From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Lei Subject: [PATCH V11 16/19] block: always define BIO_MAX_PAGES as 256 Date: Wed, 21 Nov 2018 11:23:24 +0800 Message-ID: <20181121032327.8434-17-ming.lei@redhat.com> References: <20181121032327.8434-1-ming.lei@redhat.com> Return-path: In-Reply-To: <20181121032327.8434-1-ming.lei@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cluster-devel-bounces@redhat.com Errors-To: cluster-devel-bounces@redhat.com To: Jens Axboe Cc: Mike Snitzer , linux-mm@kvack.org, dm-devel@redhat.com, Christoph Hellwig , Sagi Grimberg , "Darrick J . Wong" , Omar Sandoval , cluster-devel@redhat.com, linux-ext4@vger.kernel.org, Shaohua Li , Kent Overstreet , Boaz Harrosh , Gao Xiang , Coly Li , linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, Alexander Viro , David Sterba , Ming Lei , linux-block@vger.kernel.org, Theodore Ts'o , linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org List-Id: linux-bcache@vger.kernel.org Now multi-page bvec can cover CONFIG_THP_SWAP, so we don't need to increase BIO_MAX_PAGES for it. CONFIG_THP_SWAP needs to split one THP into normal pages and adds them all to one bio. With multipage-bvec, it just takes one bvec to hold them all. Reviewed-by: Christoph Hellwig Signed-off-by: Ming Lei --- include/linux/bio.h | 8 -------- 1 file changed, 8 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index 7edad188568a..e5b975fa0558 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -34,15 +34,7 @@ #define BIO_BUG_ON #endif -#ifdef CONFIG_THP_SWAP -#if HPAGE_PMD_NR > 256 -#define BIO_MAX_PAGES HPAGE_PMD_NR -#else #define BIO_MAX_PAGES 256 -#endif -#else -#define BIO_MAX_PAGES 256 -#endif #define bio_prio(bio) (bio)->bi_ioprio #define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio) -- 2.9.5