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block: mark bio_split_pool static

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Since all bio_split calls refer the same single bio_split_pool, the bio_split
function can use bio_split_pool directly instead of the mempool_t parameter;

then the mempool_t parameter can be removed from bio_split param list, and
bio_split_pool is only referred in fs/bio.c file, can be marked static.

Signed-off-by: Denis ChengRq <crquan@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Denis ChengRq 2008-10-09 08:57:05 +02:00 committed by Jens Axboe
parent ad3316bf4e
commit 6feef531f5
6 changed files with 9 additions and 12 deletions
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2
drivers/block/pktcdvd.c
View file

@ -2544,7 +2544,7 @@ static int pkt_make_request(struct request_queue *q, struct bio *bio)
if (last_zone != zone) {
BUG_ON(last_zone != zone + pd->settings.size);
first_sectors = last_zone - bio->bi_sector;
bp = bio_split(bio, bio_split_pool, first_sectors);
bp = bio_split(bio, first_sectors);
BUG_ON(!bp);
pkt_make_request(q, &bp->bio1);
pkt_make_request(q, &bp->bio2);

2
drivers/md/linear.c
View file

@ -353,7 +353,7 @@ static int linear_make_request (struct request_queue *q, struct bio *bio)
* split it.
*/
struct bio_pair *bp;
bp = bio_split(bio, bio_split_pool,
bp = bio_split(bio,
((tmp_dev->offset + tmp_dev->size)<<1) - bio->bi_sector);
if (linear_make_request(q, &bp->bio1))
generic_make_request(&bp->bio1);

2
drivers/md/raid0.c
View file

@ -427,7 +427,7 @@ static int raid0_make_request (struct request_queue *q, struct bio *bio)
/* This is a one page bio that upper layers
* refuse to split for us, so we need to split it.
*/
bp = bio_split(bio, bio_split_pool, chunk_sects - (bio->bi_sector & (chunk_sects - 1)) );
bp = bio_split(bio, chunk_sects - (bio->bi_sector & (chunk_sects - 1)));
if (raid0_make_request(q, &bp->bio1))
generic_make_request(&bp->bio1);
if (raid0_make_request(q, &bp->bio2))

2
drivers/md/raid10.c
View file

@ -817,7 +817,7 @@ static int make_request(struct request_queue *q, struct bio * bio)
/* This is a one page bio that upper layers
* refuse to split for us, so we need to split it.
*/
bp = bio_split(bio, bio_split_pool,
bp = bio_split(bio,
chunk_sects - (bio->bi_sector & (chunk_sects - 1)) );
if (make_request(q, &bp->bio1))
generic_make_request(&bp->bio1);

9
fs/bio.c
View file

@ -30,7 +30,7 @@
static struct kmem_cache *bio_slab __read_mostly;
mempool_t *bio_split_pool __read_mostly;
static mempool_t *bio_split_pool __read_mostly;
/*
* if you change this list, also change bvec_alloc or things will
@ -1256,9 +1256,9 @@ static void bio_pair_end_2(struct bio *bi, int err)
* split a bio - only worry about a bio with a single page
* in it's iovec
*/
struct bio_pair *bio_split(struct bio *bi, mempool_t *pool, int first_sectors)
struct bio_pair *bio_split(struct bio *bi, int first_sectors)
{
struct bio_pair *bp = mempool_alloc(pool, GFP_NOIO);
struct bio_pair *bp = mempool_alloc(bio_split_pool, GFP_NOIO);
if (!bp)
return bp;
@ -1292,7 +1292,7 @@ struct bio_pair *bio_split(struct bio *bi, mempool_t *pool, int first_sectors)
bp->bio2.bi_end_io = bio_pair_end_2;
bp->bio1.bi_private = bi;
bp->bio2.bi_private = pool;
bp->bio2.bi_private = bio_split_pool;
if (bio_integrity(bi))
bio_integrity_split(bi, bp, first_sectors);
@ -1455,7 +1455,6 @@ EXPORT_SYMBOL(bio_map_kern);
EXPORT_SYMBOL(bio_copy_kern);
EXPORT_SYMBOL(bio_pair_release);
EXPORT_SYMBOL(bio_split);
EXPORT_SYMBOL(bio_split_pool);
EXPORT_SYMBOL(bio_copy_user);
EXPORT_SYMBOL(bio_uncopy_user);
EXPORT_SYMBOL(bioset_create);

4
include/linux/bio.h
View file

@ -300,9 +300,7 @@ struct bio_pair {
atomic_t cnt;
int error;
};
extern struct bio_pair *bio_split(struct bio *bi, mempool_t *pool,
int first_sectors);
extern mempool_t *bio_split_pool;
extern struct bio_pair *bio_split(struct bio *bi, int first_sectors);
extern void bio_pair_release(struct bio_pair *dbio);
extern struct bio_set *bioset_create(int, int);