diff options
| author | Zhang Yi <yi.zhang@huawei.com> | 2025-06-19 19:18:00 +0800 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-06-23 12:45:13 +0200 |
| commit | 50634366de8629fdb96c5dd7ea595f9b61835dfc (patch) | |
| tree | 1b67de95984644c344f08bc452a7505c7ae0d16e | |
| parent | 545fb46e5bc6ffaa303181bd3878db506a0f0fa6 (diff) | |
nvmet: set WZDS and DRB if device enables unmap write zeroes operation
Set the WZDS and DRB bits to the namespace dlfeat if the underlying
block device enables the unmap write zeroes operation, make the nvme
target device supports the unmap write zeroes command.
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://lore.kernel.org/20250619111806.3546162-4-yi.zhang@huaweicloud.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | drivers/nvme/target/io-cmd-bdev.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c index eba42df2f821..31d6c4a63fa5 100644 --- a/drivers/nvme/target/io-cmd-bdev.c +++ b/drivers/nvme/target/io-cmd-bdev.c @@ -46,6 +46,10 @@ void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id) id->npda = id->npdg; /* NOWS = Namespace Optimal Write Size */ id->nows = to0based(bdev_io_opt(bdev) / bdev_logical_block_size(bdev)); + + /* Set WZDS and DRB if device supports unmapped write zeroes */ + if (bdev_write_zeroes_unmap_sectors(bdev)) + id->dlfeat = (1 << 3) | 0x1; } void nvmet_bdev_ns_disable(struct nvmet_ns *ns) |