diff options
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 3a95cc5e029c..46677d7d9980 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c | |||
| @@ -1240,17 +1240,24 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio) | |||
| 1240 | } | 1240 | } |
| 1241 | r1_bio->read_disk = primary; | 1241 | r1_bio->read_disk = primary; |
| 1242 | for (i=0; i<mddev->raid_disks; i++) | 1242 | for (i=0; i<mddev->raid_disks; i++) |
| 1243 | if (r1_bio->bios[i]->bi_end_io == end_sync_read && | 1243 | if (r1_bio->bios[i]->bi_end_io == end_sync_read) { |
| 1244 | test_bit(BIO_UPTODATE, &r1_bio->bios[i]->bi_flags)) { | ||
| 1245 | int j; | 1244 | int j; |
| 1246 | int vcnt = r1_bio->sectors >> (PAGE_SHIFT- 9); | 1245 | int vcnt = r1_bio->sectors >> (PAGE_SHIFT- 9); |
| 1247 | struct bio *pbio = r1_bio->bios[primary]; | 1246 | struct bio *pbio = r1_bio->bios[primary]; |
| 1248 | struct bio *sbio = r1_bio->bios[i]; | 1247 | struct bio *sbio = r1_bio->bios[i]; |
| 1249 | for (j = vcnt; j-- ; ) | 1248 | |
| 1250 | if (memcmp(page_address(pbio->bi_io_vec[j].bv_page), | 1249 | if (test_bit(BIO_UPTODATE, &sbio->bi_flags)) { |
| 1251 | page_address(sbio->bi_io_vec[j].bv_page), | 1250 | for (j = vcnt; j-- ; ) { |
| 1252 | PAGE_SIZE)) | 1251 | struct page *p, *s; |
| 1253 | break; | 1252 | p = pbio->bi_io_vec[j].bv_page; |
| 1253 | s = sbio->bi_io_vec[j].bv_page; | ||
| 1254 | if (memcmp(page_address(p), | ||
| 1255 | page_address(s), | ||
| 1256 | PAGE_SIZE)) | ||
| 1257 | break; | ||
| 1258 | } | ||
| 1259 | } else | ||
| 1260 | j = 0; | ||
| 1254 | if (j >= 0) | 1261 | if (j >= 0) |
| 1255 | mddev->resync_mismatches += r1_bio->sectors; | 1262 | mddev->resync_mismatches += r1_bio->sectors; |
| 1256 | if (j < 0 || test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) { | 1263 | if (j < 0 || test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) { |