diff options
| author |   Christoph Hellwig <hch@lst.de> | 2019-11-11 11:39:30 +0900 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2019-11-12 19:12:07 -0700 |
| commit | d41003513e61dd9d4974cb441d30b63650b85654 (patch) | |
| tree | c55164e7ccf02f6e7e936757ed178b06109fcca2 /drivers/md/dm-linear.c | |
| parent | scsi: sd_zbc: Cleanup sd_zbc_alloc_report_buffer() (diff) | |
| download | linux-dev-d41003513e61dd9d4974cb441d30b63650b85654.tar.xz linux-dev-d41003513e61dd9d4974cb441d30b63650b85654.zip | |
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.c | 20 |
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 |