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kernel/kernel-modules/drbd/centos/patches/0002-drbd-convert-to-bioset...

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From 29199315f91bcb65936543865761dc27e3635d42 Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kent.overstreet@gmail.com>
Date: Sun, 20 May 2018 18:25:48 -0400
Subject: [PATCH] drbd: convert to bioset_init()/mempool_init()
Convert drbd to embedded bio sets and mempools.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
---
drbd/drbd_bitmap.c | 4 +--
drbd/drbd_int.h | 10 ++++----
drbd/drbd_main.c | 70 +++++++++++++++++++---------------------------------
drbd/drbd_receiver.c | 6 ++---
drbd/drbd_req.c | 4 +--
drbd/drbd_req.h | 2 +-
6 files changed, 38 insertions(+), 58 deletions(-)
diff --git a/drbd/drbd_bitmap.c b/drbd/drbd_bitmap.c
index 7faee2b..5c1f176 100644
--- a/drbd/drbd_bitmap.c
+++ b/drbd/drbd_bitmap.c
@@ -990,7 +990,7 @@ static BIO_ENDIO_TYPE drbd_bm_endio BIO_ENDIO_ARGS(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);
@@ -1029,7 +1029,7 @@ 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, __GFP_HIGHMEM|__GFP_RECLAIM);
+ page = mempool_alloc(&drbd_md_io_page_pool, __GFP_HIGHMEM|__GFP_RECLAIM);
copy_highpage(page, b->bm_pages[page_nr]);
bm_store_page_idx(page, page_nr);
} else
diff --git a/drbd/drbd_int.h b/drbd/drbd_int.h
index 60382c4..77fce6d 100644
--- a/drbd/drbd_int.h
+++ b/drbd/drbd_int.h
@@ -1509,8 +1509,8 @@ 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.
@@ -1536,16 +1536,16 @@ 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;
diff --git a/drbd/drbd_main.c b/drbd/drbd_main.c
index dca68bc..4dd0bf1 100644
--- a/drbd/drbd_main.c
+++ b/drbd/drbd_main.c
@@ -141,11 +141,11 @@ 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.
@@ -188,10 +188,10 @@ 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;
@@ -2209,16 +2209,11 @@ 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)
@@ -2228,11 +2223,6 @@ 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;
@@ -2245,18 +2235,7 @@ 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(
@@ -2280,25 +2259,26 @@ 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,
- BIOSET_NEED_BVECS);
- if (drbd_md_io_bio_set == NULL)
+ ret = bioset_init(&drbd_md_io_bio_set, DRBD_MIN_POOL_PAGES, 0,
+ BIOSET_NEED_BVECS);
+ 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, drbd_request_cache);
- if (drbd_request_mempool == NULL)
+ ret = mempool_init_slab_pool(&drbd_request_mempool, number,
+ drbd_request_cache);
+ 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 */
diff --git a/drbd/drbd_receiver.c b/drbd/drbd_receiver.c
index b69e9a7..d7ba2a5 100644
--- a/drbd/drbd_receiver.c
+++ b/drbd/drbd_receiver.c
@@ -417,7 +417,7 @@ 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__);
@@ -447,7 +447,7 @@ 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;
}
@@ -464,7 +464,7 @@ 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)
diff --git a/drbd/drbd_req.c b/drbd/drbd_req.c
index b602cb3..221d6f6 100644
--- a/drbd/drbd_req.c
+++ b/drbd/drbd_req.c
@@ -73,7 +73,7 @@ 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));
@@ -202,7 +202,7 @@ 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) {
diff --git a/drbd/drbd_req.h b/drbd/drbd_req.h
index bd5935f..68e6469 100644
--- a/drbd/drbd_req.h
+++ b/drbd/drbd_req.h
@@ -271,7 +271,7 @@ enum drbd_req_state_bits {
static inline void drbd_req_make_private_bio(struct drbd_request *req, struct bio *bio_src)
{
struct bio *bio;
- bio = bio_clone_fast(bio_src, GFP_NOIO, drbd_io_bio_set);
+ bio = bio_clone_fast(bio_src, GFP_NOIO, &drbd_io_bio_set);
req->private_bio = bio;
--
2.7.4
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