kernel/block/blk-sysfs.c, branch linux-5.1.y

block: add BLK_MQ_POLL_CLASSIC for hybrid poll and return EINVAL for unexpected value

2019-03-20T20:02:07Z

For q->poll_nsec == -1, means doing classic poll, not hybrid poll. We introduce a new flag BLK_MQ_POLL_CLASSIC to replace -1, which may make code much easier to read. Additionally, since val is an int obtained with kstrtoint(), val can be a negative value other than -1, so return -EINVAL for that case. Thanks to Damien Le Moal for some good suggestion. Reviewed-by: Damien Le Moal Signed-off-by: Yufen Yu Signed-off-by: Jens Axboe

block: avoid setting wbt_lat_usec to current value

2019-02-11T15:20:14Z

There's no reason to set wbt min lat and freeze request queue if current value is the same. Reviewed-by: Johannes Thumshirn Signed-off-by: Aleksei Zakharov Signed-off-by: Jens Axboe

blk-sysfs: Rework documention of __blk_release_queue

2019-02-10T17:23:29Z

The Notes section of the comment was removed, because now blk_release_queue can only be executed from blk_cleanup_queue (being called when the q->kobj reaches zero), and also blk_init_queue was removed in a1ce35fa4985. Signed-off-by: Marcos Paulo de Souza Signed-off-by: Jens Axboe

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2018-12-28T22:48:06Z

Pull SCSI updates from James Bottomley: "This is mostly update of the usual drivers: smarpqi, lpfc, qedi, megaraid_sas, libsas, zfcp, mpt3sas, hisi_sas. Additionally, we have a pile of annotation, unused variable and minor updates. The big API change is the updates for Christoph's DMA rework which include removing the DISABLE_CLUSTERING flag. And finally there are a couple of target tree updates" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (259 commits) scsi: isci: request: mark expected switch fall-through scsi: isci: remote_node_context: mark expected switch fall-throughs scsi: isci: remote_device: Mark expected switch fall-throughs scsi: isci: phy: Mark expected switch fall-through scsi: iscsi: Capture iscsi debug messages using tracepoints scsi: myrb: Mark expected switch fall-throughs scsi: megaraid: fix out-of-bound array accesses scsi: mpt3sas: mpt3sas_scsih: Mark expected switch fall-through scsi: fcoe: remove set but not used variable 'port' scsi: smartpqi: call pqi_free_interrupts() in pqi_shutdown() scsi: smartpqi: fix build warnings scsi: smartpqi: update driver version scsi: smartpqi: add ofa support scsi: smartpqi: increase fw status register read timeout scsi: smartpqi: bump driver version scsi: smartpqi: add smp_utils support scsi: smartpqi: correct lun reset issues scsi: smartpqi: correct volume status scsi: smartpqi: do not offline disks for transient did no connect conditions scsi: smartpqi: allow for larger raid maps ...

scsi: block: remove the cluster flag

2018-12-19T04:39:26Z

Now that the the SCSI layer replaced the use of the cluster flag with segment size limits and the DMA boundary we can remove the cluster flag from the block layer. Signed-off-by: Christoph Hellwig Reviewed-by: Jens Axboe Signed-off-by: Martin K. Petersen

blk-mq: enable IO poll if .nr_queues of type poll > 0

2018-12-18T04:35:07Z

The queue mapping of type poll only exists when set->map[HCTX_TYPE_POLL].nr_queues is bigger than zero, so enhance the constraint by checking .nr_queues of type poll before enabling IO poll. Otherwise IO race & timeout can be observed when running block/007. Cc: Jeff Moyer Cc: Christoph Hellwig Signed-off-by: Ming Lei Signed-off-by: Jens Axboe

block: only allow polling if a poll queue_map exists

2018-12-04T18:38:19Z

This avoids having to have differnet mq_ops for different setups with or without poll queues. Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: add io timeout to sysfs

2018-11-28T16:08:28Z

Give a interface to adjust io timeout(ms) by device. Signed-off-by: Weiping Zhang Signed-off-by: Jens Axboe

block: add queue_is_mq() helper

2018-11-16T15:34:06Z

Various spots check for q->mq_ops being non-NULL, but provide a helper to do this instead. Where the ->mq_ops != NULL check is redundant, remove it. Since mq == rq-based now that legacy is gone, get rid of the queue_is_rq_based() and just use queue_is_mq() everywhere. Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: remove the queue_lock indirection

2018-11-15T19:17:28Z

With the legacy request path gone there is no good reason to keep queue_lock as a pointer, we can always use the embedded lock now. Reviewed-by: Hannes Reinecke Signed-off-by: Christoph Hellwig Fixed floppy and blk-cgroup missing conversions and half done edits. Signed-off-by: Jens Axboe