dm-delay: support zoned devices

Add support for zoned device by passing through report_zoned to the
underlying read device.

This is required to make enable xfstests xfs/311 on zoned devices.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index 08f6387620c1ceffe5aef3f44a66f74251eaeba5..d4cf0ac2a7aaa97c919e6fed375d2b90e9f29f17 100644 (file)
--- a/drivers/md/dm-delay.c
+++ b/drivers/md/dm-delay.c
@@ -369,6 +369,21 @@ static int delay_map(struct dm_target *ti, struct bio *bio)
        return delay_bio(dc, c, bio);
 }
 
+#ifdef CONFIG_BLK_DEV_ZONED
+static int delay_report_zones(struct dm_target *ti,
+               struct dm_report_zones_args *args, unsigned int nr_zones)
+{
+       struct delay_c *dc = ti->private;
+       struct delay_class *c = &dc->read;
+
+       return dm_report_zones(c->dev->bdev, c->start,
+                       c->start + dm_target_offset(ti, args->next_sector),
+                       args, nr_zones);
+}
+#else
+#define delay_report_zones     NULL
+#endif
+
 #define DMEMIT_DELAY_CLASS(c) \
        DMEMIT("%s %llu %u", (c)->dev->name, (unsigned long long)(c)->start, (c)->delay)
 
@@ -424,11 +439,12 @@ out:
 static struct target_type delay_target = {
        .name        = "delay",
        .version     = {1, 4, 0},
-       .features    = DM_TARGET_PASSES_INTEGRITY,
+       .features    = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_ZONED_HM,
        .module      = THIS_MODULE,
        .ctr         = delay_ctr,
        .dtr         = delay_dtr,
        .map         = delay_map,
+       .report_zones = delay_report_zones,
        .presuspend  = delay_presuspend,
        .resume      = delay_resume,
        .status      = delay_status,