From: Zhang Yi <yi.zhang@xxxxxxxxxx>
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
BLK_FEAT_WRITE_ZEROES_UNMAP feature to the device's queue limit.
Signed-off-by: Zhang Yi <yi.zhang@xxxxxxxxxx>
---
drivers/scsi/sd.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 8947dab132d7..95e115c69286 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1122,6 +1122,11 @@ static void sd_config_write_same(struct scsi_disk *sdkp,
else
sdkp->zeroing_mode = SD_ZERO_WRITE;
+ if (sdkp->max_ws_blocks &&
+ (sdkp->zeroing_mode == SD_ZERO_WS16_UNMAP ||
+ sdkp->zeroing_mode == SD_ZERO_WS10_UNMAP))
+ lim->features |= BLK_FEAT_WRITE_ZEROES_UNMAP;
+
if (sdkp->max_ws_blocks &&
sdkp->physical_block_size > logical_block_size) {
/*
--
2.39.2
