Merge branch 'omap-pool'

[linux-2.6-omap-h63xx.git] / drivers / md / raid10.c

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 7301631abe0453a4791dec55ba0eff84912876c3..e293d92641acc2b61c5767d3b343702fd65a509b 100644 (file)
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -18,10 +18,13 @@
  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#include "dm-bio-list.h"
 #include <linux/delay.h>
-#include <linux/raid/raid10.h>
-#include <linux/raid/bitmap.h>
+#include <linux/blkdev.h>
+#include <linux/seq_file.h>
+#include "md.h"
+#include "dm-bio-list.h"
+#include "raid10.h"
+#include "bitmap.h"
 
 /*
  * RAID10 provides a combination of RAID0 and RAID1 functionality.
@@ -1695,7 +1698,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
                        return 0;
 
  skipped:
-       max_sector = mddev->size << 1;
+       max_sector = mddev->dev_sectors;
        if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery))
                max_sector = mddev->resync_max_sectors;
        if (sector_nr >= max_sector) {
@@ -2020,6 +2023,25 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
        goto skipped;
 }
 
+static sector_t
+raid10_size(mddev_t *mddev, sector_t sectors, int raid_disks)
+{
+       sector_t size;
+       conf_t *conf = mddev_to_conf(mddev);
+
+       if (!raid_disks)
+               raid_disks = mddev->raid_disks;
+       if (!sectors)
+               sectors = mddev->dev_sectors;
+
+       size = sectors >> conf->chunk_shift;
+       sector_div(size, conf->far_copies);
+       size = size * raid_disks;
+       sector_div(size, conf->near_copies);
+
+       return size << conf->chunk_shift;
+}
+
 static int run(mddev_t *mddev)
 {
        conf_t *conf;
@@ -2076,7 +2098,7 @@ static int run(mddev_t *mddev)
        conf->far_offset = fo;
        conf->chunk_mask = (sector_t)(mddev->chunk_size>>9)-1;
        conf->chunk_shift = ffz(~mddev->chunk_size) - 9;
-       size = mddev->size >> (conf->chunk_shift-1);
+       size = mddev->dev_sectors >> conf->chunk_shift;
        sector_div(size, fc);
        size = size * conf->raid_disks;
        sector_div(size, nc);
@@ -2089,7 +2111,7 @@ static int run(mddev_t *mddev)
         */
        stride += conf->raid_disks - 1;
        sector_div(stride, conf->raid_disks);
-       mddev->size = stride  << (conf->chunk_shift-1);
+       mddev->dev_sectors = stride << conf->chunk_shift;
 
        if (fo)
                stride = 1;
@@ -2171,8 +2193,8 @@ static int run(mddev_t *mddev)
        /*
         * Ok, everything is just fine now
         */
-       mddev->array_sectors = size << conf->chunk_shift;
-       mddev->resync_max_sectors = size << conf->chunk_shift;
+       md_set_array_sectors(mddev, raid10_size(mddev, 0, 0));
+       mddev->resync_max_sectors = raid10_size(mddev, 0, 0);
 
        mddev->queue->unplug_fn = raid10_unplug;
        mddev->queue->backing_dev_info.congested_fn = raid10_congested;
@@ -2208,6 +2230,9 @@ static int stop(mddev_t *mddev)
 {
        conf_t *conf = mddev_to_conf(mddev);
 
+       raise_barrier(conf, 0);
+       lower_barrier(conf);
+
        md_unregister_thread(mddev->thread);
        mddev->thread = NULL;
        blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
@@ -2255,6 +2280,7 @@ static struct mdk_personality raid10_personality =
        .spare_active   = raid10_spare_active,
        .sync_request   = sync_request,
        .quiesce        = raid10_quiesce,
+       .size           = raid10_size,
 };
 
 static int __init raid_init(void)