From 3e99b3b13a1fc8f7354edaee4c04f73a07faba69 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Thu, 6 Jun 2019 16:34:09 +0800 Subject: [PATCH] scsi: core: don't preallocate small SGL in case of NO_SG_CHAIN The preallocated small SGL depends on SG_CHAIN so if the ARCH doesn't support SG_CHAIN, preallocation of small SGL can't work at all. Fix this issue by not using small preallocation in case of NO_SG_CHAIN. Cc: Christoph Hellwig Cc: Bart Van Assche Cc: Ewan D. Milne Cc: Hannes Reinecke Cc: Guenter Roeck Reported-by: Guenter Roeck Reviewed-by: Christoph Hellwig Reviewed-by: Bart Van Assche Tested-by: Guenter Roeck Signed-off-by: Ming Lei Signed-off-by: Martin K. Petersen --- 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 45b43e97505c..30cbea57ea08 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -43,9 +43,13 @@ * 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;