diff options
| author | Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2020-05-20 16:01:52 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-05-21 08:47:28 -0600 |
| commit | 1592cd15eec6e2952453f9a82da6e8a53e2b8db5 (patch) | |
| tree | ba66c62d973854ef2db95a22132bfe81d83b901a /drivers | |
| parent | e274832590211c4b1b1e807ca66fad8b5bb8b328 (diff) | |
null_blk: don't allow discard for zoned mode
Zoned block device specification do not define the behavior of
discard/trim command as this command is generally replaced by the reset
write pointer (zone reset) command. Emulate this in null_blk by making
zoned and discard options mutually exclusive.
Suggested-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/null_blk_main.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c index 8efd8778e209..ce9e33603a4d 100644 --- a/drivers/block/null_blk_main.c +++ b/drivers/block/null_blk_main.c @@ -1535,6 +1535,13 @@ static void null_config_discard(struct nullb *nullb) { if (nullb->dev->discard == false) return; + + if (nullb->dev->zoned) { + nullb->dev->discard = false; + pr_info("discard option is ignored in zoned mode\n"); + return; + } + nullb->q->limits.discard_granularity = nullb->dev->blocksize; nullb->q->limits.discard_alignment = nullb->dev->blocksize; blk_queue_max_discard_sectors(nullb->q, UINT_MAX >> 9); |