From: Tom Yan <tom.ty89@xxxxxxxxx>
According to its own comment, the discard granularity should
fixed to the logical block size. However, the actual code has
it hardcoded as 1 byte. Changing it to logical_block_size.
Signed-off-by: Tom Yan <tom.ty89@xxxxxxxxx>
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index d749da7..5a5457a 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -648,7 +648,7 @@ static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode)
*/
if (sdkp->lbprz) {
q->limits.discard_alignment = 0;
- q->limits.discard_granularity = 1;
+ q->limits.discard_granularity = logical_block_size;
} else {
q->limits.discard_alignment = sdkp->unmap_alignment *
logical_block_size;
--
2.7.2
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