add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/md/dm-linear.c
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@@ -62,7 +62,6 @@
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 	ti->num_secure_erase_bios = 1;
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 	ti->num_write_same_bios = 1;
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 	ti->num_write_zeroes_bios = 1;
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-	ti->may_passthrough_inline_crypto = true;
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 	ti->private = lc;
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 	return 0;
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@@ -91,7 +90,7 @@
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 	struct linear_c *lc = ti->private;
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 	bio_set_dev(bio, lc->dev->bdev);
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-	if (bio_sectors(bio) || bio_op(bio) == REQ_OP_ZONE_RESET)
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+	if (bio_sectors(bio) || op_is_zone_mgmt(bio_op(bio)))
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 		bio->bi_iter.bi_sector =
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 			linear_map_sector(ti, bio->bi_iter.bi_sector);
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 }
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@@ -102,19 +101,6 @@
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 	return DM_MAPIO_REMAPPED;
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 }
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-
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-#ifdef CONFIG_BLK_DEV_ZONED
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-static int linear_end_io(struct dm_target *ti, struct bio *bio,
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-			 blk_status_t *error)
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-{
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-	struct linear_c *lc = ti->private;
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-
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-	if (!*error && bio_op(bio) == REQ_OP_ZONE_REPORT)
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-		dm_remap_zone_report(ti, bio, lc->start);
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-
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-	return DM_ENDIO_DONE;
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-}
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-#endif
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 static void linear_status(struct dm_target *ti, status_type_t type,
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 			  unsigned status_flags, char *result, unsigned maxlen)
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@@ -148,6 +134,19 @@
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 		return 1;
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 	return 0;
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 }
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+
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+#ifdef CONFIG_BLK_DEV_ZONED
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+static int linear_report_zones(struct dm_target *ti,
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+		struct dm_report_zones_args *args, unsigned int nr_zones)
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+{
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+	struct linear_c *lc = ti->private;
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+	sector_t sector = linear_map_sector(ti, args->next_sector);
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+
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+	args->start = lc->start;
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+	return blkdev_report_zones(lc->dev->bdev, sector, nr_zones,
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+				   dm_report_zones_cb, args);
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+}
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+#endif
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 static int linear_iterate_devices(struct dm_target *ti,
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 				  iterate_devices_callout_fn fn, void *data)
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@@ -202,20 +201,39 @@
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 	return dax_copy_to_iter(dax_dev, pgoff, addr, bytes, i);
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 }
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+static int linear_dax_zero_page_range(struct dm_target *ti, pgoff_t pgoff,
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+				      size_t nr_pages)
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+{
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+	int ret;
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+	struct linear_c *lc = ti->private;
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+	struct block_device *bdev = lc->dev->bdev;
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+	struct dax_device *dax_dev = lc->dev->dax_dev;
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+	sector_t dev_sector, sector = pgoff * PAGE_SECTORS;
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+
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+	dev_sector = linear_map_sector(ti, sector);
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+	ret = bdev_dax_pgoff(bdev, dev_sector, nr_pages << PAGE_SHIFT, &pgoff);
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+	if (ret)
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+		return ret;
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+	return dax_zero_page_range(dax_dev, pgoff, nr_pages);
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+}
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+
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 #else
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 #define linear_dax_direct_access NULL
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 #define linear_dax_copy_from_iter NULL
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 #define linear_dax_copy_to_iter NULL
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+#define linear_dax_zero_page_range NULL
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 #endif
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 static struct target_type linear_target = {
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 	.name   = "linear",
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 	.version = {1, 4, 0},
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 #ifdef CONFIG_BLK_DEV_ZONED
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-	.end_io = linear_end_io,
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-	.features = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_ZONED_HM,
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+	.features = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_NOWAIT |
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+		    DM_TARGET_ZONED_HM | DM_TARGET_PASSES_CRYPTO,
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+	.report_zones = linear_report_zones,
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 #else
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-	.features = DM_TARGET_PASSES_INTEGRITY,
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+	.features = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_NOWAIT |
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+		    DM_TARGET_PASSES_CRYPTO,
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 #endif
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 	.module = THIS_MODULE,
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 	.ctr    = linear_ctr,
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@@ -227,6 +245,7 @@
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 	.direct_access = linear_dax_direct_access,
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 	.dax_copy_from_iter = linear_dax_copy_from_iter,
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 	.dax_copy_to_iter = linear_dax_copy_to_iter,
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+	.dax_zero_page_range = linear_dax_zero_page_range,
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 };
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 int __init dm_linear_init(void)