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| author | Damien Le Moal <damien.lemoal@wdc.com> | 2020-11-20 10:55:17 +0900 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-12-07 17:36:03 -0700 |
| commit | 0ec4d913ac69ec86757eec117fc2733018552aa7 (patch) | |
| tree | b30b4a1b492605daed56ecb934045cace5cd41d2 /drivers/block | |
| parent | 49c7089f3ded981fcea387f853fa394788e60fb2 (diff) | |
| download | lwn-0ec4d913ac69ec86757eec117fc2733018552aa7.tar.gz lwn-0ec4d913ac69ec86757eec117fc2733018552aa7.zip | |
null_blk: discard zones on reset
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>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/null_blk.h | 2 | ||||
| -rw-r--r-- | drivers/block/null_blk_main.c | 4 | ||||
| -rw-r--r-- | drivers/block/null_blk_zoned.c | 3 |
3 files changed, 7 insertions, 2 deletions
diff --git a/drivers/block/null_blk.h b/drivers/block/null_blk.h index 29a8817fadfc..63000aeeb2f3 100644 --- a/drivers/block/null_blk.h +++ b/drivers/block/null_blk.h @@ -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); diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c index a223bee24e76..b758b9366630 100644 --- a/drivers/block/null_blk_main.c +++ b/drivers/block/null_blk_main.c @@ -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; diff --git a/drivers/block/null_blk_zoned.c b/drivers/block/null_blk_zoned.c index 4dad8748a61d..65464f7559e0 100644 --- a/drivers/block/null_blk_zoned.c +++ b/drivers/block/null_blk_zoned.c @@ -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; } |