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scsi: core: Introduce the BLIST_SKIP_IO_HINTS flag

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Prepare for skipping the IO Advice Hints Grouping mode page for USB storage
devices.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Joao Machado <jocrismachado@gmail.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Christian Heusel <christian@heusel.eu>
Cc: stable@vger.kernel.org
Fixes: 4f53138fff ("scsi: sd: Translate data lifetime information")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240613211828.2077477-2-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2024-06-13 14:18:26 -07:00 committed by Martin K. Petersen
parent 135c6eb27a
commit 633aeefafc
2 changed files with 7 additions and 1 deletions
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4
drivers/scsi/sd.c
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@ -63,6 +63,7 @@
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_devinfo.h>
#include <scsi/scsi_driver.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
@ -3118,6 +3119,9 @@ static void sd_read_io_hints(struct scsi_disk *sdkp, unsigned char *buffer)
struct scsi_mode_data data;
int res;
if (sdp->sdev_bflags & BLIST_SKIP_IO_HINTS)
return;
res = scsi_mode_sense(sdp, /*dbd=*/0x8, /*modepage=*/0x0a,
/*subpage=*/0x05, buffer, SD_BUF_SIZE, SD_TIMEOUT,
sdkp->max_retries, &data, &sshdr);

4
include/scsi/scsi_devinfo.h
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@ -69,8 +69,10 @@
#define BLIST_RETRY_ITF ((__force blist_flags_t)(1ULL << 32))
/* Always retry ABORTED_COMMAND with ASC 0xc1 */
#define BLIST_RETRY_ASC_C1 ((__force blist_flags_t)(1ULL << 33))
/* Do not query the IO Advice Hints Grouping mode page */
#define BLIST_SKIP_IO_HINTS ((__force blist_flags_t)(1ULL << 34))
#define __BLIST_LAST_USED BLIST_RETRY_ASC_C1
#define __BLIST_LAST_USED BLIST_SKIP_IO_HINTS
#define __BLIST_HIGH_UNUSED (~(__BLIST_LAST_USED | \
(__force blist_flags_t) \