diff mbox series

[v2,4/9] scsi: sd: set max_hw_wzeroes_unmap_sectors if device supports SD_ZERO_*_UNMAP

Message ID 20250619111806.3546162-5-yi.zhang@huaweicloud.com
State New
Headers show
Series fallocate: introduce FALLOC_FL_WRITE_ZEROES flag | expand

Commit Message

Zhang Yi June 19, 2025, 11:18 a.m. UTC 
From: Zhang Yi <yi.zhang@huawei.com>

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>
---
 drivers/scsi/sd.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3f6e87705b62..877dc34e8f37 100644
--- 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)