Merging upstream version 6.8.9.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

17 files changed, 124 insertions, 149 deletions

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 37eff1c974..b1b47d88f5 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -384,7 +384,8 @@ aoeblk_gdalloc(void *vp)
 	WARN_ON(d->flags & DEVFL_TKILL);
 	WARN_ON(d->gd);
 	WARN_ON(d->flags & DEVFL_UP);
-	blk_queue_max_hw_sectors(gd->queue, BLK_DEF_MAX_SECTORS);
+	/* random number picked from the history block max_sectors cap */
+	blk_queue_max_hw_sectors(gd->queue, 2560u);
 	blk_queue_io_opt(gd->queue, SZ_2M);
 	d->bufpool = mp;
 	d->blkq = gd->queue;
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 64b3a1c76f..742b2908ff 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -838,8 +838,8 @@ static bool plausible_request_size(int size)
 }
 
 /* clear the bit corresponding to the piece of storage in question:
- * size byte of data starting from sector.  Only clear a bits of the affected
- * one ore more _aligned_ BM_BLOCK_SIZE blocks.
+ * size byte of data starting from sector.  Only clear bits of the affected
+ * one or more _aligned_ BM_BLOCK_SIZE blocks.
  *
  * called by worker on C_SYNC_TARGET and receiver on SyncSource.
  *
@@ -957,7 +957,9 @@ static int _is_in_al(struct drbd_device *device, unsigned int enr)
  * @device:	DRBD device.
  * @sector:	The sector number.
  *
- * This functions sleeps on al_wait. Returns 0 on success, -EINTR if interrupted.
+ * This functions sleeps on al_wait.
+ *
+ * Returns: %0 on success, -EINTR if interrupted.
  */
 int drbd_rs_begin_io(struct drbd_device *device, sector_t sector)
 {
@@ -1004,11 +1006,13 @@ retry:
 
 /**
  * drbd_try_rs_begin_io() - Gets an extent in the resync LRU cache, does not sleep
- * @device:	DRBD device.
+ * @peer_device: DRBD device.
  * @sector:	The sector number.
  *
  * Gets an extent in the resync LRU cache, sets it to BME_NO_WRITES, then
- * tries to set it to BME_LOCKED. Returns 0 upon success, and -EAGAIN
+ * tries to set it to BME_LOCKED.
+ *
+ * Returns: %0 upon success, and -EAGAIN
  * if there is still application IO going on in this area.
  */
 int drbd_try_rs_begin_io(struct drbd_peer_device *peer_device, sector_t sector)
@@ -1190,7 +1194,7 @@ void drbd_rs_cancel_all(struct drbd_device *device)
  * drbd_rs_del_all() - Gracefully remove all extents from the resync LRU
  * @device:	DRBD device.
  *
- * Returns 0 upon success, -EAGAIN if at least one reference count was
+ * Returns: %0 upon success, -EAGAIN if at least one reference count was
  * not zero.
  */
 int drbd_rs_del_all(struct drbd_device *device)
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 11114a5d9e..d0e41d52d6 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3079,7 +3079,7 @@ static void raw_cmd_free(struct floppy_raw_cmd **ptr)
 	}
 }
 
-#define MAX_LEN (1UL << MAX_ORDER << PAGE_SHIFT)
+#define MAX_LEN (1UL << MAX_PAGE_ORDER << PAGE_SHIFT)
 
 static int raw_cmd_copyin(int cmd, void __user *param,
 				 struct floppy_raw_cmd **rcmd)
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 552f56a84a..f8145499da 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -243,9 +243,7 @@ static int lo_write_bvec(struct file *file, struct bio_vec *bvec, loff_t *ppos)
 
 	iov_iter_bvec(&i, ITER_SOURCE, bvec, 1, bvec->bv_len);
 
-	file_start_write(file);
 	bw = vfs_iter_write(file, &i, ppos, 0);
-	file_end_write(file);
 
 	if (likely(bw ==  bvec->bv_len))
 		return 0;
@@ -1301,8 +1299,6 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
 		loop_set_size(lo, new_size);
 	}
 
-	loop_config_discard(lo);
-
 	/* update dio if lo_offset or transfer is changed */
 	__loop_update_dio(lo, lo->use_dio);
 
@@ -2036,7 +2032,8 @@ static int loop_add(int i)
 	}
 	lo->lo_queue = lo->lo_disk->queue;
 
-	blk_queue_max_hw_sectors(lo->lo_queue, BLK_DEF_MAX_SECTORS);
+	/* random number picked from the history block max_sectors cap */
+	blk_queue_max_hw_sectors(lo->lo_queue, 2560u);
 
 	/*
 	 * By default, we do buffer IO, so it doesn't make sense to enable
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index df738eab02..b7c332528e 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -334,10 +334,8 @@ static int nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
 	if (!nbd->pid)
 		return 0;
 
-	if (nbd->config->flags & NBD_FLAG_SEND_TRIM) {
-		nbd->disk->queue->limits.discard_granularity = blksize;
+	if (nbd->config->flags & NBD_FLAG_SEND_TRIM)
 		blk_queue_max_discard_sectors(nbd->disk->queue, UINT_MAX);
-	}
 	blk_queue_logical_block_size(nbd->disk->queue, blksize);
 	blk_queue_physical_block_size(nbd->disk->queue, blksize);
 
@@ -1353,7 +1351,6 @@ static void nbd_config_put(struct nbd_device *nbd)
 		nbd->config = NULL;
 
 		nbd->tag_set.timeout = 0;
-		nbd->disk->queue->limits.discard_granularity = 0;
 		blk_queue_max_discard_sectors(nbd->disk->queue, 0);
 
 		mutex_unlock(&nbd->config_lock);
@@ -1846,7 +1843,6 @@ static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 	 * Tell the block layer that we are not a rotational device
 	 */
 	blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
-	disk->queue->limits.discard_granularity = 0;
 	blk_queue_max_discard_sectors(disk->queue, 0);
 	blk_queue_max_segment_size(disk->queue, UINT_MAX);
 	blk_queue_max_segments(disk->queue, USHRT_MAX);
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index 13ed446b5e..36755f263e 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1840,7 +1840,7 @@ static void null_del_dev(struct nullb *nullb)
 
 	dev = nullb->dev;
 
-	ida_simple_remove(&nullb_indexes, nullb->index);
+	ida_free(&nullb_indexes, nullb->index);
 
 	list_del_init(&nullb->list);
 
@@ -1880,7 +1880,6 @@ static void null_config_discard(struct nullb *nullb)
 		return;
 	}
 
-	nullb->q->limits.discard_granularity = nullb->dev->blocksize;
 	blk_queue_max_discard_sectors(nullb->q, UINT_MAX >> 9);
 }
 
@@ -2175,7 +2174,7 @@ static int null_add_dev(struct nullb_device *dev)
 	blk_queue_flag_set(QUEUE_FLAG_NONROT, nullb->q);
 
 	mutex_lock(&lock);
-	rv = ida_simple_get(&nullb_indexes, 0, 0, GFP_KERNEL);
+	rv = ida_alloc(&nullb_indexes, GFP_KERNEL);
 	if (rv < 0) {
 		mutex_unlock(&lock);
 		goto out_cleanup_zone;
diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c
index 55c5b48bc2..6f5e099486 100644
--- a/drivers/block/null_blk/zoned.c
+++ b/drivers/block/null_blk/zoned.c
@@ -159,7 +159,7 @@ int null_register_zoned_dev(struct nullb *nullb)
 	struct nullb_device *dev = nullb->dev;
 	struct request_queue *q = nullb->q;
 
-	disk_set_zoned(nullb->disk, BLK_ZONED_HM);
+	disk_set_zoned(nullb->disk);
 	blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, q);
 	blk_queue_required_elevator_features(q, ELEVATOR_F_ZBD_SEQ_WRITE);
 	blk_queue_chunk_sectors(q, dev->zone_size_sects);
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 1e2596c5ef..12b5d53ec8 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -5332,7 +5332,7 @@ static void rbd_dev_release(struct device *dev)
 
 	if (need_put) {
 		destroy_workqueue(rbd_dev->task_wq);
-		ida_simple_remove(&rbd_dev_id_ida, rbd_dev->dev_id);
+		ida_free(&rbd_dev_id_ida, rbd_dev->dev_id);
 	}
 
 	rbd_dev_free(rbd_dev);
@@ -5408,9 +5408,9 @@ static struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
 		return NULL;
 
 	/* get an id and fill in device name */
-	rbd_dev->dev_id = ida_simple_get(&rbd_dev_id_ida, 0,
-					 minor_to_rbd_dev_id(1 << MINORBITS),
-					 GFP_KERNEL);
+	rbd_dev->dev_id = ida_alloc_max(&rbd_dev_id_ida,
+					minor_to_rbd_dev_id(1 << MINORBITS) - 1,
+					GFP_KERNEL);
 	if (rbd_dev->dev_id < 0)
 		goto fail_rbd_dev;
 
@@ -5431,7 +5431,7 @@ static struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
 	return rbd_dev;
 
 fail_dev_id:
-	ida_simple_remove(&rbd_dev_id_ida, rbd_dev->dev_id);
+	ida_free(&rbd_dev_id_ida, rbd_dev->dev_id);
 fail_rbd_dev:
 	rbd_dev_free(rbd_dev);
 	return NULL;
diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c
index b0550b6864..4044c369d2 100644
--- a/drivers/block/rnbd/rnbd-clt.c
+++ b/drivers/block/rnbd/rnbd-clt.c
@@ -1006,10 +1006,10 @@ static int rnbd_client_xfer_request(struct rnbd_clt_dev *dev,
 	msg.prio	= cpu_to_le16(req_get_ioprio(rq));
 
 	/*
-	 * We only support discards with single segment for now.
+	 * We only support discards/WRITE_ZEROES with single segment for now.
 	 * See queue limits.
 	 */
-	if (req_op(rq) != REQ_OP_DISCARD)
+	if ((req_op(rq) != REQ_OP_DISCARD) && (req_op(rq) != REQ_OP_WRITE_ZEROES))
 		sg_cnt = blk_rq_map_sg(dev->queue, rq, iu->sgt.sgl);
 
 	if (sg_cnt == 0)
@@ -1362,6 +1362,8 @@ static void setup_request_queue(struct rnbd_clt_dev *dev,
 	blk_queue_write_cache(dev->queue,
 			      !!(rsp->cache_policy & RNBD_WRITEBACK),
 			      !!(rsp->cache_policy & RNBD_FUA));
+	blk_queue_max_write_zeroes_sectors(dev->queue,
+					   le32_to_cpu(rsp->max_write_zeroes_sectors));
 }
 
 static int rnbd_clt_setup_gen_disk(struct rnbd_clt_dev *dev,
@@ -1567,8 +1569,8 @@ struct rnbd_clt_dev *rnbd_clt_map_device(const char *sessname,
 
 	dev = init_dev(sess, access_mode, pathname, nr_poll_queues);
 	if (IS_ERR(dev)) {
-		pr_err("map_device: failed to map device '%s' from session %s, can't initialize device, err: %ld\n",
-		       pathname, sess->sessname, PTR_ERR(dev));
+		pr_err("map_device: failed to map device '%s' from session %s, can't initialize device, err: %pe\n",
+		       pathname, sess->sessname, dev);
 		ret = PTR_ERR(dev);
 		goto put_sess;
 	}
@@ -1626,10 +1628,11 @@ struct rnbd_clt_dev *rnbd_clt_map_device(const char *sessname,
 	}
 
 	rnbd_clt_info(dev,
-		       "map_device: Device mapped as %s (nsectors: %llu, logical_block_size: %d, physical_block_size: %d, max_discard_sectors: %d, discard_granularity: %d, discard_alignment: %d, secure_discard: %d, max_segments: %d, max_hw_sectors: %d, wc: %d, fua: %d)\n",
+		       "map_device: Device mapped as %s (nsectors: %llu, logical_block_size: %d, physical_block_size: %d, max_write_zeroes_sectors: %d, max_discard_sectors: %d, discard_granularity: %d, discard_alignment: %d, secure_discard: %d, max_segments: %d, max_hw_sectors: %d, wc: %d, fua: %d)\n",
 		       dev->gd->disk_name, le64_to_cpu(rsp->nsectors),
 		       le16_to_cpu(rsp->logical_block_size),
 		       le16_to_cpu(rsp->physical_block_size),
+		       le32_to_cpu(rsp->max_write_zeroes_sectors),
 		       le32_to_cpu(rsp->max_discard_sectors),
 		       le32_to_cpu(rsp->discard_granularity),
 		       le32_to_cpu(rsp->discard_alignment),
diff --git a/drivers/block/rnbd/rnbd-proto.h b/drivers/block/rnbd/rnbd-proto.h
index e32f8f2c86..f35be51d21 100644
--- a/drivers/block/rnbd/rnbd-proto.h
+++ b/drivers/block/rnbd/rnbd-proto.h
@@ -128,7 +128,7 @@ enum rnbd_cache_policy {
  * @device_id:		device_id on server side to identify the device
  * @nsectors:		number of sectors in the usual 512b unit
  * @max_hw_sectors:	max hardware sectors in the usual 512b unit
- * @max_write_same_sectors: max sectors for WRITE SAME in the 512b unit
+ * @max_write_zeroes_sectors: max sectors for WRITE ZEROES in the 512b unit
  * @max_discard_sectors: max. sectors that can be discarded at once in 512b
  * unit.
  * @discard_granularity: size of the internal discard allocation unit in bytes
@@ -145,7 +145,7 @@ struct rnbd_msg_open_rsp {
 	__le32			device_id;
 	__le64			nsectors;
 	__le32			max_hw_sectors;
-	__le32			max_write_same_sectors;
+	__le32			max_write_zeroes_sectors;
 	__le32			max_discard_sectors;
 	__le32			discard_granularity;
 	__le32			discard_alignment;
@@ -186,7 +186,7 @@ struct rnbd_msg_io {
  * @RNBD_OP_FLUSH:	     flush the volatile write cache
  * @RNBD_OP_DISCARD:        discard sectors
  * @RNBD_OP_SECURE_ERASE:   securely erase sectors
- * @RNBD_OP_WRITE_SAME:     write the same sectors many times
+ * @RNBD_OP_WRITE_ZEROES:   write zeroes sectors
 
  * @RNBD_F_SYNC:	     request is sync (sync write or read)
  * @RNBD_F_FUA:             forced unit access
@@ -199,7 +199,7 @@ enum rnbd_io_flags {
 	RNBD_OP_FLUSH		= 2,
 	RNBD_OP_DISCARD	= 3,
 	RNBD_OP_SECURE_ERASE	= 4,
-	RNBD_OP_WRITE_SAME	= 5,
+	RNBD_OP_WRITE_ZEROES	= 5,
 
 	/* Flags */
 	RNBD_F_SYNC  = 1<<(RNBD_OP_BITS + 0),
@@ -236,6 +236,9 @@ static inline blk_opf_t rnbd_to_bio_flags(u32 rnbd_opf)
 	case RNBD_OP_SECURE_ERASE:
 		bio_opf = REQ_OP_SECURE_ERASE;
 		break;
+	case RNBD_OP_WRITE_ZEROES:
+		bio_opf = REQ_OP_WRITE_ZEROES;
+		break;
 	default:
 		WARN(1, "Unknown RNBD type: %d (flags %d)\n",
 		     rnbd_op(rnbd_opf), rnbd_opf);
@@ -268,6 +271,9 @@ static inline u32 rq_to_rnbd_flags(struct request *rq)
 	case REQ_OP_SECURE_ERASE:
 		rnbd_opf = RNBD_OP_SECURE_ERASE;
 		break;
+	case REQ_OP_WRITE_ZEROES:
+		rnbd_opf = RNBD_OP_WRITE_ZEROES;
+		break;
 	case REQ_OP_FLUSH:
 		rnbd_opf = RNBD_OP_FLUSH;
 		break;
diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c
index ab78eab97d..3a0d5dcec6 100644
--- a/drivers/block/rnbd/rnbd-srv.c
+++ b/drivers/block/rnbd/rnbd-srv.c
@@ -136,8 +136,8 @@ static int process_rdma(struct rnbd_srv_session *srv_sess,
 
 	sess_dev = rnbd_get_sess_dev(dev_id, srv_sess);
 	if (IS_ERR(sess_dev)) {
-		pr_err_ratelimited("Got I/O request on session %s for unknown device id %d\n",
-				   srv_sess->sessname, dev_id);
+		pr_err_ratelimited("Got I/O request on session %s for unknown device id %d: %pe\n",
+				   srv_sess->sessname, dev_id, sess_dev);
 		err = -ENOTCONN;
 		goto err;
 	}
@@ -544,7 +544,8 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp,
 	rsp->max_segments = cpu_to_le16(bdev_max_segments(bdev));
 	rsp->max_hw_sectors =
 		cpu_to_le32(queue_max_hw_sectors(bdev_get_queue(bdev)));
-	rsp->max_write_same_sectors = 0;
+	rsp->max_write_zeroes_sectors =
+		cpu_to_le32(bdev_write_zeroes_sectors(bdev));
 	rsp->max_discard_sectors = cpu_to_le32(bdev_max_discard_sectors(bdev));
 	rsp->discard_granularity = cpu_to_le32(bdev_discard_granularity(bdev));
 	rsp->discard_alignment = cpu_to_le32(bdev_discard_alignment(bdev));
@@ -710,24 +711,24 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess,
 	full_path = rnbd_srv_get_full_path(srv_sess, open_msg->dev_name);
 	if (IS_ERR(full_path)) {
 		ret = PTR_ERR(full_path);
-		pr_err("Opening device '%s' for client %s failed, failed to get device full path, err: %d\n",
-		       open_msg->dev_name, srv_sess->sessname, ret);
+		pr_err("Opening device '%s' for client %s failed, failed to get device full path, err: %pe\n",
+		       open_msg->dev_name, srv_sess->sessname, full_path);
 		goto reject;
 	}
 
 	bdev_handle = bdev_open_by_path(full_path, open_flags, NULL, NULL);
 	if (IS_ERR(bdev_handle)) {
 		ret = PTR_ERR(bdev_handle);
-		pr_err("Opening device '%s' on session %s failed, failed to open the block device, err: %d\n",
-		       full_path, srv_sess->sessname, ret);
+		pr_err("Opening device '%s' on session %s failed, failed to open the block device, err: %pe\n",
+		       full_path, srv_sess->sessname, bdev_handle);
 		goto free_path;
 	}
 
 	srv_dev = rnbd_srv_get_or_create_srv_dev(bdev_handle->bdev, srv_sess,
 						  open_msg->access_mode);
 	if (IS_ERR(srv_dev)) {
-		pr_err("Opening device '%s' on session %s failed, creating srv_dev failed, err: %ld\n",
-		       full_path, srv_sess->sessname, PTR_ERR(srv_dev));
+		pr_err("Opening device '%s' on session %s failed, creating srv_dev failed, err: %pe\n",
+		       full_path, srv_sess->sessname, srv_dev);
 		ret = PTR_ERR(srv_dev);
 		goto blkdev_put;
 	}
@@ -737,8 +738,8 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess,
 				open_msg->access_mode == RNBD_ACCESS_RO,
 				srv_dev);
 	if (IS_ERR(srv_sess_dev)) {
-		pr_err("Opening device '%s' on session %s failed, creating sess_dev failed, err: %ld\n",
-		       full_path, srv_sess->sessname, PTR_ERR(srv_sess_dev));
+		pr_err("Opening device '%s' on session %s failed, creating sess_dev failed, err: %pe\n",
+		       full_path, srv_sess->sessname, srv_sess_dev);
 		ret = PTR_ERR(srv_sess_dev);
 		goto srv_dev_put;
 	}
@@ -819,7 +820,7 @@ static int __init rnbd_srv_init_module(void)
 	};
 	rtrs_ctx = rtrs_srv_open(&rtrs_ops, port_nr);
 	if (IS_ERR(rtrs_ctx)) {
-		pr_err("rtrs_srv_open(), err: %d\n", err);
+		pr_err("rtrs_srv_open(), err: %pe\n", rtrs_ctx);
 		return PTR_ERR(rtrs_ctx);
 	}
 
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 83600b45e1..1dfb2e7789 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -36,7 +36,7 @@
 #include <linux/sched/mm.h>
 #include <linux/uaccess.h>
 #include <linux/cdev.h>
-#include <linux/io_uring.h>
+#include <linux/io_uring/cmd.h>
 #include <linux/blk-mq.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -250,7 +250,7 @@ static int ublk_dev_param_zoned_apply(struct ublk_device *ub)
 {
 	const struct ublk_param_zoned *p = &ub->params.zoned;
 
-	disk_set_zoned(ub->ub_disk, BLK_ZONED_HM);
+	disk_set_zoned(ub->ub_disk);
 	blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, ub->ub_disk->queue);
 	blk_queue_required_elevator_features(ub->ub_disk->queue,
 					     ELEVATOR_F_ZBD_SEQ_WRITE);
@@ -893,12 +893,9 @@ static int ublk_map_io(const struct ublk_queue *ubq, const struct request *req,
 	 */
 	if (ublk_need_map_req(req)) {
 		struct iov_iter iter;
-		struct iovec iov;
 		const int dir = ITER_DEST;
 
-		import_single_range(dir, u64_to_user_ptr(io->addr), rq_bytes,
-				&iov, &iter);
-
+		import_ubuf(dir, u64_to_user_ptr(io->addr), rq_bytes, &iter);
 		return ublk_copy_user_pages(req, 0, &iter, dir);
 	}
 	return rq_bytes;
@@ -915,13 +912,11 @@ static int ublk_unmap_io(const struct ublk_queue *ubq,
 
 	if (ublk_need_unmap_req(req)) {
 		struct iov_iter iter;
-		struct iovec iov;
 		const int dir = ITER_SOURCE;
 
 		WARN_ON_ONCE(io->res > rq_bytes);
 
-		import_single_range(dir, u64_to_user_ptr(io->addr), io->res,
-				&iov, &iter);
+		import_ubuf(dir, u64_to_user_ptr(io->addr), io->res, &iter);
 		return ublk_copy_user_pages(req, 0, &iter, dir);
 	}
 	return rq_bytes;
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 2c846eed5a..2bf14a0e28 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -367,8 +367,6 @@ static void virtblk_done(struct virtqueue *vq)
 				blk_mq_complete_request(req);
 			req_done = true;
 		}
-		if (unlikely(virtqueue_is_broken(vq)))
-			break;
 	} while (!virtqueue_enable_cb(vq));
 
 	/* In case queue is stopped waiting for more buffers. */
@@ -722,52 +720,15 @@ fail_report:
 	return ret;
 }
 
-static void virtblk_revalidate_zones(struct virtio_blk *vblk)
-{
-	u8 model;
-
-	virtio_cread(vblk->vdev, struct virtio_blk_config,
-		     zoned.model, &model);
-	switch (model) {
-	default:
-		dev_err(&vblk->vdev->dev, "unknown zone model %d\n", model);
-		fallthrough;
-	case VIRTIO_BLK_Z_NONE:
-	case VIRTIO_BLK_Z_HA:
-		disk_set_zoned(vblk->disk, BLK_ZONED_NONE);
-		return;
-	case VIRTIO_BLK_Z_HM:
-		WARN_ON_ONCE(!vblk->zone_sectors);
-		if (!blk_revalidate_disk_zones(vblk->disk, NULL))
-			set_capacity_and_notify(vblk->disk, 0);
-	}
-}
-
 static int virtblk_probe_zoned_device(struct virtio_device *vdev,
 				       struct virtio_blk *vblk,
 				       struct request_queue *q)
 {
 	u32 v, wg;
-	u8 model;
-
-	virtio_cread(vdev, struct virtio_blk_config,
-		     zoned.model, &model);
-
-	switch (model) {
-	case VIRTIO_BLK_Z_NONE:
-	case VIRTIO_BLK_Z_HA:
-		/* Present the host-aware device as non-zoned */
-		return 0;
-	case VIRTIO_BLK_Z_HM:
-		break;
-	default:
-		dev_err(&vdev->dev, "unsupported zone model %d\n", model);
-		return -EINVAL;
-	}
 
 	dev_dbg(&vdev->dev, "probing host-managed zoned device\n");
 
-	disk_set_zoned(vblk->disk, BLK_ZONED_HM);
+	disk_set_zoned(vblk->disk);
 	blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, q);
 
 	virtio_cread(vdev, struct virtio_blk_config,
@@ -839,23 +800,12 @@ static int virtblk_probe_zoned_device(struct virtio_device *vdev,
  */
 #define virtblk_report_zones       NULL
 
-static inline void virtblk_revalidate_zones(struct virtio_blk *vblk)
-{
-}
-
 static inline int virtblk_probe_zoned_device(struct virtio_device *vdev,
 			struct virtio_blk *vblk, struct request_queue *q)
 {
-	u8 model;
-
-	virtio_cread(vdev, struct virtio_blk_config, zoned.model, &model);
-	if (model == VIRTIO_BLK_Z_HM) {
-		dev_err(&vdev->dev,
-			"virtio_blk: zoned devices are not supported");
-		return -EOPNOTSUPP;
-	}
-
-	return 0;
+	dev_err(&vdev->dev,
+		"virtio_blk: zoned devices are not supported");
+	return -EOPNOTSUPP;
 }
 #endif /* CONFIG_BLK_DEV_ZONED */
 
@@ -1005,7 +955,6 @@ static void virtblk_config_changed_work(struct work_struct *work)
 	struct virtio_blk *vblk =
 		container_of(work, struct virtio_blk, config_work);
 
-	virtblk_revalidate_zones(vblk);
 	virtblk_update_capacity(vblk, true);
 }
 
@@ -1570,9 +1519,26 @@ static int virtblk_probe(struct virtio_device *vdev)
 	 * placed after the virtio_device_ready() call above.
 	 */
 	if (virtio_has_feature(vdev, VIRTIO_BLK_F_ZONED)) {
-		err = virtblk_probe_zoned_device(vdev, vblk, q);
-		if (err)
+		u8 model;
+
+		virtio_cread(vdev, struct virtio_blk_config, zoned.model,
+				&model);
+		switch (model) {
+		case VIRTIO_BLK_Z_NONE:
+		case VIRTIO_BLK_Z_HA:
+			/* Present the host-aware device as non-zoned */
+			break;
+		case VIRTIO_BLK_Z_HM:
+			err = virtblk_probe_zoned_device(vdev, vblk, q);
+			if (err)
+				goto out_cleanup_disk;
+			break;
+		default:
+			dev_err(&vdev->dev, "unsupported zone model %d\n",
+				model);
+			err = -EINVAL;
 			goto out_cleanup_disk;
+		}
 	}
 
 	err = device_add_disk(&vdev->dev, vblk->disk, virtblk_attr_groups);
diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h
index 5ff50e76ce..1432c83183 100644
--- a/drivers/block/xen-blkback/common.h
+++ b/drivers/block/xen-blkback/common.h
@@ -132,7 +132,7 @@ struct blkif_x86_32_request {
 struct blkif_x86_64_request_rw {
 	uint8_t        nr_segments;  /* number of segments                   */
 	blkif_vdev_t   handle;       /* only for read/write requests         */
-	uint32_t       _pad1;        /* offsetof(blkif_reqest..,u.rw.id)==8  */
+	uint32_t       _pad1;        /* offsetof(blkif_request..,u.rw.id)==8 */
 	uint64_t       id;
 	blkif_sector_t sector_number;/* start sector idx on disk (r/w only)  */
 	struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];
diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
index 0386b7da02..7b29cce60a 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -59,8 +59,8 @@ config ZRAM_WRITEBACK
        bool "Write back incompressible or idle page to backing device"
        depends on ZRAM
        help
-	 With incompressible page, there is no memory saving to keep it
-	 in memory. Instead, write it out to backing device.
+	 This lets zram entries (incompressible or idle pages) be written
+	 back to a backing device, helping save memory.
 	 For this feature, admin should set up backing device via
 	 /sys/block/zramX/backing_dev.
 
@@ -69,9 +69,18 @@ config ZRAM_WRITEBACK
 
 	 See Documentation/admin-guide/blockdev/zram.rst for more information.
 
+config ZRAM_TRACK_ENTRY_ACTIME
+	bool "Track access time of zram entries"
+	depends on ZRAM
+	help
+	  With this feature zram tracks access time of every stored
+	  entry (page), which can be used for a more fine grained IDLE
+	  pages writeback.
+
 config ZRAM_MEMORY_TRACKING
 	bool "Track zRam block status"
 	depends on ZRAM && DEBUG_FS
+	select ZRAM_TRACK_ENTRY_ACTIME
 	help
 	  With this feature, admin can track the state of allocated blocks
 	  of zRAM. Admin could see the information via
@@ -86,4 +95,4 @@ config ZRAM_MULTI_COMP
 	  This will enable multi-compression streams, so that ZRAM can
 	  re-compress pages using a potentially slower but more effective
 	  compression algorithm. Note, that IDLE page recompression
-	  requires ZRAM_MEMORY_TRACKING.
+	  requires ZRAM_TRACK_ENTRY_ACTIME.
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index d77d3664ca..6772e0c654 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -174,6 +174,14 @@ static inline u32 zram_get_priority(struct zram *zram, u32 index)
 	return prio & ZRAM_COMP_PRIORITY_MASK;
 }
 
+static void zram_accessed(struct zram *zram, u32 index)
+{
+	zram_clear_flag(zram, index, ZRAM_IDLE);
+#ifdef CONFIG_ZRAM_TRACK_ENTRY_ACTIME
+	zram->table[index].ac_time = ktime_get_boottime();
+#endif
+}
+
 static inline void update_used_max(struct zram *zram,
 					const unsigned long pages)
 {
@@ -293,8 +301,9 @@ static void mark_idle(struct zram *zram, ktime_t cutoff)
 		zram_slot_lock(zram, index);
 		if (zram_allocated(zram, index) &&
 				!zram_test_flag(zram, index, ZRAM_UNDER_WB)) {
-#ifdef CONFIG_ZRAM_MEMORY_TRACKING
-			is_idle = !cutoff || ktime_after(cutoff, zram->table[index].ac_time);
+#ifdef CONFIG_ZRAM_TRACK_ENTRY_ACTIME
+			is_idle = !cutoff || ktime_after(cutoff,
+							 zram->table[index].ac_time);
 #endif
 			if (is_idle)
 				zram_set_flag(zram, index, ZRAM_IDLE);
@@ -317,7 +326,7 @@ static ssize_t idle_store(struct device *dev,
 		 */
 		u64 age_sec;
 
-		if (IS_ENABLED(CONFIG_ZRAM_MEMORY_TRACKING) && !kstrtoull(buf, 0, &age_sec))
+		if (IS_ENABLED(CONFIG_ZRAM_TRACK_ENTRY_ACTIME) && !kstrtoull(buf, 0, &age_sec))
 			cutoff_time = ktime_sub(ktime_get_boottime(),
 					ns_to_ktime(age_sec * NSEC_PER_SEC));
 		else
@@ -841,12 +850,6 @@ static void zram_debugfs_destroy(void)
 	debugfs_remove_recursive(zram_debugfs_root);
 }
 
-static void zram_accessed(struct zram *zram, u32 index)
-{
-	zram_clear_flag(zram, index, ZRAM_IDLE);
-	zram->table[index].ac_time = ktime_get_boottime();
-}
-
 static ssize_t read_block_state(struct file *file, char __user *buf,
 				size_t count, loff_t *ppos)
 {
@@ -930,10 +933,6 @@ static void zram_debugfs_unregister(struct zram *zram)
 #else
 static void zram_debugfs_create(void) {};
 static void zram_debugfs_destroy(void) {};
-static void zram_accessed(struct zram *zram, u32 index)
-{
-	zram_clear_flag(zram, index, ZRAM_IDLE);
-};
 static void zram_debugfs_register(struct zram *zram) {};
 static void zram_debugfs_unregister(struct zram *zram) {};
 #endif
@@ -1254,7 +1253,7 @@ static void zram_free_page(struct zram *zram, size_t index)
 {
 	unsigned long handle;
 
-#ifdef CONFIG_ZRAM_MEMORY_TRACKING
+#ifdef CONFIG_ZRAM_TRACK_ENTRY_ACTIME
 	zram->table[index].ac_time = 0;
 #endif
 	if (zram_test_flag(zram, index, ZRAM_IDLE))
@@ -1322,9 +1321,9 @@ static int zram_read_from_zspool(struct zram *zram, struct page *page,
 		void *mem;
 
 		value = handle ? zram_get_element(zram, index) : 0;
-		mem = kmap_atomic(page);
+		mem = kmap_local_page(page);
 		zram_fill_page(mem, PAGE_SIZE, value);
-		kunmap_atomic(mem);
+		kunmap_local(mem);
 		return 0;
 	}
 
@@ -1337,14 +1336,14 @@ static int zram_read_from_zspool(struct zram *zram, struct page *page,
 
 	src = zs_map_object(zram->mem_pool, handle, ZS_MM_RO);
 	if (size == PAGE_SIZE) {
-		dst = kmap_atomic(page);
+		dst = kmap_local_page(page);
 		memcpy(dst, src, PAGE_SIZE);
-		kunmap_atomic(dst);
+		kunmap_local(dst);
 		ret = 0;
 	} else {
-		dst = kmap_atomic(page);
+		dst = kmap_local_page(page);
 		ret = zcomp_decompress(zstrm, src, size, dst);
-		kunmap_atomic(dst);
+		kunmap_local(dst);
 		zcomp_stream_put(zram->comps[prio]);
 	}
 	zs_unmap_object(zram->mem_pool, handle);
@@ -1417,21 +1416,21 @@ static int zram_write_page(struct zram *zram, struct page *page, u32 index)
 	unsigned long element = 0;
 	enum zram_pageflags flags = 0;
 
-	mem = kmap_atomic(page);
+	mem = kmap_local_page(page);
 	if (page_same_filled(mem, &element)) {
-		kunmap_atomic(mem);
+		kunmap_local(mem);
 		/* Free memory associated with this sector now. */
 		flags = ZRAM_SAME;
 		atomic64_inc(&zram->stats.same_pages);
 		goto out;
 	}
-	kunmap_atomic(mem);
+	kunmap_local(mem);
 
 compress_again:
 	zstrm = zcomp_stream_get(zram->comps[ZRAM_PRIMARY_COMP]);
-	src = kmap_atomic(page);
+	src = kmap_local_page(page);
 	ret = zcomp_compress(zstrm, src, &comp_len);
-	kunmap_atomic(src);
+	kunmap_local(src);
 
 	if (unlikely(ret)) {
 		zcomp_stream_put(zram->comps[ZRAM_PRIMARY_COMP]);
@@ -1495,10 +1494,10 @@ compress_again:
 
 	src = zstrm->buffer;
 	if (comp_len == PAGE_SIZE)
-		src = kmap_atomic(page);
+		src = kmap_local_page(page);
 	memcpy(dst, src, comp_len);
 	if (comp_len == PAGE_SIZE)
-		kunmap_atomic(src);
+		kunmap_local(src);
 
 	zcomp_stream_put(zram->comps[ZRAM_PRIMARY_COMP]);
 	zs_unmap_object(zram->mem_pool, handle);
@@ -1615,9 +1614,9 @@ static int zram_recompress(struct zram *zram, u32 index, struct page *page,
 
 		num_recomps++;
 		zstrm = zcomp_stream_get(zram->comps[prio]);
-		src = kmap_atomic(page);
+		src = kmap_local_page(page);
 		ret = zcomp_compress(zstrm, src, &comp_len_new);
-		kunmap_atomic(src);
+		kunmap_local(src);
 
 		if (ret) {
 			zcomp_stream_put(zram->comps[prio]);
@@ -2227,7 +2226,6 @@ static int zram_add(void)
 					ZRAM_LOGICAL_BLOCK_SIZE);
 	blk_queue_io_min(zram->disk->queue, PAGE_SIZE);
 	blk_queue_io_opt(zram->disk->queue, PAGE_SIZE);
-	zram->disk->queue->limits.discard_granularity = PAGE_SIZE;
 	blk_queue_max_discard_sectors(zram->disk->queue, UINT_MAX);
 
 	/*
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index d090753f97..3b94d12f41 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -69,7 +69,7 @@ struct zram_table_entry {
 		unsigned long element;
 	};
 	unsigned long flags;
-#ifdef CONFIG_ZRAM_MEMORY_TRACKING
+#ifdef CONFIG_ZRAM_TRACK_ENTRY_ACTIME
 	ktime_t ac_time;
 #endif
 };