From: Hank Janssen Date: Thu, 5 Aug 2010 19:30:31 +0000 (+0000) Subject: staging: hv: Increased storvsc ringbuffer and max_io_requests X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=15dd1c9f53b31cdc84b8072a88c23fa09527c596;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git staging: hv: Increased storvsc ringbuffer and max_io_requests Increased storvsc ringbuffer and max_io_requests. This now more closely mimics the numbers on Hyper-V. And will allow more IO requests to take place for the SCSI driver. Max_IO is set to double from what it was before, Hyper-V allows it and we have had appliance builder requests to see if it was a problem to increase the number. Ringbuffer size for storvsc is now increased because I have seen A few buffer problems on extremely busy systems. They were Set pretty low before. And since max_io_requests is increased I Really needed to increase the buffer as well. Signed-off-by:Hank Janssen Signed-off-by:Haiyang Zhang Cc: stable Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/hv/storvsc_api.h b/drivers/staging/hv/storvsc_api.h index 0063bde9a4b..8505a1c5f9e 100644 --- a/drivers/staging/hv/storvsc_api.h +++ b/drivers/staging/hv/storvsc_api.h @@ -28,10 +28,10 @@ #include "vmbus_api.h" /* Defines */ -#define STORVSC_RING_BUFFER_SIZE (10*PAGE_SIZE) +#define STORVSC_RING_BUFFER_SIZE (20*PAGE_SIZE) #define BLKVSC_RING_BUFFER_SIZE (20*PAGE_SIZE) -#define STORVSC_MAX_IO_REQUESTS 64 +#define STORVSC_MAX_IO_REQUESTS 128 /* * In Hyper-V, each port/path/target maps to 1 scsi host adapter. In