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block: pass a block_device and opf to bio_alloc_bioset

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Pass the block_device and operation that we plan to use this bio for to
bio_alloc_bioset to optimize the assigment.  NULL/0 can be passed, both
for the passthrough case on a raw request_queue and to temporarily avoid
refactoring some nasty code.

Also move the gfp_mask argument after the nr_vecs argument for a much
more logical calling convention matching what most of the kernel does.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220124091107.642561-16-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-01-24 10:11:03 +01:00 committed by Jens Axboe
parent 0a3140ea0f
commit 609be10667
19 changed files with 75 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
block/bio.c
View File

@ -417,8 +417,10 @@ static void punt_bios_to_rescuer(struct bio_set *bs)
/**
* bio_alloc_bioset - allocate a bio for I/O
* @bdev: block device to allocate the bio for (can be %NULL)
* @nr_vecs: number of bvecs to pre-allocate
* @opf: operation and flags for bio
* @gfp_mask: the GFP_* mask given to the slab allocator
* @nr_iovecs: number of iovecs to pre-allocate
* @bs: the bio_set to allocate from.
*
* Allocate a bio from the mempools in @bs.
@ -447,15 +449,16 @@ static void punt_bios_to_rescuer(struct bio_set *bs)
*
* Returns: Pointer to new bio on success, NULL on failure.
*/
struct bio *bio_alloc_bioset(gfp_t gfp_mask, unsigned short nr_iovecs,
struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs,
unsigned int opf, gfp_t gfp_mask,
struct bio_set *bs)
{
gfp_t saved_gfp = gfp_mask;
struct bio *bio;
void *p;
/* should not use nobvec bioset for nr_iovecs > 0 */
if (WARN_ON_ONCE(!mempool_initialized(&bs->bvec_pool) && nr_iovecs > 0))
/* should not use nobvec bioset for nr_vecs > 0 */
if (WARN_ON_ONCE(!mempool_initialized(&bs->bvec_pool) && nr_vecs > 0))
return NULL;
/*
@ -492,26 +495,29 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, unsigned short nr_iovecs,
return NULL;
bio = p + bs->front_pad;
if (nr_iovecs > BIO_INLINE_VECS) {
if (nr_vecs > BIO_INLINE_VECS) {
struct bio_vec *bvl = NULL;
bvl = bvec_alloc(&bs->bvec_pool, &nr_iovecs, gfp_mask);
bvl = bvec_alloc(&bs->bvec_pool, &nr_vecs, gfp_mask);
if (!bvl && gfp_mask != saved_gfp) {
punt_bios_to_rescuer(bs);
gfp_mask = saved_gfp;
bvl = bvec_alloc(&bs->bvec_pool, &nr_iovecs, gfp_mask);
bvl = bvec_alloc(&bs->bvec_pool, &nr_vecs, gfp_mask);
}
if (unlikely(!bvl))
goto err_free;
bio_init(bio, bvl, nr_iovecs);
} else if (nr_iovecs) {
bio_init(bio, bvl, nr_vecs);
} else if (nr_vecs) {
bio_init(bio, bio->bi_inline_vecs, BIO_INLINE_VECS);
} else {
bio_init(bio, NULL, 0);
}
bio->bi_pool = bs;
if (bdev)
bio_set_dev(bio, bdev);
bio->bi_opf = opf;
return bio;
err_free:
@ -767,7 +773,7 @@ struct bio *bio_clone_fast(struct bio *bio, gfp_t gfp_mask, struct bio_set *bs)
{
struct bio *b;
b = bio_alloc_bioset(gfp_mask, 0, bs);
b = bio_alloc_bioset(NULL, 0, 0, gfp_mask, bs);
if (!b)
return NULL;
@ -1743,7 +1749,7 @@ struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs,
struct bio *bio;
if (!(kiocb->ki_flags & IOCB_ALLOC_CACHE) || nr_vecs > BIO_INLINE_VECS)
return bio_alloc_bioset(GFP_KERNEL, nr_vecs, bs);
return bio_alloc_bioset(NULL, nr_vecs, 0, GFP_KERNEL, bs);
cache = per_cpu_ptr(bs->cache, get_cpu());
if (cache->free_list) {
@ -1757,7 +1763,7 @@ struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs,
return bio;
}
put_cpu();
bio = bio_alloc_bioset(GFP_KERNEL, nr_vecs, bs);
bio = bio_alloc_bioset(NULL, nr_vecs, 0, GFP_KERNEL, bs);
bio_set_flag(bio, BIO_PERCPU_CACHE);
return bio;
}

6
block/bounce.c
View File

@ -165,12 +165,10 @@ static struct bio *bounce_clone_bio(struct bio *bio_src)
* asking for trouble and would force extra work on
* __bio_clone_fast() anyways.
*/
bio = bio_alloc_bioset(GFP_NOIO, bio_segments(bio_src),
&bounce_bio_set);
bio->bi_bdev = bio_src->bi_bdev;
bio = bio_alloc_bioset(bio_src->bi_bdev, bio_segments(bio_src),
bio_src->bi_opf, GFP_NOIO, &bounce_bio_set);
if (bio_flagged(bio_src, BIO_REMAPPED))
bio_set_flag(bio, BIO_REMAPPED);
bio->bi_opf = bio_src->bi_opf;
bio->bi_ioprio = bio_src->bi_ioprio;
bio->bi_write_hint = bio_src->bi_write_hint;
bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector;

5
drivers/block/drbd/drbd_actlog.c
View File

@ -138,15 +138,14 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
op_flags |= REQ_FUA | REQ_PREFLUSH;
op_flags |= REQ_SYNC;
bio = bio_alloc_bioset(GFP_NOIO, 1, &drbd_md_io_bio_set);
bio_set_dev(bio, bdev->md_bdev);
bio = bio_alloc_bioset(bdev->md_bdev, 1, op | op_flags, GFP_NOIO,
&drbd_md_io_bio_set);
bio->bi_iter.bi_sector = sector;
err = -EIO;
if (bio_add_page(bio, device->md_io.page, size, 0) != size)
goto out;
bio->bi_private = device;
bio->bi_end_io = drbd_md_endio;
bio_set_op_attrs(bio, op, op_flags);
if (op != REQ_OP_WRITE && device->state.disk == D_DISKLESS && device->ldev == NULL)
/* special case, drbd_md_read() during drbd_adm_attach(): no get_ldev */

7
drivers/block/drbd/drbd_bitmap.c
View File

@ -976,12 +976,13 @@ static void drbd_bm_endio(struct bio *bio)
static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_hold(local)
{
struct bio *bio = bio_alloc_bioset(GFP_NOIO, 1, &drbd_md_io_bio_set);
struct drbd_device *device = ctx->device;
unsigned int op = (ctx->flags & BM_AIO_READ) ? REQ_OP_READ : REQ_OP_WRITE;
struct bio *bio = bio_alloc_bioset(device->ldev->md_bdev, 1, op,
GFP_NOIO, &drbd_md_io_bio_set);
struct drbd_bitmap *b = device->bitmap;
struct page *page;
unsigned int len;
unsigned int op = (ctx->flags & BM_AIO_READ) ? REQ_OP_READ : REQ_OP_WRITE;
sector_t on_disk_sector =
device->ldev->md.md_offset + device->ldev->md.bm_offset;
@ -1006,14 +1007,12 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho
bm_store_page_idx(page, page_nr);
} else
page = b->bm_pages[page_nr];
bio_set_dev(bio, device->ldev->md_bdev);
bio->bi_iter.bi_sector = on_disk_sector;
/* bio_add_page of a single page to an empty bio will always succeed,
* according to api. Do we want to assert that? */
bio_add_page(bio, page, len, 0);
bio->bi_private = ctx;
bio->bi_end_io = drbd_bm_endio;
bio_set_op_attrs(bio, op, 0);
if (drbd_insert_fault(device, (op == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) {
bio_io_error(bio);

12
drivers/md/bcache/request.c
View File

@ -913,14 +913,13 @@ static int cached_dev_cache_miss(struct btree *b, struct search *s,
/* btree_search_recurse()'s btree iterator is no good anymore */
ret = miss == bio ? MAP_DONE : -EINTR;
cache_bio = bio_alloc_bioset(GFP_NOWAIT,
cache_bio = bio_alloc_bioset(miss->bi_bdev,
DIV_ROUND_UP(s->insert_bio_sectors, PAGE_SECTORS),
&dc->disk.bio_split);
0, GFP_NOWAIT, &dc->disk.bio_split);
if (!cache_bio)
goto out_submit;
cache_bio->bi_iter.bi_sector = miss->bi_iter.bi_sector;
bio_copy_dev(cache_bio, miss);
cache_bio->bi_iter.bi_size = s->insert_bio_sectors << 9;
cache_bio->bi_end_io = backing_request_endio;
@ -1025,16 +1024,15 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
*/
struct bio *flush;
flush = bio_alloc_bioset(GFP_NOIO, 0,
&dc->disk.bio_split);
flush = bio_alloc_bioset(bio->bi_bdev, 0,
REQ_OP_WRITE | REQ_PREFLUSH,
GFP_NOIO, &dc->disk.bio_split);
if (!flush) {
s->iop.status = BLK_STS_RESOURCE;
goto insert_data;
}
bio_copy_dev(flush, bio);
flush->bi_end_io = backing_request_endio;
flush->bi_private = cl;
flush->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH;
/* I/O request sent to backing device */
closure_bio_submit(s->iop.c, flush, cl);
}

5
drivers/md/dm-crypt.c
View File

@ -1672,11 +1672,10 @@ retry:
if (unlikely(gfp_mask & __GFP_DIRECT_RECLAIM))
mutex_lock(&cc->bio_alloc_lock);
clone = bio_alloc_bioset(GFP_NOIO, nr_iovecs, &cc->bs);
clone = bio_alloc_bioset(cc->dev->bdev, nr_iovecs, io->base_bio->bi_opf,
GFP_NOIO, &cc->bs);
clone->bi_private = io;
clone->bi_end_io = crypt_endio;
bio_set_dev(clone, cc->dev->bdev);
clone->bi_opf = io->base_bio->bi_opf;
remaining_size = size;

5
drivers/md/dm-io.c
View File

@ -345,11 +345,10 @@ static void do_region(int op, int op_flags, unsigned region,
(PAGE_SIZE >> SECTOR_SHIFT)));
}
bio = bio_alloc_bioset(GFP_NOIO, num_bvecs, &io->client->bios);
bio = bio_alloc_bioset(where->bdev, num_bvecs, op | op_flags,
GFP_NOIO, &io->client->bios);
bio->bi_iter.bi_sector = where->sector + (where->count - remaining);
bio_set_dev(bio, where->bdev);
bio->bi_end_io = endio;
bio_set_op_attrs(bio, op, op_flags);
store_io_and_region_in_bio(bio, io, region);
if (op == REQ_OP_DISCARD || op == REQ_OP_WRITE_ZEROES) {

7
drivers/md/dm-writecache.c
View File

@ -1821,11 +1821,11 @@ static void __writecache_writeback_pmem(struct dm_writecache *wc, struct writeba
max_pages = e->wc_list_contiguous;
bio = bio_alloc_bioset(GFP_NOIO, max_pages, &wc->bio_set);
bio = bio_alloc_bioset(wc->dev->bdev, max_pages, REQ_OP_WRITE,
GFP_NOIO, &wc->bio_set);
wb = container_of(bio, struct writeback_struct, bio);
wb->wc = wc;
bio->bi_end_io = writecache_writeback_endio;
bio_set_dev(bio, wc->dev->bdev);
bio->bi_iter.bi_sector = read_original_sector(wc, e);
if (max_pages <= WB_LIST_INLINE ||
unlikely(!(wb->wc_list = kmalloc_array(max_pages, sizeof(struct wc_entry *),
@ -1852,7 +1852,8 @@ static void __writecache_writeback_pmem(struct dm_writecache *wc, struct writeba
wb->wc_list[wb->wc_list_n++] = f;
e = f;
}
bio_set_op_attrs(bio, REQ_OP_WRITE, WC_MODE_FUA(wc) * REQ_FUA);
if (WC_MODE_FUA(wc))
bio->bi_opf |= REQ_FUA;
if (writecache_has_error(wc)) {
bio->bi_status = BLK_STS_IOERR;
bio_endio(bio);

5
drivers/md/dm.c
View File

@ -519,7 +519,7 @@ static struct dm_io *alloc_io(struct mapped_device *md, struct bio *bio)
struct dm_target_io *tio;
struct bio *clone;
clone = bio_alloc_bioset(GFP_NOIO, 0, &md->io_bs);
clone = bio_alloc_bioset(NULL, 0, 0, GFP_NOIO, &md->io_bs);
tio = container_of(clone, struct dm_target_io, clone);
tio->inside_dm_io = true;
@ -552,7 +552,8 @@ static struct dm_target_io *alloc_tio(struct clone_info *ci, struct dm_target *t
/* the dm_target_io embedded in ci->io is available */
tio = &ci->io->tio;
} else {
struct bio *clone = bio_alloc_bioset(gfp_mask, 0, &ci->io->md->bs);
struct bio *clone = bio_alloc_bioset(NULL, 0, 0, gfp_mask,
&ci->io->md->bs);
if (!clone)
return NULL;

16
drivers/md/md.c
View File

@ -562,11 +562,11 @@ static void submit_flushes(struct work_struct *ws)
atomic_inc(&rdev->nr_pending);
atomic_inc(&rdev->nr_pending);
rcu_read_unlock();
bi = bio_alloc_bioset(GFP_NOIO, 0, &mddev->bio_set);
bi = bio_alloc_bioset(rdev->bdev, 0,
REQ_OP_WRITE | REQ_PREFLUSH,
GFP_NOIO, &mddev->bio_set);
bi->bi_end_io = md_end_flush;
bi->bi_private = rdev;
bio_set_dev(bi, rdev->bdev);
bi->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH;
atomic_inc(&mddev->flush_pending);
submit_bio(bi);
rcu_read_lock();
@ -955,7 +955,6 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
* If an error occurred, call md_error
*/
struct bio *bio;
int ff = 0;
if (!page)
return;
@ -963,11 +962,13 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
if (test_bit(Faulty, &rdev->flags))
return;
bio = bio_alloc_bioset(GFP_NOIO, 1, &mddev->sync_set);
bio = bio_alloc_bioset(rdev->meta_bdev ? rdev->meta_bdev : rdev->bdev,
1,
REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH | REQ_FUA,
GFP_NOIO, &mddev->sync_set);
atomic_inc(&rdev->nr_pending);
bio_set_dev(bio, rdev->meta_bdev ? rdev->meta_bdev : rdev->bdev);
bio->bi_iter.bi_sector = sector;
bio_add_page(bio, page, size, 0);
bio->bi_private = rdev;
@ -976,8 +977,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
if (test_bit(MD_FAILFAST_SUPPORTED, &mddev->flags) &&
test_bit(FailFast, &rdev->flags) &&
!test_bit(LastDev, &rdev->flags))
ff = MD_FAILFAST;
bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH | REQ_FUA | ff;
bio->bi_opf |= MD_FAILFAST;
atomic_inc(&mddev->pending_writes);
submit_bio(bio);

3
drivers/md/raid1.c
View File

@ -1126,7 +1126,8 @@ static void alloc_behind_master_bio(struct r1bio *r1_bio,
int i = 0;
struct bio *behind_bio = NULL;
behind_bio = bio_alloc_bioset(GFP_NOIO, vcnt, &r1_bio->mddev->bio_set);
behind_bio = bio_alloc_bioset(NULL, vcnt, 0, GFP_NOIO,
&r1_bio->mddev->bio_set);
if (!behind_bio)
return;

6
drivers/md/raid10.c
View File

@ -4892,14 +4892,12 @@ read_more:
return sectors_done;
}
read_bio = bio_alloc_bioset(GFP_KERNEL, RESYNC_PAGES, &mddev->bio_set);
bio_set_dev(read_bio, rdev->bdev);
read_bio = bio_alloc_bioset(rdev->bdev, RESYNC_PAGES, REQ_OP_READ,
GFP_KERNEL, &mddev->bio_set);
read_bio->bi_iter.bi_sector = (r10_bio->devs[r10_bio->read_slot].addr
+ rdev->data_offset);
read_bio->bi_private = r10_bio;
read_bio->bi_end_io = end_reshape_read;
bio_set_op_attrs(read_bio, REQ_OP_READ, 0);
r10_bio->master_bio = read_bio;
r10_bio->read_slot = r10_bio->devs[r10_bio->read_slot].devnum;

8
drivers/md/raid5-cache.c
View File

@ -735,10 +735,9 @@ static void r5l_submit_current_io(struct r5l_log *log)
static struct bio *r5l_bio_alloc(struct r5l_log *log)
{
struct bio *bio = bio_alloc_bioset(GFP_NOIO, BIO_MAX_VECS, &log->bs);
struct bio *bio = bio_alloc_bioset(log->rdev->bdev, BIO_MAX_VECS,
REQ_OP_WRITE, GFP_NOIO, &log->bs);
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
bio_set_dev(bio, log->rdev->bdev);
bio->bi_iter.bi_sector = log->rdev->data_offset + log->log_start;
return bio;
@ -1634,7 +1633,8 @@ static int r5l_recovery_allocate_ra_pool(struct r5l_log *log,
{
struct page *page;
ctx->ra_bio = bio_alloc_bioset(GFP_KERNEL, BIO_MAX_VECS, &log->bs);
ctx->ra_bio = bio_alloc_bioset(NULL, BIO_MAX_VECS, 0, GFP_KERNEL,
&log->bs);
if (!ctx->ra_bio)
return -ENOMEM;

11
drivers/md/raid5-ppl.c
View File

@ -496,11 +496,10 @@ static void ppl_submit_iounit(struct ppl_io_unit *io)
if (!bio_add_page(bio, sh->ppl_page, PAGE_SIZE, 0)) {
struct bio *prev = bio;
bio = bio_alloc_bioset(GFP_NOIO, BIO_MAX_VECS,
bio = bio_alloc_bioset(prev->bi_bdev, BIO_MAX_VECS,
prev->bi_opf, GFP_NOIO,
&ppl_conf->bs);
bio->bi_opf = prev->bi_opf;
bio->bi_write_hint = prev->bi_write_hint;
bio_copy_dev(bio, prev);
bio->bi_iter.bi_sector = bio_end_sector(prev);
bio_add_page(bio, sh->ppl_page, PAGE_SIZE, 0);
@ -637,10 +636,10 @@ static void ppl_do_flush(struct ppl_io_unit *io)
struct bio *bio;
char b[BDEVNAME_SIZE];
bio = bio_alloc_bioset(GFP_NOIO, 0, &ppl_conf->flush_bs);
bio_set_dev(bio, bdev);
bio = bio_alloc_bioset(bdev, 0, GFP_NOIO,
REQ_OP_WRITE | REQ_PREFLUSH,
&ppl_conf->flush_bs);
bio->bi_private = io;
bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH;
bio->bi_end_io = ppl_flush_endio;
pr_debug("%s: dev: %s\n", __func__,

6
drivers/target/target_core_iblock.c
View File

@ -352,18 +352,16 @@ static struct bio *iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num,
* Only allocate as many vector entries as the bio code allows us to,
* we'll loop later on until we have handled the whole request.
*/
bio = bio_alloc_bioset(GFP_NOIO, bio_max_segs(sg_num),
&ib_dev->ibd_bio_set);
bio = bio_alloc_bioset(ib_dev->ibd_bd, bio_max_segs(sg_num), opf,
GFP_NOIO, &ib_dev->ibd_bio_set);
if (!bio) {
pr_err("Unable to allocate memory for bio\n");
return NULL;
}
bio_set_dev(bio, ib_dev->ibd_bd);
bio->bi_private = cmd;
bio->bi_end_io = &iblock_bio_done;
bio->bi_iter.bi_sector = lba;
bio->bi_opf = opf;
return bio;
}

2
fs/btrfs/extent_io.c
View File

@ -3143,7 +3143,7 @@ struct bio *btrfs_bio_alloc(unsigned int nr_iovecs)
struct bio *bio;
ASSERT(0 < nr_iovecs && nr_iovecs <= BIO_MAX_VECS);
bio = bio_alloc_bioset(GFP_NOFS, nr_iovecs, &btrfs_bioset);
bio = bio_alloc_bioset(NULL, nr_iovecs, 0, GFP_NOFS, &btrfs_bioset);
btrfs_bio_init(btrfs_bio(bio));
return bio;
}

7
fs/f2fs/data.c
View File

@ -394,7 +394,7 @@ static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages)
struct f2fs_sb_info *sbi = fio->sbi;
struct bio *bio;
bio = bio_alloc_bioset(GFP_NOIO, npages, &f2fs_bioset);
bio = bio_alloc_bioset(NULL, npages, 0, GFP_NOIO, &f2fs_bioset);
f2fs_target_device(sbi, fio->new_blkaddr, bio);
if (is_read_io(fio->op)) {
@ -985,8 +985,8 @@ static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
struct bio_post_read_ctx *ctx = NULL;
unsigned int post_read_steps = 0;
bio = bio_alloc_bioset(for_write ? GFP_NOIO : GFP_KERNEL,
bio_max_segs(nr_pages), &f2fs_bioset);
bio = bio_alloc_bioset(NULL, bio_max_segs(nr_pages), REQ_OP_READ,
for_write ? GFP_NOIO : GFP_KERNEL, &f2fs_bioset);
if (!bio)
return ERR_PTR(-ENOMEM);
@ -994,7 +994,6 @@ static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
f2fs_target_device(sbi, blkaddr, bio);
bio->bi_end_io = f2fs_read_end_io;
bio_set_op_attrs(bio, REQ_OP_READ, op_flag);
if (fscrypt_inode_uses_fs_layer_crypto(inode))
post_read_steps |= STEP_DECRYPT;

6
fs/iomap/buffered-io.c
View File

@ -1196,10 +1196,10 @@ iomap_alloc_ioend(struct inode *inode, struct iomap_writepage_ctx *wpc,
struct iomap_ioend *ioend;
struct bio *bio;
bio = bio_alloc_bioset(GFP_NOFS, BIO_MAX_VECS, &iomap_ioend_bioset);
bio_set_dev(bio, wpc->iomap.bdev);
bio = bio_alloc_bioset(wpc->iomap.bdev, BIO_MAX_VECS,
REQ_OP_WRITE | wbc_to_write_flags(wbc),
GFP_NOFS, &iomap_ioend_bioset);
bio->bi_iter.bi_sector = sector;
bio->bi_opf = REQ_OP_WRITE | wbc_to_write_flags(wbc);
bio->bi_write_hint = inode->i_write_hint;
wbc_init_bio(wbc, bio);

7
include/linux/bio.h
View File

@ -405,8 +405,9 @@ extern void bioset_exit(struct bio_set *);
extern int biovec_init_pool(mempool_t *pool, int pool_entries);
extern int bioset_init_from_src(struct bio_set *bs, struct bio_set *src);
struct bio *bio_alloc_bioset(gfp_t gfp, unsigned short nr_iovecs,
struct bio_set *bs);
struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs,
unsigned int opf, gfp_t gfp_mask,
struct bio_set *bs);
struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs,
struct bio_set *bs);
struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned short nr_iovecs);
@ -419,7 +420,7 @@ extern struct bio_set fs_bio_set;
static inline struct bio *bio_alloc(gfp_t gfp_mask, unsigned short nr_iovecs)
{
return bio_alloc_bioset(gfp_mask, nr_iovecs, &fs_bio_set);
return bio_alloc_bioset(NULL, nr_iovecs, 0, gfp_mask, &fs_bio_set);
}
void submit_bio(struct bio *bio);