Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

[karo-tx-linux.git] / drivers / md / raid10.c

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index e34cd0e6247385f5827d7232ae4257c664f47c7b..970a96ef9b1841badb7b43657d46263e67a9e722 100644 (file)
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -19,6 +19,7 @@
  */
 
 #include "dm-bio-list.h"
+#include <linux/delay.h>
 #include <linux/raid/raid10.h>
 #include <linux/raid/bitmap.h>
 
@@ -789,6 +790,7 @@ static int make_request(struct request_queue *q, struct bio * bio)
        mirror_info_t *mirror;
        r10bio_t *r10_bio;
        struct bio *read_bio;
+       int cpu;
        int i;
        int chunk_sects = conf->chunk_mask + 1;
        const int rw = bio_data_dir(bio);
@@ -816,7 +818,7 @@ static int make_request(struct request_queue *q, struct bio * bio)
                /* This is a one page bio that upper layers
                 * refuse to split for us, so we need to split it.
                 */
-               bp = bio_split(bio, bio_split_pool,
+               bp = bio_split(bio,
                               chunk_sects - (bio->bi_sector & (chunk_sects - 1)) );
                if (make_request(q, &bp->bio1))
                        generic_make_request(&bp->bio1);
@@ -843,8 +845,11 @@ static int make_request(struct request_queue *q, struct bio * bio)
         */
        wait_barrier(conf);
 
-       disk_stat_inc(mddev->gendisk, ios[rw]);
-       disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bio));
+       cpu = part_stat_lock();
+       part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]);
+       part_stat_add(cpu, &mddev->gendisk->part0, sectors[rw],
+                     bio_sectors(bio));
+       part_stat_unlock();
 
        r10_bio = mempool_alloc(conf->r10bio_pool, GFP_NOIO);
 
@@ -1132,7 +1137,7 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
        if (!enough(conf))
                return -EINVAL;
 
-       if (rdev->raid_disk)
+       if (rdev->raid_disk >= 0)
                first = last = rdev->raid_disk;
 
        if (rdev->saved_raid_disk >= 0 &&
@@ -1345,9 +1350,6 @@ static void sync_request_write(mddev_t *mddev, r10bio_t *r10_bio)
                tbio->bi_size = r10_bio->sectors << 9;
                tbio->bi_idx = 0;
                tbio->bi_phys_segments = 0;
-               tbio->bi_hw_segments = 0;
-               tbio->bi_hw_front_size = 0;
-               tbio->bi_hw_back_size = 0;
                tbio->bi_flags &= ~(BIO_POOL_MASK - 1);
                tbio->bi_flags |= 1 << BIO_UPTODATE;
                tbio->bi_next = NULL;
@@ -1947,7 +1949,6 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
                bio->bi_vcnt = 0;
                bio->bi_idx = 0;
                bio->bi_phys_segments = 0;
-               bio->bi_hw_segments = 0;
                bio->bi_size = 0;
        }
 
@@ -2028,8 +2029,9 @@ static int run(mddev_t *mddev)
        int nc, fc, fo;
        sector_t stride, size;
 
-       if (mddev->chunk_size == 0) {
-               printk(KERN_ERR "md/raid10: non-zero chunk size required.\n");
+       if (mddev->chunk_size < PAGE_SIZE) {
+               printk(KERN_ERR "md/raid10: chunk size must be "
+                      "at least PAGE_SIZE(%ld).\n", PAGE_SIZE);
                return -EINVAL;
        }