Merge commit '900cfa46191a7d87cf1891924cb90499287fd235'; branches 'timers/nohz',...

[pandora-kernel.git] / drivers / md / raid1.c

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index ac409b7..c610b94 100644 (file)
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -773,7 +773,7 @@ static int make_request(struct request_queue *q, struct bio * bio)
        r1bio_t *r1_bio;
        struct bio *read_bio;
        int i, targets = 0, disks;
-       struct bitmap *bitmap = mddev->bitmap;
+       struct bitmap *bitmap;
        unsigned long flags;
        struct bio_list bl;
        struct page **behind_pages = NULL;
@@ -802,6 +802,8 @@ static int make_request(struct request_queue *q, struct bio * bio)
 
        wait_barrier(conf);
 
+       bitmap = mddev->bitmap;
+
        disk_stat_inc(mddev->gendisk, ios[rw]);
        disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bio));
 
@@ -1025,7 +1027,7 @@ static void error(mddev_t *mddev, mdk_rdev_t *rdev)
                /*
                 * if recovery is running, make sure it aborts.
                 */
-               set_bit(MD_RECOVERY_ERR, &mddev->recovery);
+               set_bit(MD_RECOVERY_INTR, &mddev->recovery);
        } else
                set_bit(Faulty, &rdev->flags);
        set_bit(MD_CHANGE_DEVS, &mddev->flags);
@@ -1146,6 +1148,14 @@ static int raid1_remove_disk(mddev_t *mddev, int number)
                        err = -EBUSY;
                        goto abort;
                }
+               /* Only remove non-faulty devices is recovery
+                * is not possible.
+                */
+               if (!test_bit(Faulty, &rdev->flags) &&
+                   mddev->degraded < conf->raid_disks) {
+                       err = -EBUSY;
+                       goto abort;
+               }
                p->rdev = NULL;
                synchronize_rcu();
                if (atomic_read(&rdev->nr_pending)) {
@@ -1282,6 +1292,7 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
                                        rdev_dec_pending(conf->mirrors[i].rdev, mddev);
                                } else {
                                        /* fixup the bio for reuse */
+                                       int size;
                                        sbio->bi_vcnt = vcnt;
                                        sbio->bi_size = r1_bio->sectors << 9;
                                        sbio->bi_idx = 0;
@@ -1295,10 +1306,20 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
                                        sbio->bi_sector = r1_bio->sector +
                                                conf->mirrors[i].rdev->data_offset;
                                        sbio->bi_bdev = conf->mirrors[i].rdev->bdev;
-                                       for (j = 0; j < vcnt ; j++)
-                                               memcpy(page_address(sbio->bi_io_vec[j].bv_page),
+                                       size = sbio->bi_size;
+                                       for (j = 0; j < vcnt ; j++) {
+                                               struct bio_vec *bi;
+                                               bi = &sbio->bi_io_vec[j];
+                                               bi->bv_offset = 0;
+                                               if (size > PAGE_SIZE)
+                                                       bi->bv_len = PAGE_SIZE;
+                                               else
+                                                       bi->bv_len = size;
+                                               size -= PAGE_SIZE;
+                                               memcpy(page_address(bi->bv_page),
                                                       page_address(pbio->bi_io_vec[j].bv_page),
                                                       PAGE_SIZE);
+                                       }
 
                                }
                        }