From 864d39df09b43f9d09d80bc29d8e8888294b3c4b Mon Sep 17 00:00:00 2001 From: Greg Edwards Date: Wed, 8 Aug 2018 13:29:55 -0600 Subject: [PATCH] vhost/scsi: increase VHOST_SCSI_PREALLOC_PROT_SGLS to 2048 The current value of VHOST_SCSI_PREALLOC_PROT_SGLS is too small to accommodate larger I/Os, e.g. 16-32 MiB, when the VIRTIO_SCSI_F_T10_PI feature bit is negotiated and the backing store supports T10 PI. vhost-scsi rejects the command with errors like: [ 59.581317] vhost_scsi_calc_sgls: requested sgl_count: 1820 exceeds pre-allocated max_sgls: 512 Signed-off-by: Greg Edwards Signed-off-by: Michael S. Tsirkin --- drivers/vhost/scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 17fcd3b2e686..8c32cf58d6fa 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -56,7 +56,7 @@ #define VHOST_SCSI_DEFAULT_TAGS 256 #define VHOST_SCSI_PREALLOC_SGLS 2048 #define VHOST_SCSI_PREALLOC_UPAGES 2048 -#define VHOST_SCSI_PREALLOC_PROT_SGLS 512 +#define VHOST_SCSI_PREALLOC_PROT_SGLS 2048 struct vhost_scsi_inflight { /* Wait for the flush operation to finish */ -- 2.11.0