From patchwork Mon Oct 15 20:08:38 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kent Overstreet X-Patchwork-Id: 1596051 Return-Path: X-Original-To: patchwork-dm-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from mx3-phx2.redhat.com (mx3-phx2.redhat.com [209.132.183.24]) by patchwork1.kernel.org (Postfix) with ESMTP id 3225F3FD86 for ; Mon, 15 Oct 2012 20:14:59 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by mx3-phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q9FKB9fG010233; Mon, 15 Oct 2012 16:11:09 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q9FKA0Zr026916 for ; Mon, 15 Oct 2012 16:10:00 -0400 Received: from mx1.redhat.com (ext-mx16.extmail.prod.ext.phx2.redhat.com [10.5.110.21]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q9FK9tBK026552 for ; Mon, 15 Oct 2012 16:09:55 -0400 Received: from mail-pa0-f46.google.com (mail-pa0-f46.google.com [209.85.220.46]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q9FK9j4V018962 for ; Mon, 15 Oct 2012 16:09:48 -0400 Received: by mail-pa0-f46.google.com with SMTP id hz1so5214154pad.33 for ; Mon, 15 Oct 2012 13:09:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=PACyOE2RVOjDXr25PW1H7vCLghg7XLKguIW4+jCN364=; b=JbFLuqdFwfLHtPtICmO3Nwe2hg2i5+lkQMKY2BQt3JI/2NaWzu0vAOM9CcLrWuLcRL Iheu+fjzvAVAvps075LcT0yIIfCSxSPdiLxbCfpyWjvGVcQiszI2xzbDWLccaYT0vu05 0ClAQ/i/akfE5UcqJOQL3Ehgs08PZ71V/VQ8becpeUJ0QH3ckuqNCUJQ9rFdG+hfhWcD sBNG+BZLUaHgKMTJoGTg3h2oGbTIABmwBzb3o9niUB/YJ1ZTXbrQfpa0mGEmY1GB8Bck l/LIPa2tAtysE8dN8ZylX8v9QlI8TUS8QWBZVGoNsl7hbM7x38MbY3Hlntf/p6KkG65C AEMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references :x-gm-message-state; bh=PACyOE2RVOjDXr25PW1H7vCLghg7XLKguIW4+jCN364=; b=chuVONw7A4qI8P3iccSPUj7P2SEYfj+SJgfBPZB4JU6+rE9FGNGtxjlgvpr7Mj7Q5J 0bmpUYrl56Ugp9y6xqyl9HNv6DGU/k9J5Iy8mOpefCF097JcBWEmNwHh1rGrRkdyey8J 9KnKFAjfYj3e4h13dvzws/oHi4oND9EnmeXlZOoPCVQ80bqzQSmNCAFtm+Z+iuiTOa01 TPH9q+vFRK7FdktZTma6KKeJU1hgUdsn1UScmQFkxfB83hza24WSvvD2ghtpfNelgpKJ 1pY+/j8+RbVm3ZrAwhxjFxcYEu5OhhxflIgxd6ceVuaB/ao74OLzVNDLgAWp1BSt53dr e2iA== Received: by 10.68.213.1 with SMTP id no1mr40145141pbc.123.1350331788473; Mon, 15 Oct 2012 13:09:48 -0700 (PDT) Received: from formenos.mtv.corp.google.com (formenos.mtv.corp.google.com [172.18.110.66]) by mx.google.com with ESMTPS id k9sm3021703paz.22.2012.10.15.13.09.46 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 15 Oct 2012 13:09:47 -0700 (PDT) From: Kent Overstreet To: linux-bcache@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@redhat.com Date: Mon, 15 Oct 2012 13:08:38 -0700 Message-Id: <1350331769-14856-5-git-send-email-koverstreet@google.com> In-Reply-To: <1350331769-14856-1-git-send-email-koverstreet@google.com> References: <1350331769-14856-1-git-send-email-koverstreet@google.com> X-Gm-Message-State: ALoCoQn5ZZ6LDNwqWUL4h5cH7H4OMhIXwO3fc5Hgze16s1/XdVVgjLvipKxGkjXRws0h+xhQsb0pFe95lUGtzVDf2CIPeuLNpq7c8v3PBxaijPwkY6/z6nIIhUaN1hdKreBsvCZDnDjg3jhtmMhlykD53Lbsb47cHYv+vdfqVPhU5pB9da97+2ZL8AjgNd5j+Umcp+7l8eyk X-RedHat-Spam-Score: -3.072 (BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_LOW, RP_MATCHES_RCVD, SPF_PASS) X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-Scanned-By: MIMEDefang 2.68 on 10.5.110.21 X-loop: dm-devel@redhat.com Cc: axboe@kernel.dk, linux-s390@vger.kernel.org, Chris Mason , Jiri Kosina , Kent Overstreet , Heiko Carstens , Martin Schwidefsky , Alasdair Kergon , tj@kernel.org, Steven Whitehouse , vgoyal@redhat.com, Lars Ellenberg Subject: [dm-devel] [PATCH v4 04/24] block: Add bio_end_sector() X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk Reply-To: device-mapper development List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com Just a little convenience macro - main reason to add it now is preparing for immutable bio vecs, it'll reduce the size of the patch that puts bi_sector/bi_size/bi_idx into a struct bvec_iter. Signed-off-by: Kent Overstreet CC: Jens Axboe CC: Lars Ellenberg CC: Jiri Kosina CC: Alasdair Kergon CC: dm-devel@redhat.com CC: Neil Brown CC: Martin Schwidefsky CC: Heiko Carstens CC: linux-s390@vger.kernel.org CC: Chris Mason CC: Steven Whitehouse Acked-by: Steven Whitehouse --- block/blk-core.c | 2 +- block/cfq-iosched.c | 7 ++----- block/deadline-iosched.c | 2 +- drivers/block/brd.c | 3 +-- drivers/block/drbd/drbd_req.c | 2 +- drivers/block/pktcdvd.c | 6 +++--- drivers/md/dm-stripe.c | 2 +- drivers/md/dm-verity.c | 2 +- drivers/md/faulty.c | 6 ++---- drivers/md/linear.c | 3 +-- drivers/md/raid1.c | 4 ++-- drivers/md/raid5.c | 14 +++++++------- drivers/s390/block/dcssblk.c | 3 +-- fs/btrfs/extent_io.c | 3 +-- fs/gfs2/lops.c | 2 +- include/linux/bio.h | 1 + 16 files changed, 27 insertions(+), 35 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index a8a1a9e..df9bb5f 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1550,7 +1550,7 @@ static void handle_bad_sector(struct bio *bio) printk(KERN_INFO "%s: rw=%ld, want=%Lu, limit=%Lu\n", bdevname(bio->bi_bdev, b), bio->bi_rw, - (unsigned long long)bio->bi_sector + bio_sectors(bio), + (unsigned long long)bio_end_sector(bio), (long long)(i_size_read(bio->bi_bdev->bd_inode) >> 9)); set_bit(BIO_EOF, &bio->bi_flags); diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index fb52df9..59b64b7 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1883,11 +1883,8 @@ cfq_find_rq_fmerge(struct cfq_data *cfqd, struct bio *bio) return NULL; cfqq = cic_to_cfqq(cic, cfq_bio_sync(bio)); - if (cfqq) { - sector_t sector = bio->bi_sector + bio_sectors(bio); - - return elv_rb_find(&cfqq->sort_list, sector); - } + if (cfqq) + return elv_rb_find(&cfqq->sort_list, bio_end_sector(bio)); return NULL; } diff --git a/block/deadline-iosched.c b/block/deadline-iosched.c index 599b12e..ef19d5f 100644 --- a/block/deadline-iosched.c +++ b/block/deadline-iosched.c @@ -132,7 +132,7 @@ deadline_merge(struct request_queue *q, struct request **req, struct bio *bio) * check for front merge */ if (dd->front_merges) { - sector_t sector = bio->bi_sector + bio_sectors(bio); + sector_t sector = bio_end_sector(bio); __rq = elv_rb_find(&dd->sort_list[bio_data_dir(bio)], sector); if (__rq) { diff --git a/drivers/block/brd.c b/drivers/block/brd.c index 531ceb3..f1a29f8 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -334,8 +334,7 @@ static void brd_make_request(struct request_queue *q, struct bio *bio) int err = -EIO; sector = bio->bi_sector; - if (sector + (bio->bi_size >> SECTOR_SHIFT) > - get_capacity(bdev->bd_disk)) + if (bio_end_sector(bio) > get_capacity(bdev->bd_disk)) goto out; if (unlikely(bio->bi_rw & REQ_DISCARD)) { diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index 01b2ac6..47f55db 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -1144,7 +1144,7 @@ void drbd_make_request(struct request_queue *q, struct bio *bio) /* to make some things easier, force alignment of requests within the * granularity of our hash tables */ s_enr = bio->bi_sector >> HT_SHIFT; - e_enr = bio->bi_size ? (bio->bi_sector+(bio->bi_size>>9)-1) >> HT_SHIFT : s_enr; + e_enr = bio->bi_size ? (bio_end_sector(bio) - 1) >> HT_SHIFT : s_enr; if (likely(s_enr == e_enr)) { do { diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 2e7de7a..26938e8 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -901,7 +901,7 @@ static void pkt_iosched_process_queue(struct pktcdvd_device *pd) pd->iosched.successive_reads += bio->bi_size >> 10; else { pd->iosched.successive_reads = 0; - pd->iosched.last_write = bio->bi_sector + bio_sectors(bio); + pd->iosched.last_write = bio_end_sector(bio); } if (pd->iosched.successive_reads >= HI_SPEED_SWITCH) { if (pd->read_speed == pd->write_speed) { @@ -2454,7 +2454,7 @@ static void pkt_make_request(struct request_queue *q, struct bio *bio) zone = ZONE(bio->bi_sector, pd); VPRINTK("pkt_make_request: start = %6llx stop = %6llx\n", (unsigned long long)bio->bi_sector, - (unsigned long long)(bio->bi_sector + bio_sectors(bio))); + (unsigned long long)bio_end_sector(bio)); /* Check if we have to split the bio */ { @@ -2462,7 +2462,7 @@ static void pkt_make_request(struct request_queue *q, struct bio *bio) sector_t last_zone; int first_sectors; - last_zone = ZONE(bio->bi_sector + bio_sectors(bio) - 1, pd); + last_zone = ZONE(bio_end_sector(bio) - 1, pd); if (last_zone != zone) { BUG_ON(last_zone != zone + pd->settings.size); first_sectors = last_zone - bio->bi_sector; diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index a087bf2..ac1a8cd 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -257,7 +257,7 @@ static int stripe_map_discard(struct stripe_c *sc, struct bio *bio, sector_t begin, end; stripe_map_range_sector(sc, bio->bi_sector, target_stripe, &begin); - stripe_map_range_sector(sc, bio->bi_sector + bio_sectors(bio), + stripe_map_range_sector(sc, bio_end_sector(bio), target_stripe, &end); if (begin < end) { bio->bi_bdev = sc->stripe[target_stripe].dev->bdev; diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c index 254d192..8f95664 100644 --- a/drivers/md/dm-verity.c +++ b/drivers/md/dm-verity.c @@ -477,7 +477,7 @@ static int verity_map(struct dm_target *ti, struct bio *bio, return -EIO; } - if ((bio->bi_sector + bio_sectors(bio)) >> + if (bio_end_sector(bio) >> (v->data_dev_block_bits - SECTOR_SHIFT) > v->data_blocks) { DMERR_LIMIT("io out of range"); return -EIO; diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c index 45135f6..4a5ca4b 100644 --- a/drivers/md/faulty.c +++ b/drivers/md/faulty.c @@ -185,8 +185,7 @@ static void make_request(struct mddev *mddev, struct bio *bio) return; } - if (check_sector(conf, bio->bi_sector, bio->bi_sector+(bio->bi_size>>9), - WRITE)) + if (check_sector(conf, bio->bi_sector, bio_end_sector(bio), WRITE)) failit = 1; if (check_mode(conf, WritePersistent)) { add_sector(conf, bio->bi_sector, WritePersistent); @@ -196,8 +195,7 @@ static void make_request(struct mddev *mddev, struct bio *bio) failit = 1; } else { /* read request */ - if (check_sector(conf, bio->bi_sector, bio->bi_sector + (bio->bi_size>>9), - READ)) + if (check_sector(conf, bio->bi_sector, bio_end_sector(bio), READ)) failit = 1; if (check_mode(conf, ReadTransient)) failit = 1; diff --git a/drivers/md/linear.c b/drivers/md/linear.c index fa211d8..af391db 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -304,8 +304,7 @@ static void linear_make_request(struct mddev *mddev, struct bio *bio) bio_io_error(bio); return; } - if (unlikely(bio->bi_sector + (bio->bi_size >> 9) > - tmp_dev->end_sector)) { + if (unlikely(bio_end_sector(bio) > tmp_dev->end_sector)) { /* This bio crosses a device boundary, so we have to * split it. */ diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 611b5f7..32eab5b 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1010,7 +1010,7 @@ static void make_request(struct mddev *mddev, struct bio * bio) md_write_start(mddev, bio); /* wait on superblock update early */ if (bio_data_dir(bio) == WRITE && - bio->bi_sector + bio->bi_size/512 > mddev->suspend_lo && + bio_end_sector(bio) > mddev->suspend_lo && bio->bi_sector < mddev->suspend_hi) { /* As the suspend_* range is controlled by * userspace, we want an interruptible @@ -1021,7 +1021,7 @@ static void make_request(struct mddev *mddev, struct bio * bio) flush_signals(current); prepare_to_wait(&conf->wait_barrier, &w, TASK_INTERRUPTIBLE); - if (bio->bi_sector + bio->bi_size/512 <= mddev->suspend_lo || + if (bio_end_sector(bio) <= mddev->suspend_lo || bio->bi_sector >= mddev->suspend_hi) break; schedule(); diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index adda94d..45a632c 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -2377,11 +2377,11 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in } else bip = &sh->dev[dd_idx].toread; while (*bip && (*bip)->bi_sector < bi->bi_sector) { - if ((*bip)->bi_sector + ((*bip)->bi_size >> 9) > bi->bi_sector) + if (bio_end_sector(*bip) > bi->bi_sector) goto overlap; bip = & (*bip)->bi_next; } - if (*bip && (*bip)->bi_sector < bi->bi_sector + ((bi->bi_size)>>9)) + if (*bip && (*bip)->bi_sector < bio_end_sector(bi)) goto overlap; BUG_ON(*bip && bi->bi_next && (*bip) != bi->bi_next); @@ -2397,8 +2397,8 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in sector < sh->dev[dd_idx].sector + STRIPE_SECTORS && bi && bi->bi_sector <= sector; bi = r5_next_bio(bi, sh->dev[dd_idx].sector)) { - if (bi->bi_sector + (bi->bi_size>>9) >= sector) - sector = bi->bi_sector + (bi->bi_size>>9); + if (bio_end_sector(bi) >= sector) + sector = bio_end_sector(bi); } if (sector >= sh->dev[dd_idx].sector + STRIPE_SECTORS) set_bit(R5_OVERWRITE, &sh->dev[dd_idx].flags); @@ -3908,7 +3908,7 @@ static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio) 0, &dd_idx, NULL); - end_sector = align_bi->bi_sector + (align_bi->bi_size >> 9); + end_sector = bio_end_sector(align_bi); rcu_read_lock(); rdev = rcu_dereference(conf->disks[dd_idx].replacement); if (!rdev || test_bit(Faulty, &rdev->flags) || @@ -4090,7 +4090,7 @@ static void make_request(struct mddev *mddev, struct bio * bi) return; logical_sector = bi->bi_sector & ~((sector_t)STRIPE_SECTORS-1); - last_sector = bi->bi_sector + (bi->bi_size>>9); + last_sector = bio_end_sector(bi); bi->bi_next = NULL; bi->bi_phys_segments = 1; /* over-loaded to count active stripes */ @@ -4553,7 +4553,7 @@ static int retry_aligned_read(struct r5conf *conf, struct bio *raid_bio) logical_sector = raid_bio->bi_sector & ~((sector_t)STRIPE_SECTORS-1); sector = raid5_compute_sector(conf, logical_sector, 0, &dd_idx, NULL); - last_sector = raid_bio->bi_sector + (raid_bio->bi_size>>9); + last_sector = bio_end_sector(raid_bio); for (; logical_sector < last_sector; logical_sector += STRIPE_SECTORS, diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index a5a55da..1d2826b 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -832,8 +832,7 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) if ((bio->bi_sector & 7) != 0 || (bio->bi_size & 4095) != 0) /* Request is not page-aligned. */ goto fail; - if (((bio->bi_size >> 9) + bio->bi_sector) - > get_capacity(bio->bi_bdev->bd_disk)) { + if (bio_end_sector(bio) > get_capacity(bio->bi_bdev->bd_disk)) { /* Request beyond end of DCSS segment. */ goto fail; } diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 4c87847..e1122a6 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2480,8 +2480,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree, if (old_compressed) contig = bio->bi_sector == sector; else - contig = bio->bi_sector + (bio->bi_size >> 9) == - sector; + contig = bio_end_sector(bio) == sector; if (prev_bio_flags != bio_flags || !contig || merge_bio(tree, page, offset, page_size, bio, bio_flags) || diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 8ff95a2..4245a7e 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -300,7 +300,7 @@ static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno) u64 nblk; if (bio) { - nblk = bio->bi_sector + bio_sectors(bio); + nblk = bio_end_sector(bio); nblk >>= sdp->sd_fsb2bb_shift; if (blkno == nblk) return bio; diff --git a/include/linux/bio.h b/include/linux/bio.h index fcb4dba..20507eb 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -67,6 +67,7 @@ #define bio_offset(bio) bio_iovec((bio))->bv_offset #define bio_segments(bio) ((bio)->bi_vcnt - (bio)->bi_idx) #define bio_sectors(bio) ((bio)->bi_size >> 9) +#define bio_end_sector(bio) ((bio)->bi_sector + bio_sectors((bio))) static inline unsigned int bio_cur_bytes(struct bio *bio) {