From 673ca68d93879b9ffbbed874c9e70ca6e37cab15 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 5 Apr 2017 14:05:51 +1000 Subject: [PATCH] md/raid1: factor out flush_bio_list() flush_pending_writes() and raid1_unplug() each contain identical copies of a fairly large slab of code. So factor that out into new flush_bio_list() to simplify maintenance. Signed-off-by: NeilBrown Signed-off-by: Shaohua Li --- drivers/md/raid1.c | 66 ++++++++++++++++++---------------------------- 1 file changed, 26 insertions(+), 40 deletions(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 29a9aa9254c3..57611f43ed6c 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -787,6 +787,30 @@ static int raid1_congested(struct mddev *mddev, int bits) return ret; } +static void flush_bio_list(struct r1conf *conf, struct bio *bio) +{ + /* flush any pending bitmap writes to disk before proceeding w/ I/O */ + bitmap_unplug(conf->mddev->bitmap); + wake_up(&conf->wait_barrier); + + while (bio) { /* submit pending writes */ + struct bio *next = bio->bi_next; + struct md_rdev *rdev = (void*)bio->bi_bdev; + bio->bi_next = NULL; + bio->bi_bdev = rdev->bdev; + if (test_bit(Faulty, &rdev->flags)) { + bio->bi_error = -EIO; + bio_endio(bio); + } else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) && + !blk_queue_discard(bdev_get_queue(bio->bi_bdev)))) + /* Just ignore it */ + bio_endio(bio); + else + generic_make_request(bio); + bio = next; + } +} + static void flush_pending_writes(struct r1conf *conf) { /* Any writes that have been queued but are awaiting @@ -799,27 +823,7 @@ static void flush_pending_writes(struct r1conf *conf) bio = bio_list_get(&conf->pending_bio_list); conf->pending_count = 0; spin_unlock_irq(&conf->device_lock); - /* flush any pending bitmap writes to - * disk before proceeding w/ I/O */ - bitmap_unplug(conf->mddev->bitmap); - wake_up(&conf->wait_barrier); - - while (bio) { /* submit pending writes */ - struct bio *next = bio->bi_next; - struct md_rdev *rdev = (void*)bio->bi_bdev; - bio->bi_next = NULL; - bio->bi_bdev = rdev->bdev; - if (test_bit(Faulty, &rdev->flags)) { - bio->bi_error = -EIO; - bio_endio(bio); - } else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) && - !blk_queue_discard(bdev_get_queue(bio->bi_bdev)))) - /* Just ignore it */ - bio_endio(bio); - else - generic_make_request(bio); - bio = next; - } + flush_bio_list(conf, bio); } else spin_unlock_irq(&conf->device_lock); } @@ -1152,25 +1156,7 @@ static void raid1_unplug(struct blk_plug_cb *cb, bool from_schedule) /* we aren't scheduling, so we can do the write-out directly. */ bio = bio_list_get(&plug->pending); - bitmap_unplug(mddev->bitmap); - wake_up(&conf->wait_barrier); - - while (bio) { /* submit pending writes */ - struct bio *next = bio->bi_next; - struct md_rdev *rdev = (void*)bio->bi_bdev; - bio->bi_next = NULL; - bio->bi_bdev = rdev->bdev; - if (test_bit(Faulty, &rdev->flags)) { - bio->bi_error = -EIO; - bio_endio(bio); - } else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) && - !blk_queue_discard(bdev_get_queue(bio->bi_bdev)))) - /* Just ignore it */ - bio_endio(bio); - else - generic_make_request(bio); - bio = next; - } + flush_bio_list(conf, bio); kfree(plug); } -- 2.20.1