;

		r_ctx->orig_bio = bio;

		r_ctx->private = bio;



		ret = pblk_submit_read_io(pblk, rqd);

		if (ret) {

drivers/lightnvm/pblk-recovery.c

+4 −4
Original line number Diff line number Diff line
@@ -240,7 +240,7 @@ static int pblk_recov_read_oob(struct pblk *pblk, struct pblk_line *line, 
	r_ptr_int = r_ptr;



next_read_rq:

	memset(rqd, 0, pblk_r_rq_size);

	memset(rqd, 0, pblk_g_rq_size);



	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);

	if (!rq_ppas)
@@ -361,7 +361,7 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line, 
	bio->bi_iter.bi_sector = 0; /* internal bio */

	bio_set_op_attrs(bio, REQ_OP_WRITE, 0);



	memset(rqd, 0, pblk_r_rq_size);

	memset(rqd, 0, pblk_g_rq_size);



	rqd->bio = bio;

	rqd->opcode = NVM_OP_PWRITE;
@@ -456,7 +456,7 @@ static int pblk_recov_scan_all_oob(struct pblk *pblk, struct pblk_line *line, 
	rec_round = 0;



next_rq:

	memset(rqd, 0, pblk_r_rq_size);

	memset(rqd, 0, pblk_g_rq_size);



	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);

	if (!rq_ppas)
@@ -591,7 +591,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line, 
	*done = 1;



next_rq:

	memset(rqd, 0, pblk_r_rq_size);

	memset(rqd, 0, pblk_g_rq_size);



	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);

	if (!rq_ppas)

drivers/lightnvm/pblk.h

+6 −6
Original line number Diff line number Diff line
@@ -91,7 +91,7 @@ struct pblk_sec_meta { 


#define pblk_dma_meta_size (sizeof(struct pblk_sec_meta) * PBLK_MAX_REQ_ADDRS)



/* write completion context */

/* write buffer completion context */

struct pblk_c_ctx {

	struct list_head list;		/* Head for out-of-order completion */
@@ -101,9 +101,9 @@ struct pblk_c_ctx { 
	unsigned int nr_padded;

};



/* Read context */

struct pblk_r_ctx {

	struct bio *orig_bio;

/* generic context */

struct pblk_g_ctx {

	void *private;

};



/* Recovery context */
@@ -543,7 +543,7 @@ struct pblk { 
	mempool_t *page_pool;

	mempool_t *line_ws_pool;

	mempool_t *rec_pool;

	mempool_t *r_rq_pool;

	mempool_t *g_rq_pool;

	mempool_t *w_rq_pool;

	mempool_t *line_meta_pool;
@@ -560,7 +560,7 @@ struct pblk_line_ws { 
	struct work_struct ws;

};



#define pblk_r_rq_size (sizeof(struct nvm_rq) + sizeof(struct pblk_r_ctx))

#define pblk_g_rq_size (sizeof(struct nvm_rq) + sizeof(struct pblk_g_ctx))

#define pblk_w_rq_size (sizeof(struct nvm_rq) + sizeof(struct pblk_c_ctx))



/*