diff options
| -rw-r--r-- | drivers/md/dm-ioctl.c | 21 | ||||
| -rw-r--r-- | drivers/md/dm-table.c | 40 | ||||
| -rw-r--r-- | drivers/md/dm.c | 15 |
3 files changed, 76 insertions, 0 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index f01096549a93..823ceba6efa8 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1047,6 +1047,19 @@ static int populate_table(struct dm_table *table, return dm_table_complete(table); } +static int table_prealloc_integrity(struct dm_table *t, + struct mapped_device *md) +{ + struct list_head *devices = dm_table_get_devices(t); + struct dm_dev_internal *dd; + + list_for_each_entry(dd, devices, list) + if (bdev_get_integrity(dd->dm_dev.bdev)) + return blk_integrity_register(dm_disk(md), NULL); + + return 0; +} + static int table_load(struct dm_ioctl *param, size_t param_size) { int r; @@ -1068,6 +1081,14 @@ static int table_load(struct dm_ioctl *param, size_t param_size) goto out; } + r = table_prealloc_integrity(t, md); + if (r) { + DMERR("%s: could not register integrity profile.", + dm_device_name(md)); + dm_table_destroy(t); + goto out; + } + down_write(&_hash_lock); hc = dm_get_mdptr(md); if (!hc || hc->md != md) { diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index e8361b191b9b..02d0b489fad6 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -879,6 +879,45 @@ struct dm_target *dm_table_find_target(struct dm_table *t, sector_t sector) return &t->targets[(KEYS_PER_NODE * n) + k]; } +/* + * Set the integrity profile for this device if all devices used have + * matching profiles. + */ +static void dm_table_set_integrity(struct dm_table *t) +{ + struct list_head *devices = dm_table_get_devices(t); + struct dm_dev_internal *prev = NULL, *dd = NULL; + + if (!blk_get_integrity(dm_disk(t->md))) + return; + + list_for_each_entry(dd, devices, list) { + if (prev && + blk_integrity_compare(prev->dm_dev.bdev->bd_disk, + dd->dm_dev.bdev->bd_disk) < 0) { + DMWARN("%s: integrity not set: %s and %s mismatch", + dm_device_name(t->md), + prev->dm_dev.bdev->bd_disk->disk_name, + dd->dm_dev.bdev->bd_disk->disk_name); + goto no_integrity; + } + prev = dd; + } + + if (!prev || !bdev_get_integrity(prev->dm_dev.bdev)) + goto no_integrity; + + blk_integrity_register(dm_disk(t->md), + bdev_get_integrity(prev->dm_dev.bdev)); + + return; + +no_integrity: + blk_integrity_register(dm_disk(t->md), NULL); + + return; +} + void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q) { /* @@ -899,6 +938,7 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q) else queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, q); + dm_table_set_integrity(t); } unsigned int dm_table_get_num_targets(struct dm_table *t) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 788ba96a6256..25d86e2c01f2 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -700,6 +700,12 @@ static struct bio *split_bvec(struct bio *bio, sector_t sector, clone->bi_io_vec->bv_len = clone->bi_size; clone->bi_flags |= 1 << BIO_CLONED; + if (bio_integrity(bio)) { + bio_integrity_clone(clone, bio, GFP_NOIO); + bio_integrity_trim(clone, + bio_sector_offset(bio, idx, offset), len); + } + return clone; } @@ -721,6 +727,14 @@ static struct bio *clone_bio(struct bio *bio, sector_t sector, clone->bi_size = to_bytes(len); clone->bi_flags &= ~(1 << BIO_SEG_VALID); + if (bio_integrity(bio)) { + bio_integrity_clone(clone, bio, GFP_NOIO); + + if (idx != bio->bi_idx || clone->bi_size < bio->bi_size) + bio_integrity_trim(clone, + bio_sector_offset(bio, idx, 0), len); + } + return clone; } @@ -1193,6 +1207,7 @@ static void free_dev(struct mapped_device *md) mempool_destroy(md->tio_pool); mempool_destroy(md->io_pool); bioset_free(md->bs); + blk_integrity_unregister(md->disk); del_gendisk(md->disk); free_minor(minor); |
