Commit 673ca68d authored by NeilBrown's avatar NeilBrown Committed by Shaohua Li

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: default avatarNeilBrown <neilb@suse.com>
Signed-off-by: default avatarShaohua Li <shli@fb.com>
parent 689389a0
......@@ -787,20 +787,9 @@ static int raid1_congested(struct mddev *mddev, int bits)
return ret;
}
static void flush_pending_writes(struct r1conf *conf)
static void flush_bio_list(struct r1conf *conf, struct bio *bio)
{
/* Any writes that have been queued but are awaiting
* bitmap updates get flushed here.
*/
spin_lock_irq(&conf->device_lock);
if (conf->pending_bio_list.head) {
struct bio *bio;
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 */
/* flush any pending bitmap writes to disk before proceeding w/ I/O */
bitmap_unplug(conf->mddev->bitmap);
wake_up(&conf->wait_barrier);
......@@ -820,6 +809,21 @@ static void flush_pending_writes(struct r1conf *conf)
generic_make_request(bio);
bio = next;
}
}
static void flush_pending_writes(struct r1conf *conf)
{
/* Any writes that have been queued but are awaiting
* bitmap updates get flushed here.
*/
spin_lock_irq(&conf->device_lock);
if (conf->pending_bio_list.head) {
struct bio *bio;
bio = bio_list_get(&conf->pending_bio_list);
conf->pending_count = 0;
spin_unlock_irq(&conf->device_lock);
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);
}
......
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