From: Zhang Yi Date: Thu, 19 Jun 2025 11:18:00 +0000 (+0800) Subject: nvmet: set WZDS and DRB if device enables unmap write zeroes operation X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=50634366de8629fdb96c5dd7ea595f9b61835dfc;p=users%2Fjedix%2Flinux-maple.git 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 Link: https://lore.kernel.org/20250619111806.3546162-4-yi.zhang@huaweicloud.com Reviewed-by: Christoph Hellwig Reviewed-by: "Martin K. Petersen" Signed-off-by: Christian Brauner --- diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c index eba42df2f8215..31d6c4a63fa58 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)