Commit 6dffe079 authored by Zhang Yi's avatar Zhang Yi Committed by Christian Brauner
Browse files

scsi: sd: set max_hw_wzeroes_unmap_sectors if device supports SD_ZERO_*_UNMAP 



When the device supports the Write Zeroes command and the zeroing mode
is set to SD_ZERO_WS16_UNMAP or SD_ZERO_WS10_UNMAP, this means that the
device supports unmap Write Zeroes, so set the corresponding
max_hw_write_zeroes_unmap_sectors to max_write_zeroes_sectors on the
device's queue limit.

Signed-off-by: default avatarZhang Yi <yi.zhang@huawei.com>
Link: https://lore.kernel.org/20250619111806.3546162-5-yi.zhang@huaweicloud.com


Reviewed-by: default avatar"Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 50634366

drivers/scsi/sd.c

+5 −0
Original line number Diff line number Diff line
@@ -1141,6 +1141,11 @@ static void sd_config_write_same(struct scsi_disk *sdkp, 
out:

	lim->max_write_zeroes_sectors =

		sdkp->max_ws_blocks * (logical_block_size >> SECTOR_SHIFT);



	if (sdkp->zeroing_mode == SD_ZERO_WS16_UNMAP ||

	    sdkp->zeroing_mode == SD_ZERO_WS10_UNMAP)

		lim->max_hw_wzeroes_unmap_sectors =

				lim->max_write_zeroes_sectors;

}



static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)