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authorJunichi Nomura <j-nomura@ce.jp.nec.com>2014-10-04 01:27:12 +0400
committerJens Axboe <axboe@fb.com>2014-10-04 01:28:18 +0400
commitd8f429e1669b9709f5b669aac9d734dbe0640891 (patch)
treec14ac256f51a230b472ada1525d2e7275f266436 /include/linux/bio.h
parent11dfce509eaa35e8fc81cb50d0910c0e235fd7e2 (diff)
downloadlinux-d8f429e1669b9709f5b669aac9d734dbe0640891.tar.xz
block: add bioset_create_nobvec()
Users of bio_clone_fast() do not want bios with their own bvecs. Allocating a bvec mempool as part of the bioset intended for such users is a waste of memory. bioset_create_nobvec() creates a bioset that doesn't have the bvec mempool. Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/bio.h')
-rw-r--r--include/linux/bio.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index ce6b75964b71..7347f486ceca 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -378,6 +378,7 @@ static inline struct bio *bio_next_split(struct bio *bio, int sectors,
}
extern struct bio_set *bioset_create(unsigned int, unsigned int);
+extern struct bio_set *bioset_create_nobvec(unsigned int, unsigned int);
extern void bioset_free(struct bio_set *);
extern mempool_t *biovec_create_pool(int pool_entries);