1 files changed, 61 insertions, 67 deletions

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index c9bd2005bfd0..14dcd5142eb4 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -163,14 +163,14 @@ static void * r10buf_pool_alloc(gfp_t gfp_flags, void *data)
 		bio = bio_kmalloc(RESYNC_PAGES, gfp_flags);
 		if (!bio)
 			goto out_free_bio;
-		bio_init(bio, NULL, bio->bi_inline_vecs, RESYNC_PAGES, 0);
+		bio_init_inline(bio, NULL, RESYNC_PAGES, 0);
 		r10_bio->devs[j].bio = bio;
 		if (!conf->have_replacement)
 			continue;
 		bio = bio_kmalloc(RESYNC_PAGES, gfp_flags);
 		if (!bio)
 			goto out_free_bio;
-		bio_init(bio, NULL, bio->bi_inline_vecs, RESYNC_PAGES, 0);
+		bio_init_inline(bio, NULL, RESYNC_PAGES, 0);
 		r10_bio->devs[j].repl_bio = bio;
 	}
 	/*
@@ -322,10 +322,12 @@ static void raid_end_bio_io(struct r10bio *r10_bio)
 	struct bio *bio = r10_bio->master_bio;
 	struct r10conf *conf = r10_bio->mddev->private;
 
-	if (!test_bit(R10BIO_Uptodate, &r10_bio->state))
-		bio->bi_status = BLK_STS_IOERR;
+	if (!test_and_set_bit(R10BIO_Returned, &r10_bio->state)) {
+		if (!test_bit(R10BIO_Uptodate, &r10_bio->state))
+			bio->bi_status = BLK_STS_IOERR;
+		bio_endio(bio);
+	}
 
-	bio_endio(bio);
 	/*
 	 * Wake up any possible resync thread that waits for the device
 	 * to go idle.
@@ -1154,7 +1156,6 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio,
 	int slot = r10_bio->read_slot;
 	struct md_rdev *err_rdev = NULL;
 	gfp_t gfp = GFP_NOIO;
-	int error;
 
 	if (slot >= 0 && r10_bio->devs[slot].rdev) {
 		/*
@@ -1203,17 +1204,15 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio,
 				   rdev->bdev,
 				   (unsigned long long)r10_bio->sector);
 	if (max_sectors < bio_sectors(bio)) {
-		struct bio *split = bio_split(bio, max_sectors,
-					      gfp, &conf->bio_split);
-		if (IS_ERR(split)) {
-			error = PTR_ERR(split);
-			goto err_handle;
-		}
-		bio_chain(split, bio);
 		allow_barrier(conf);
-		submit_bio_noacct(bio);
+		bio = bio_submit_split_bioset(bio, max_sectors,
+					      &conf->bio_split);
 		wait_barrier(conf, false);
-		bio = split;
+		if (!bio) {
+			set_bit(R10BIO_Returned, &r10_bio->state);
+			goto err_handle;
+		}
+
 		r10_bio->master_bio = bio;
 		r10_bio->sectors = max_sectors;
 	}
@@ -1241,8 +1240,6 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio,
 	return;
 err_handle:
 	atomic_dec(&rdev->nr_pending);
-	bio->bi_status = errno_to_blk_status(error);
-	set_bit(R10BIO_Uptodate, &r10_bio->state);
 	raid_end_bio_io(r10_bio);
 }
 
@@ -1351,7 +1348,6 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio,
 	int i, k;
 	sector_t sectors;
 	int max_sectors;
-	int error;
 
 	if ((mddev_is_clustered(mddev) &&
 	     mddev->cluster_ops->area_resyncing(mddev, WRITE,
@@ -1465,10 +1461,8 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio,
 				 * complexity of supporting that is not worth
 				 * the benefit.
 				 */
-				if (bio->bi_opf & REQ_ATOMIC) {
-					error = -EIO;
+				if (bio->bi_opf & REQ_ATOMIC)
 					goto err_handle;
-				}
 
 				good_sectors = first_bad - dev_sector;
 				if (good_sectors < max_sectors)
@@ -1489,17 +1483,15 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio,
 		r10_bio->sectors = max_sectors;
 
 	if (r10_bio->sectors < bio_sectors(bio)) {
-		struct bio *split = bio_split(bio, r10_bio->sectors,
-					      GFP_NOIO, &conf->bio_split);
-		if (IS_ERR(split)) {
-			error = PTR_ERR(split);
-			goto err_handle;
-		}
-		bio_chain(split, bio);
 		allow_barrier(conf);
-		submit_bio_noacct(bio);
+		bio = bio_submit_split_bioset(bio, r10_bio->sectors,
+					      &conf->bio_split);
 		wait_barrier(conf, false);
-		bio = split;
+		if (!bio) {
+			set_bit(R10BIO_Returned, &r10_bio->state);
+			goto err_handle;
+		}
+
 		r10_bio->master_bio = bio;
 	}
 
@@ -1531,8 +1523,6 @@ err_handle:
 		}
 	}
 
-	bio->bi_status = errno_to_blk_status(error);
-	set_bit(R10BIO_Uptodate, &r10_bio->state);
 	raid_end_bio_io(r10_bio);
 }
 
@@ -1679,7 +1669,9 @@ static int raid10_handle_discard(struct mddev *mddev, struct bio *bio)
 			bio_endio(bio);
 			return 0;
 		}
+
 		bio_chain(split, bio);
+		trace_block_split(split, bio->bi_iter.bi_sector);
 		allow_barrier(conf);
 		/* Resend the fist split part */
 		submit_bio_noacct(split);
@@ -1694,7 +1686,9 @@ static int raid10_handle_discard(struct mddev *mddev, struct bio *bio)
 			bio_endio(bio);
 			return 0;
 		}
+
 		bio_chain(split, bio);
+		trace_block_split(split, bio->bi_iter.bi_sector);
 		allow_barrier(conf);
 		/* Resend the second split part */
 		submit_bio_noacct(bio);
@@ -2117,7 +2111,7 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev)
 	int last = conf->geo.raid_disks - 1;
 	struct raid10_info *p;
 
-	if (mddev->recovery_cp < MaxSector)
+	if (mddev->resync_offset < MaxSector)
 		/* only hot-add to in-sync arrays, as recovery is
 		 * very different from resync
 		 */
@@ -2446,15 +2440,12 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
 	 * that are active
 	 */
 	for (i = 0; i < conf->copies; i++) {
-		int d;
-
 		tbio = r10_bio->devs[i].repl_bio;
 		if (!tbio || !tbio->bi_end_io)
 			continue;
 		if (r10_bio->devs[i].bio->bi_end_io != end_sync_write
 		    && r10_bio->devs[i].bio != fbio)
 			bio_copy_data(tbio, fbio);
-		d = r10_bio->devs[i].devnum;
 		atomic_inc(&r10_bio->remaining);
 		submit_bio_noacct(tbio);
 	}
@@ -3188,7 +3179,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
 	 * of a clean array, like RAID1 does.
 	 */
 	if (mddev->bitmap == NULL &&
-	    mddev->recovery_cp == MaxSector &&
+	    mddev->resync_offset == MaxSector &&
 	    mddev->reshape_position == MaxSector &&
 	    !test_bit(MD_RECOVERY_SYNC, &mddev->recovery) &&
 	    !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery) &&
@@ -3224,15 +3215,13 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
 
 		if (mddev->curr_resync < max_sector) { /* aborted */
 			if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery))
-				mddev->bitmap_ops->end_sync(mddev,
-							    mddev->curr_resync,
-							    &sync_blocks);
+				md_bitmap_end_sync(mddev, mddev->curr_resync,
+						   &sync_blocks);
 			else for (i = 0; i < conf->geo.raid_disks; i++) {
 				sector_t sect =
 					raid10_find_virt(conf, mddev->curr_resync, i);
 
-				mddev->bitmap_ops->end_sync(mddev, sect,
-							    &sync_blocks);
+				md_bitmap_end_sync(mddev, sect, &sync_blocks);
 			}
 		} else {
 			/* completed sync */
@@ -3252,7 +3241,8 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
 			}
 			conf->fullsync = 0;
 		}
-		mddev->bitmap_ops->close_sync(mddev);
+		if (md_bitmap_enabled(mddev, false))
+			mddev->bitmap_ops->close_sync(mddev);
 		close_sync(conf);
 		*skipped = 1;
 		return sectors_skipped;
@@ -3354,9 +3344,8 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
 			 * we only need to recover the block if it is set in
 			 * the bitmap
 			 */
-			must_sync = mddev->bitmap_ops->start_sync(mddev, sect,
-								  &sync_blocks,
-								  true);
+			must_sync = md_bitmap_start_sync(mddev, sect,
+							 &sync_blocks, true);
 			if (sync_blocks < max_sync)
 				max_sync = sync_blocks;
 			if (!must_sync &&
@@ -3399,9 +3388,8 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
 				}
 			}
 
-			must_sync = mddev->bitmap_ops->start_sync(mddev, sect,
-						&sync_blocks, still_degraded);
-
+			md_bitmap_start_sync(mddev, sect, &sync_blocks,
+					     still_degraded);
 			any_working = 0;
 			for (j=0; j<conf->copies;j++) {
 				int k;
@@ -3573,13 +3561,13 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
 		 * safety reason, which ensures curr_resync_completed is
 		 * updated in bitmap_cond_end_sync.
 		 */
-		mddev->bitmap_ops->cond_end_sync(mddev, sector_nr,
+		if (md_bitmap_enabled(mddev, false))
+			mddev->bitmap_ops->cond_end_sync(mddev, sector_nr,
 					mddev_is_clustered(mddev) &&
 					(sector_nr + 2 * RESYNC_SECTORS > conf->cluster_sync_high));
 
-		if (!mddev->bitmap_ops->start_sync(mddev, sector_nr,
-						   &sync_blocks,
-						   mddev->degraded) &&
+		if (!md_bitmap_start_sync(mddev, sector_nr, &sync_blocks,
+					  mddev->degraded) &&
 		    !conf->fullsync && !test_bit(MD_RECOVERY_REQUESTED,
 						 &mddev->recovery)) {
 			/* We can skip this block */
@@ -4011,7 +3999,9 @@ static int raid10_set_queue_limits(struct mddev *mddev)
 
 	md_init_stacking_limits(&lim);
 	lim.max_write_zeroes_sectors = 0;
+	lim.max_hw_wzeroes_unmap_sectors = 0;
 	lim.io_min = mddev->chunk_sectors << 9;
+	lim.chunk_sectors = mddev->chunk_sectors;
 	lim.io_opt = lim.io_min * raid10_nr_stripes(conf);
 	lim.features |= BLK_FEAT_ATOMIC_WRITES;
 	err = mddev_stack_rdev_limits(mddev, &lim, MDDEV_STACK_INTEGRITY);
@@ -4147,7 +4137,7 @@ static int raid10_run(struct mddev *mddev)
 		disk->recovery_disabled = mddev->recovery_disabled - 1;
 	}
 
-	if (mddev->recovery_cp != MaxSector)
+	if (mddev->resync_offset != MaxSector)
 		pr_notice("md/raid10:%s: not clean -- starting background reconstruction\n",
 			  mdname(mddev));
 	pr_info("md/raid10:%s: active with %d out of %d devices\n",
@@ -4227,7 +4217,6 @@ static int raid10_resize(struct mddev *mddev, sector_t sectors)
 	 */
 	struct r10conf *conf = mddev->private;
 	sector_t oldsize, size;
-	int ret;
 
 	if (mddev->reshape_position != MaxSector)
 		return -EBUSY;
@@ -4241,14 +4230,17 @@ static int raid10_resize(struct mddev *mddev, sector_t sectors)
 	    mddev->array_sectors > size)
 		return -EINVAL;
 
-	ret = mddev->bitmap_ops->resize(mddev, size, 0, false);
-	if (ret)
-		return ret;
+	if (md_bitmap_enabled(mddev, false)) {
+		int ret = mddev->bitmap_ops->resize(mddev, size, 0);
+
+		if (ret)
+			return ret;
+	}
 
 	md_set_array_sectors(mddev, size);
 	if (sectors > mddev->dev_sectors &&
-	    mddev->recovery_cp > oldsize) {
-		mddev->recovery_cp = oldsize;
+	    mddev->resync_offset > oldsize) {
+		mddev->resync_offset = oldsize;
 		set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
 	}
 	calc_sectors(conf, sectors);
@@ -4277,7 +4269,7 @@ static void *raid10_takeover_raid0(struct mddev *mddev, sector_t size, int devs)
 	mddev->delta_disks = mddev->raid_disks;
 	mddev->raid_disks *= 2;
 	/* make sure it will be not marked as dirty */
-	mddev->recovery_cp = MaxSector;
+	mddev->resync_offset = MaxSector;
 	mddev->dev_sectors = size;
 
 	conf = setup_conf(mddev);
@@ -4509,8 +4501,9 @@ static int raid10_start_reshape(struct mddev *mddev)
 		oldsize = raid10_size(mddev, 0, 0);
 		newsize = raid10_size(mddev, 0, conf->geo.raid_disks);
 
-		if (!mddev_is_clustered(mddev)) {
-			ret = mddev->bitmap_ops->resize(mddev, newsize, 0, false);
+		if (!mddev_is_clustered(mddev) &&
+		    md_bitmap_enabled(mddev, false)) {
+			ret = mddev->bitmap_ops->resize(mddev, newsize, 0);
 			if (ret)
 				goto abort;
 			else
@@ -4532,13 +4525,14 @@ static int raid10_start_reshape(struct mddev *mddev)
 			    MD_FEATURE_RESHAPE_ACTIVE)) || (oldsize == newsize))
 			goto out;
 
-		ret = mddev->bitmap_ops->resize(mddev, newsize, 0, false);
+		/* cluster can't be setup without bitmap */
+		ret = mddev->bitmap_ops->resize(mddev, newsize, 0);
 		if (ret)
 			goto abort;
 
 		ret = mddev->cluster_ops->resize_bitmaps(mddev, newsize, oldsize);
 		if (ret) {
-			mddev->bitmap_ops->resize(mddev, oldsize, 0, false);
+			mddev->bitmap_ops->resize(mddev, oldsize, 0);
 			goto abort;
 		}
 	}
@@ -5089,8 +5083,8 @@ static void raid10_finish_reshape(struct mddev *mddev)
 		return;
 
 	if (mddev->delta_disks > 0) {
-		if (mddev->recovery_cp > mddev->resync_max_sectors) {
-			mddev->recovery_cp = mddev->resync_max_sectors;
+		if (mddev->resync_offset > mddev->resync_max_sectors) {
+			mddev->resync_offset = mddev->resync_max_sectors;
 			set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
 		}
 		mddev->resync_max_sectors = mddev->array_sectors;