korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-29 22:14:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

null_blk: discard zones on reset

Browse Source 
When memory backing is enabled, use null_handle_discard() to free the
backing memory used by a zone when the zone is being reset.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Damien Le Moal 2020-11-20 10:55:17 +09:00 committed by Jens Axboe
parent 49c7089f3d
commit 0ec4d913ac
3 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/block/null_blk.h
View File

@ -116,6 +116,8 @@ struct nullb {
char disk_name[DISK_NAME_LEN];
};
blk_status_t null_handle_discard(struct nullb_device *dev, sector_t sector,
sector_t nr_sectors);
blk_status_t null_process_cmd(struct nullb_cmd *cmd,
enum req_opf op, sector_t sector,
unsigned int nr_sectors);

4
drivers/block/null_blk_main.c
View File

@ -1076,8 +1076,8 @@ static void nullb_fill_pattern(struct nullb *nullb, struct page *page,
kunmap_atomic(dst);
}
static blk_status_t null_handle_discard(struct nullb_device *dev,
sector_t sector, sector_t nr_sectors)
blk_status_t null_handle_discard(struct nullb_device *dev,
sector_t sector, sector_t nr_sectors)
{
struct nullb *nullb = dev->nullb;
size_t n = nr_sectors << SECTOR_SHIFT;

3
drivers/block/null_blk_zoned.c
View File

@ -588,6 +588,9 @@ static blk_status_t null_reset_zone(struct nullb_device *dev,
null_unlock_zone_res(dev);
if (dev->memory_backed)
return null_handle_discard(dev, zone->start, zone->len);
return BLK_STS_OK;
}