From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754808AbaLVLuq (ORCPT ); Mon, 22 Dec 2014 06:50:46 -0500 Received: from mail-wg0-f44.google.com ([74.125.82.44]:38611 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754748AbaLVLuj (ORCPT ); Mon, 22 Dec 2014 06:50:39 -0500 From: Dongsu Park To: linux-kernel@vger.kernel.org Cc: Jens Axboe , Kent Overstreet , Ming Lin , Dongsu Park , Al Viro , Dave Kleikamp , linux-fsdevel@vger.kernel.org Subject: [RFC PATCH 15/17] fs: use helper bio_add_page() instead of open coding on bi_io_vec Date: Mon, 22 Dec 2014 12:48:42 +0100 Message-Id: X-Mailer: git-send-email 2.1.0 In-Reply-To: References: <83a9ee8a309f8e08490c5dd715a608ea054f5c33.1419241597.git.dongsu.park@profitbricks.com> <0b6ba533a64aec98e8447bfd30c6622d0729d12e.1419241597.git.dongsu.park@profitbricks.com> <4334b90a56b96ad7a11e4ba7eb97c2cf4405950d.1419241597.git.dongsu.park@profitbricks.com> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kent Overstreet Call pre-defined helper bio_add_page() instead of open coding for iterating through bi_io_vec[]. Doing that, it's possible to make some parts in filesystems and mm/page_io.c simpler than before. Signed-off-by: Kent Overstreet [dpark: add more description in commit message] Signed-off-by: Dongsu Park Cc: Al Viro Cc: Dave Kleikamp Cc: linux-fsdevel@vger.kernel.org --- fs/buffer.c | 7 ++----- fs/jfs/jfs_logmgr.c | 14 ++++---------- mm/page_io.c | 8 +++----- 3 files changed, 9 insertions(+), 20 deletions(-) diff --git a/fs/buffer.c b/fs/buffer.c index 20805db..35ac0ec 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -3022,12 +3022,9 @@ int _submit_bh(int rw, struct buffer_head *bh, unsigned long bio_flags) bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); bio->bi_bdev = bh->b_bdev; - bio->bi_io_vec[0].bv_page = bh->b_page; - bio->bi_io_vec[0].bv_len = bh->b_size; - bio->bi_io_vec[0].bv_offset = bh_offset(bh); - bio->bi_vcnt = 1; - bio->bi_iter.bi_size = bh->b_size; + bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh)); + BUG_ON(bio->bi_iter.bi_size != bh->b_size); bio->bi_end_io = end_bio_bh_io_sync; bio->bi_private = bh; diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index bc462dc..46fae06 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -1999,12 +1999,9 @@ static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp) bio->bi_iter.bi_sector = bp->l_blkno << (log->l2bsize - 9); bio->bi_bdev = log->bdev; - bio->bi_io_vec[0].bv_page = bp->l_page; - bio->bi_io_vec[0].bv_len = LOGPSIZE; - bio->bi_io_vec[0].bv_offset = bp->l_offset; - bio->bi_vcnt = 1; - bio->bi_iter.bi_size = LOGPSIZE; + bio_add_page(bio, bp->l_page, LOGPSIZE, bp->l_offset); + BUG_ON(bio->bi_iter.bi_size != LOGPSIZE); bio->bi_end_io = lbmIODone; bio->bi_private = bp; @@ -2145,12 +2142,9 @@ static void lbmStartIO(struct lbuf * bp) bio = bio_alloc(GFP_NOFS, 1); bio->bi_iter.bi_sector = bp->l_blkno << (log->l2bsize - 9); bio->bi_bdev = log->bdev; - bio->bi_io_vec[0].bv_page = bp->l_page; - bio->bi_io_vec[0].bv_len = LOGPSIZE; - bio->bi_io_vec[0].bv_offset = bp->l_offset; - bio->bi_vcnt = 1; - bio->bi_iter.bi_size = LOGPSIZE; + bio_add_page(bio, bp->l_page, LOGPSIZE, bp->l_offset); + BUG_ON(bio->bi_iter.bi_size != LOGPSIZE); bio->bi_end_io = lbmIODone; bio->bi_private = bp; diff --git a/mm/page_io.c b/mm/page_io.c index 955db8b..8c878c7 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -33,12 +33,10 @@ static struct bio *get_swap_bio(gfp_t gfp_flags, if (bio) { bio->bi_iter.bi_sector = map_swap_page(page, &bio->bi_bdev); bio->bi_iter.bi_sector <<= PAGE_SHIFT - 9; - bio->bi_io_vec[0].bv_page = page; - bio->bi_io_vec[0].bv_len = PAGE_SIZE; - bio->bi_io_vec[0].bv_offset = 0; - bio->bi_vcnt = 1; - bio->bi_iter.bi_size = PAGE_SIZE; bio->bi_end_io = end_io; + + bio_add_page(bio, page, PAGE_SIZE, 0); + BUG_ON(bio->bi_iter.bi_size != PAGE_SIZE); } return bio; } -- 2.1.0