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Message-Id: <1498471049-25505-8-git-send-email-javier@cnexlabs.com>
Date: Mon, 26 Jun 2017 11:57:16 +0200
From: "Javier González" <jg@...htnvm.io>
To: mb@...htnvm.io, axboe@...com
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
Javier González <javier@...xlabs.com>,
Matias Bjørling <matias@...xlabs.com>
Subject: [PATCH 07/20] 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: Javier González <javier@...xlabs.com>
Signed-off-by: Matias Bjørling <matias@...xlabs.com>
---
drivers/lightnvm/pblk-core.c | 12 ++++++------
drivers/lightnvm/pblk-init.c | 24 ++++++++++++------------
drivers/lightnvm/pblk-read.c | 17 +++++++++--------
drivers/lightnvm/pblk-recovery.c | 8 ++++----
drivers/lightnvm/pblk.h | 12 ++++++------
5 files changed, 37 insertions(+), 36 deletions(-)
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index a1125547e638..6fa51eb9d681 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -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);
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index 5ea610957fb3..51dd42c7e852 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -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);
@@ -199,9 +199,9 @@ 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);
@@ -213,7 +213,7 @@ 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;
}
@@ -225,7 +225,7 @@ 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;
@@ -278,13 +278,13 @@ 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);
@@ -311,8 +311,8 @@ 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:
@@ -330,13 +330,13 @@ 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);
}
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
index 91307297e444..cea958e96fc3 100644
--- a/drivers/lightnvm/pblk-read.c
+++ b/drivers/lightnvm/pblk-read.c
@@ -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_bioset(bio, GFP_KERNEL, fs_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) {
diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index 82787006b865..84671b44bddb 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -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)
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index de0361988bfb..136cc2ed5b2f 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -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))
/*
--
2.7.4
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