From 6feef531f55cf4a20fd9eb39f5352e5745203603 Mon Sep 17 00:00:00 2001 From: Denis ChengRq Date: Thu, 9 Oct 2008 08:57:05 +0200 Subject: [PATCH] block: mark bio_split_pool static 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 Signed-off-by: Jens Axboe --- drivers/block/pktcdvd.c | 2 +- drivers/md/linear.c | 2 +- drivers/md/raid0.c | 2 +- drivers/md/raid10.c | 2 +- fs/bio.c | 9 ++++----- include/linux/bio.h | 4 +--- 6 files changed, 9 insertions(+), 12 deletions(-) diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index e1a90bbb4747..0e077150568b 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -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); diff --git a/drivers/md/linear.c b/drivers/md/linear.c index c80ea90593d3..b9cbee688fae 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -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); diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index f52f442a735f..53508a8a981d 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -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)) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 5f990133f5ef..8bdc9bfc2887 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -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); diff --git a/fs/bio.c b/fs/bio.c index a5af5809f566..77a55bcceedb 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -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); diff --git a/include/linux/bio.h b/include/linux/bio.h index fe12d0f9ebaa..fb97221d7c30 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -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); -- 2.20.1