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authorChristoph Hellwig <hch@lst.de>2019-11-11 11:39:30 +0900
committerJens Axboe <axboe@kernel.dk>2019-11-12 19:12:07 -0700
commitd41003513e61dd9d4974cb441d30b63650b85654 (patch)
treec55164e7ccf02f6e7e936757ed178b06109fcca2 /drivers/md/dm-linear.c
parent23a50861adda26a3f3b3ec5fbca0583133d89538 (diff)
block: rework zone reporting
Avoid the need to allocate a potentially large array of struct blk_zone in the block layer by switching the ->report_zones method interface to a callback model. Now the caller simply supplies a callback that is executed on each reported zone, and private data for it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/dm-linear.c')
-rw-r--r--drivers/md/dm-linear.c20
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index 97acafd48c85..8d07fdf63a47 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -136,21 +136,15 @@ static int linear_prepare_ioctl(struct dm_target *ti, struct block_device **bdev
}
#ifdef CONFIG_BLK_DEV_ZONED
-static int linear_report_zones(struct dm_target *ti, sector_t sector,
- struct blk_zone *zones, unsigned int *nr_zones)
+static int linear_report_zones(struct dm_target *ti,
+ struct dm_report_zones_args *args, unsigned int nr_zones)
{
- struct linear_c *lc = (struct linear_c *) ti->private;
- int ret;
-
- /* Do report and remap it */
- ret = blkdev_report_zones(lc->dev->bdev, linear_map_sector(ti, sector),
- zones, nr_zones);
- if (ret != 0)
- return ret;
+ struct linear_c *lc = ti->private;
+ sector_t sector = linear_map_sector(ti, args->next_sector);
- if (*nr_zones)
- dm_remap_zone_report(ti, lc->start, zones, nr_zones);
- return 0;
+ args->start = lc->start;
+ return blkdev_report_zones(lc->dev->bdev, sector, nr_zones,
+ dm_report_zones_cb, args);
}
#endif