The pre-allocated small SGL depends on SG_CHAIN, so if the ARCH doesn't
support SG_CHAIN, pre-allocation of small SGL can't work at all.
Fixes this issue by not using small pre-allocation in case of
NO_SG_CHAIN.
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Bart Van Assche <bvanassche@xxxxxxx>
Cc: Ewan D. Milne <emilne@xxxxxxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Fixes: c3288dd8c232 ("scsi: core: avoid pre-allocating big SGL for data")
Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
drivers/scsi/scsi_lib.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 6e81258471fa..29aba762a4f1 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -44,9 +44,13 @@
* Size of integrity metadata is usually small, 1 inline sg should
* cover normal cases.
*/
+#ifdef CONFIG_ARCH_NO_SG_CHAIN
+#define SCSI_INLINE_PROT_SG_CNT 0
+#define SCSI_INLINE_SG_CNT 0
+#else
#define SCSI_INLINE_PROT_SG_CNT 1
-
#define SCSI_INLINE_SG_CNT 2
+#endif
static struct kmem_cache *scsi_sdb_cache;
static struct kmem_cache *scsi_sense_cache;
--
2.20.1
