nvme: set max_hw_wzeroes_unmap_sectors if device supports DEAC bit

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When the device supports the Write Zeroes command and the DEAC bit, it
indicates that the deallocate bit in the Write Zeroes command is
supported, and the bytes read from a deallocated logical block are
zeroes. This means the device supports unmap Write Zeroes operation, so
set the max_hw_wzeroes_unmap_sectors to max_write_zeroes_sectors on the
device's queue limit.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://lore.kernel.org/20250619111806.3546162-3-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>

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Zhang Yi 2025-06-19 19:17:59 +08:00 • committed by Christian Brauner

parent 0c40d7cb5e

commit 545fb46e5b

1 changed files with 11 additions and 9 deletions

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drivers/nvme/host/core.c

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