block: don't create bio_vec slabs of less than the inline number



If we don't have CONFIG_BLK_DEV_INTEGRITY set, then we don't have
any external dependencies on the bio_vec slabs. So don't create
the ones that we will inline anyway.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent 34053979

fs/bio.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1589,6 +1589,13 @@ static void __init biovec_init_slabs(void)
		int size;
		struct biovec_slab *bvs = bvec_slabs + i;

		#ifndef CONFIG_BLK_DEV_INTEGRITY
		if (bvs->nr_vecs <= BIO_INLINE_VECS) {
		bvs->slab = NULL;
		continue;
		}
		#endif

		size = bvs->nr_vecs * sizeof(struct bio_vec);
		bvs->slab = kmem_cache_create(bvs->name, size, 0,
		SLAB_HWCACHE_ALIGN\|SLAB_PANIC, NULL);