Merge tag 'md/4.0-fixes' of git://neil.brown.name/md

[firefly-linux-kernel-4.4.55.git] / drivers / md / raid0.c

diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index ba6b85de96d209635e640efb19a6569bfd9e8a38..a13f738a7b39f60fa340dec21612cf25b99570a7 100644 (file)
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -25,17 +25,13 @@
 #include "raid0.h"
 #include "raid5.h"
 
-static int raid0_congested(void *data, int bits)
+static int raid0_congested(struct mddev *mddev, int bits)
 {
-       struct mddev *mddev = data;
        struct r0conf *conf = mddev->private;
        struct md_rdev **devlist = conf->devlist;
        int raid_disks = conf->strip_zone[0].nb_dev;
        int i, ret = 0;
 
-       if (mddev_congested(mddev, bits))
-               return 1;
-
        for (i = 0; i < raid_disks && !ret ; i++) {
                struct request_queue *q = bdev_get_queue(devlist[i]->bdev);
 
@@ -263,8 +259,6 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
                         mdname(mddev),
                         (unsigned long long)smallest->sectors);
        }
-       mddev->queue->backing_dev_info.congested_fn = raid0_congested;
-       mddev->queue->backing_dev_info.congested_data = mddev;
 
        /*
         * now since we have the hard sector sizes, we can make sure
@@ -356,17 +350,16 @@ static struct md_rdev *map_sector(struct mddev *mddev, struct strip_zone *zone,
 
 /**
  *     raid0_mergeable_bvec -- tell bio layer if two requests can be merged
- *     @q: request queue
+ *     @mddev: the md device
  *     @bvm: properties of new bio
  *     @biovec: the request that could be merged to it.
  *
  *     Return amount of bytes we can accept at this offset
  */
-static int raid0_mergeable_bvec(struct request_queue *q,
+static int raid0_mergeable_bvec(struct mddev *mddev,
                                struct bvec_merge_data *bvm,
                                struct bio_vec *biovec)
 {
-       struct mddev *mddev = q->queuedata;
        struct r0conf *conf = mddev->private;
        sector_t sector = bvm->bi_sector + get_start_sect(bvm->bi_bdev);
        sector_t sector_offset = sector;
@@ -422,7 +415,7 @@ static sector_t raid0_size(struct mddev *mddev, sector_t sectors, int raid_disks
        return array_sectors;
 }
 
-static int raid0_stop(struct mddev *mddev);
+static void raid0_free(struct mddev *mddev, void *priv);
 
 static int raid0_run(struct mddev *mddev)
 {
@@ -471,26 +464,22 @@ static int raid0_run(struct mddev *mddev)
                        mddev->queue->backing_dev_info.ra_pages = 2* stripe;
        }
 
-       blk_queue_merge_bvec(mddev->queue, raid0_mergeable_bvec);
        dump_zones(mddev);
 
        ret = md_integrity_register(mddev);
        if (ret)
-               raid0_stop(mddev);
+               raid0_free(mddev, conf);
 
        return ret;
 }
 
-static int raid0_stop(struct mddev *mddev)
+static void raid0_free(struct mddev *mddev, void *priv)
 {
-       struct r0conf *conf = mddev->private;
+       struct r0conf *conf = priv;
 
-       blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
        kfree(conf->strip_zone);
        kfree(conf->devlist);
        kfree(conf);
-       mddev->private = NULL;
-       return 0;
 }
 
 /*
@@ -724,11 +713,13 @@ static struct md_personality raid0_personality=
        .owner          = THIS_MODULE,
        .make_request   = raid0_make_request,
        .run            = raid0_run,
-       .stop           = raid0_stop,
+       .free           = raid0_free,
        .status         = raid0_status,
        .size           = raid0_size,
        .takeover       = raid0_takeover,
        .quiesce        = raid0_quiesce,
+       .congested      = raid0_congested,
+       .mergeable_bvec = raid0_mergeable_bvec,
 };
 
 static int __init raid0_init (void)