openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

scsi: sd: Suppress spurious errors when WRITE SAME is being disabled 

The block layer code will split a large zeroout request into multiple bios
and if WRITE SAME is disabled because the storage device reports that it
does not support it (or support the length used), we can get an error
message from the block layer despite the setting of RQF_QUIET on the first
request.  This is because more than one request may have already been
submitted.

Fix this by setting RQF_QUIET when BLK_STS_TARGET is returned to fail the
request early, we don't need to log a message because we did not actually
submit the command to the device, and the block layer code will handle the
error by submitting individual write bios.

Link: https://lore.kernel.org/r/20201207221021.28243-1-emilne@redhat.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Ewan D. Milne 2020-12-07 17:10:21 -05:00 committed by Martin K. Petersen
parent 3b01d7ea4d
commit e5cc9002ca
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/scsi/sd.c
View File

@ -984,8 +984,10 @@ static blk_status_t sd_setup_write_zeroes_cmnd(struct scsi_cmnd *cmd)
}
}
if (sdp->no_write_same)
if (sdp->no_write_same) {
rq->rq_flags |= RQF_QUIET;
return BLK_STS_TARGET;
}
if (sdkp->ws16 || lba > 0xffffffff || nr_blocks > 0xffff)
return sd_setup_write_same16_cmnd(cmd, false);