From: John Garry <john.g.garry@oracle.com>
To: jejb@linux.ibm.com, martin.petersen@oracle.com
Cc: bvanassche@acm.org, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org,
John Garry <john.g.garry@oracle.com>
Subject: [PATCH] scsi: sd: Only print updates to permanent stream count
Date: Fri, 12 Apr 2024 09:44:07 +0000 [thread overview]
Message-ID: <20240412094407.496251-1-john.g.garry@oracle.com> (raw)
Just rescanning a partition causes a print similar to the following to
appear:
[ 1.484964] sd 0:0:0:0: [sda] permanent stream count = 5
This is bothersome, so only print this message for an update.
Fixes: 4f53138fffc2b ("scsi: sd: Translate data lifetime information")
Signed-off-by: John Garry <john.g.garry@oracle.com>
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 58fdf679341d..65cdc8b77e35 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -3120,6 +3120,7 @@ static void sd_read_io_hints(struct scsi_disk *sdkp, unsigned char *buffer)
{
struct scsi_device *sdp = sdkp->device;
const struct scsi_io_group_descriptor *desc, *start, *end;
+ u16 permanent_stream_count_old;
struct scsi_sense_hdr sshdr;
struct scsi_mode_data data;
int res;
@@ -3140,12 +3141,13 @@ static void sd_read_io_hints(struct scsi_disk *sdkp, unsigned char *buffer)
for (desc = start; desc < end; desc++)
if (!desc->st_enble || !sd_is_perm_stream(sdkp, desc - start))
break;
+ permanent_stream_count_old = sdkp->permanent_stream_count;
sdkp->permanent_stream_count = desc - start;
if (sdkp->rscs && sdkp->permanent_stream_count < 2)
sd_printk(KERN_INFO, sdkp,
"Unexpected: RSCS has been set and the permanent stream count is %u\n",
sdkp->permanent_stream_count);
- else if (sdkp->permanent_stream_count)
+ else if (sdkp->permanent_stream_count != permanent_stream_count_old)
sd_printk(KERN_INFO, sdkp, "permanent stream count = %d\n",
sdkp->permanent_stream_count);
}
--
2.31.1
next reply other threads:[~2024-04-12 9:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-12 9:44 John Garry [this message]
2024-04-12 22:41 ` [PATCH] scsi: sd: Only print updates to permanent stream count Bart Van Assche
2024-04-25 1:56 ` Martin K. Petersen
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