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: Zhang Yi <yi.zhang@huawei.com>
Link: https://lore.kernel.org/20250619111806.3546162-5-yi.zhang@huaweicloud.com
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3f6e87705b62e59a5bf599d414f9ae7b3a61c3cb..877dc34e8f37ecbe5f7b027223d47ba51209af7e 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -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)