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| author | Bart Van Assche | 2017-08-31 01:58:40 +0200 |
|---|---|---|
| committer | Martin K. Petersen | 2017-09-01 05:07:49 +0200 |
| commit | 832889f5ed45ec90c76f6eb97e64baf845929007 (patch) | |
| tree | bd841e01a8b28d9000bfd2930ad74918b6100c17 /drivers/scsi/scsi_debugfs.c | |
| parent | scsi: Call scsi_initialize_rq() for filesystem requests (diff) | |
| download | kernel-qcow2-linux-832889f5ed45ec90c76f6eb97e64baf845929007.tar.gz kernel-qcow2-linux-832889f5ed45ec90c76f6eb97e64baf845929007.tar.xz kernel-qcow2-linux-832889f5ed45ec90c76f6eb97e64baf845929007.zip | |
scsi: Improve requeuing behavior
Requests are unprepared and reprepared when being requeued. Avoid that
requeuing resets .jiffies_at_alloc and .retries by initializing these
two member variables from inside scsi_initialize_rq() and by preserving
both member variables when preparing a request. This patch affects the
requeuing behavior of both the legacy scsi and the scsi-mq code paths.
Reported-by: Brian King <brking@linux.vnet.ibm.com>
References: https://lkml.org/lkml/2017/8/18/923 ("Re: [BUG][bisected 270065e] linux-next fails to boot on powerpc")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Brian King <brking@linux.vnet.ibm.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_debugfs.c')
0 files changed, 0 insertions, 0 deletions