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| author | Damien Le Moal <damien.lemoal@wdc.com> | 2017-05-08 16:40:50 -0700 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2017-06-19 11:03:51 -0400 |
| commit | 0be12c1c7fce7e0f464861a7752d489860c376f9 (patch) | |
| tree | 74fcd625e94e72c81a523adb1249ee9179b0ed8d /drivers/md | |
| parent | 124c44546d0cbf6dc2daf92cba80cf556e9039c3 (diff) | |
| download | linux-0be12c1c7fce7e0f464861a7752d489860c376f9.tar.gz linux-0be12c1c7fce7e0f464861a7752d489860c376f9.tar.bz2 linux-0be12c1c7fce7e0f464861a7752d489860c376f9.zip | |
dm linear: add support for zoned block devices
Add support for zoned block devices by allowing host-managed zoned block
device mapped targets, the remapping of REQ_OP_ZONE_RESET and the post
processing (reply remapping) of REQ_OP_ZONE_REPORT.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-linear.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index 7d42a9d9f406..c03c203a90b4 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -89,7 +89,7 @@ static void linear_map_bio(struct dm_target *ti, struct bio *bio) struct linear_c *lc = ti->private; bio->bi_bdev = lc->dev->bdev; - if (bio_sectors(bio)) + if (bio_sectors(bio) || bio_op(bio) == REQ_OP_ZONE_RESET) bio->bi_iter.bi_sector = linear_map_sector(ti, bio->bi_iter.bi_sector); } @@ -101,6 +101,17 @@ static int linear_map(struct dm_target *ti, struct bio *bio) return DM_MAPIO_REMAPPED; } +static int linear_end_io(struct dm_target *ti, struct bio *bio, + blk_status_t *error) +{ + struct linear_c *lc = ti->private; + + if (!*error && bio_op(bio) == REQ_OP_ZONE_REPORT) + dm_remap_zone_report(ti, bio, lc->start); + + return DM_ENDIO_DONE; +} + static void linear_status(struct dm_target *ti, status_type_t type, unsigned status_flags, char *result, unsigned maxlen) { @@ -161,12 +172,13 @@ static long linear_dax_direct_access(struct dm_target *ti, pgoff_t pgoff, static struct target_type linear_target = { .name = "linear", - .version = {1, 3, 0}, - .features = DM_TARGET_PASSES_INTEGRITY, + .version = {1, 4, 0}, + .features = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_ZONED_HM, .module = THIS_MODULE, .ctr = linear_ctr, .dtr = linear_dtr, .map = linear_map, + .end_io = linear_end_io, .status = linear_status, .prepare_ioctl = linear_prepare_ioctl, .iterate_devices = linear_iterate_devices, |