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74d46992e0
linux/block
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Christoph Hellwig 74d46992e0 block: replace bi_bdev with a gendisk pointer and partitions index 
This way we don't need a block_device structure to submit I/O.  The
block_device has different life time rules from the gendisk and
request_queue and is usually only available when the block device node
is open.  Other callers need to explicitly create one (e.g. the lightnvm
passthrough code, or the new nvme multipathing code).

For the actual I/O path all that we need is the gendisk, which exists
once per block device.  But given that the block layer also does
partition remapping we additionally need a partition index, which is
used for said remapping in generic_make_request.

Note that all the block drivers generally want request_queue or
sometimes the gendisk, so this removes a layer of indirection all
over the stack.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-08-23 12:49:55 -06:00
..
partitions partitions/ldm: switch to use uuid_t 2017-06-05 16:59:14 +02:00
badblocks.c block: Add fallthrough markers to switch statements 2017-06-21 11:46:07 -06:00
bfq-cgroup.c block, bfq: access and cache blkg data only when safe 2017-06-08 09:51:10 -06:00
bfq-iosched.c block, bfq: boost throughput with flash-based non-queueing devices 2017-08-11 08:58:03 -06:00
bfq-iosched.h block,bfq: refactor device-idling logic 2017-08-11 08:58:02 -06:00
bfq-wf2q.c bfq: fix typos in comments about B-WF2Q+ algorithm 2017-07-12 08:32:02 -06:00
bio-integrity.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
bio.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
blk-cgroup.c block: Avoid that blk_exit_rl() triggers a use-after-free 2017-06-01 13:07:55 -06:00
blk-core.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
blk-exec.c block: introduce new block status code type 2017-06-09 09:27:32 -06:00
blk-flush.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
blk-integrity.c block: switch bios to blk_status_t 2017-06-09 09:27:32 -06:00
blk-ioc.c Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-03-03 10:53:35 -08:00
blk-lib.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
blk-map.c blk-map: call blk_queue_bounce from blk_rq_append_bio 2017-06-27 12:13:21 -06:00
blk-merge.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
blk-mq-cpumap.c blk-mq: map queues to all present CPUs 2017-07-24 10:01:31 -06:00
blk-mq-debugfs.c blk-mq-debugfs: Declare a local symbol static 2017-08-18 08:36:58 -06:00
blk-mq-debugfs.h mq-deadline: add debugfs attributes 2017-05-04 08:25:17 -06:00
blk-mq-pci.c blk-mq-pci: Fix two spelling mistakes 2017-03-29 11:09:51 -06:00
blk-mq-sched.c blk-mq-sched: fix performance regression of mq-deadline 2017-07-03 16:54:09 -06:00
blk-mq-sched.h Merge commit '8e8320c9315c' into for-4.13/block 2017-06-22 21:55:24 -06:00
blk-mq-sysfs.c blk-mq: untangle debugfs and sysfs 2017-05-04 08:24:13 -06:00
blk-mq-tag.c blk-mq: Make blk_mq_reinit_tagset() calls easier to read 2017-08-18 08:36:58 -06:00
blk-mq-tag.h blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset 2017-03-02 08:56:04 -07:00
blk-mq-virtio.c blk-mq: provide a default queue mapping for virtio device 2017-02-27 20:54:05 +02:00
blk-mq.c block: Fix two comments that refer to .queue_rq() return values 2017-08-18 08:36:58 -06:00
blk-mq.h blk-mq: provide internal in-flight variant 2017-08-09 13:09:28 -06:00
blk-settings.c block: Warn if blk_queue_rq_timed_out() is called for a blk-mq queue 2017-08-23 12:02:30 -06:00
blk-softirq.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/topology.h> 2017-03-02 08:42:26 +01:00
blk-stat.c blk-stat: don't use this_cpu_ptr() in a preemptable section 2017-05-10 07:40:18 -06:00
blk-stat.h blk-stat: kill blk_stat_rq_ddir() 2017-04-21 07:56:23 -06:00
blk-sysfs.c block: Fix a blk_exit_rl() regression 2017-06-14 13:27:50 -06:00
blk-tag.c block: Unexport blk_queue_end_tag() 2017-08-18 08:36:58 -06:00
blk-throttle.c block: use standard blktrace API to output cgroup info for debug notes 2017-07-29 09:00:03 -06:00
blk-timeout.c block: Check locking assumptions at runtime 2017-06-20 19:27:14 -06:00
blk-wbt.c sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming 2017-06-20 12:19:14 +02:00
blk-wbt.h block: Make writeback throttling defaults consistent for SQ devices 2017-04-19 08:49:03 -06:00
blk-zoned.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
blk.h block: add a __disk_get_part helper 2017-08-23 12:49:52 -06:00
bounce.c block: remove the queue_bounce_pfn helper 2017-06-27 12:13:45 -06:00
bsg-lib.c block: introduce new block status code type 2017-06-09 09:27:32 -06:00
bsg.c block: Make most scsi_req_init() calls implicit 2017-06-20 19:27:14 -06:00
cfq-iosched.c cfq: Give a chance for arming slice idle timer in case of group_idle 2017-08-11 09:00:26 -06:00
cmdline-parser.c
compat_ioctl.c compat_hdio_ioctl: get rid of set_fs() 2017-06-29 18:17:52 -04:00
deadline-iosched.c block: enumify ELEVATOR_*_MERGE 2017-02-08 13:43:06 -07:00
elevator.c block: Add fallthrough markers to switch statements 2017-06-21 11:46:07 -06:00
genhd.c block: add a __disk_get_part helper 2017-08-23 12:49:52 -06:00
ioctl.c block: remove the discard_zeroes_data flag 2017-04-08 11:25:38 -06:00
ioprio.c block: Add fallthrough markers to switch statements 2017-06-21 11:46:07 -06:00
Kconfig Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm 2017-05-12 15:43:10 -07:00
Kconfig.iosched block, bfq: add full hierarchical scheduling and cgroups support 2017-04-19 08:30:26 -06:00
kyber-iosched.c Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-07-03 13:08:04 -07:00
Makefile block, bfq: split bfq-iosched.c into multiple source files 2017-04-19 08:48:24 -06:00
mq-deadline.c mq-deadline: add debugfs attributes 2017-05-04 08:25:17 -06:00
noop-iosched.c block: move existing elevator ops to union 2017-01-17 10:03:33 -07:00
opal_proto.h block/sed-opal: allocate struct opal_dev dynamically 2017-02-17 12:41:47 -07:00
partition-generic.c genhd: Annotate all part and part_tbl pointer dereferences 2017-08-18 08:36:58 -06:00
scsi_ioctl.c block: Change argument type of scsi_req_init() 2017-06-20 19:27:14 -06:00
sed-opal.c block: sed-opal: Tone down all the pr_* to debugs 2017-04-07 14:24:16 -06:00
t10-pi.c t10-pi: Move opencoded contants to common header 2017-07-03 16:56:25 -06:00