user/sven/linux.git/include/linux/blkdev.h, branch v5.13.13

Merge tag 'block-5.13-2021-05-14' of git://git.kernel.dk/linux-block

2021-05-15T15:52:30Z

Pull block fixes from Jens Axboe: - Fix for shared tag set exit (Bart) - Correct ioctl range for zoned ioctls (Damien) - Removed dead/unused function (Lin) - Fix perf regression for shared tags (Ming) - Fix out-of-bounds issue with kyber and preemption (Omar) - BFQ merge fix (Paolo) - Two error handling fixes for nbd (Sun) - Fix weight update in blk-iocost (Tejun) - NVMe pull request (Christoph): - correct the check for using the inline bio in nvmet (Chaitanya Kulkarni) - demote unsupported command warnings (Chaitanya Kulkarni) - fix corruption due to double initializing ANA state (me, Hou Pu) - reset ns->file when open fails (Daniel Wagner) - fix a NULL deref when SEND is completed with error in nvmet-rdma (Michal Kalderon) - Fix kernel-doc warning (Bart) * tag 'block-5.13-2021-05-14' of git://git.kernel.dk/linux-block: block/partitions/efi.c: Fix the efi_partition() kernel-doc header blk-mq: Swap two calls in blk_mq_exit_queue() blk-mq: plug request for shared sbitmap nvmet: use new ana_log_size instead the old one nvmet: seset ns->file when open fails nbd: share nbd_put and return by goto put_nbd nbd: Fix NULL pointer in flush_workqueue blkdev.h: remove unused codes blk_account_rq block, bfq: avoid circular stable merges blk-iocost: fix weight updates of inner active iocgs nvmet: demote fabrics cmd parse err msg to debug nvmet: use helper to remove the duplicate code nvmet: demote discovery cmd parse err msg to debug nvmet-rdma: Fix NULL deref when SEND is completed with error nvmet: fix inline bio check for passthru nvmet: fix inline bio check for bdev-ns nvme-multipath: fix double initialization of ANA state kyber: fix out of bounds access when preempted block: uapi: fix comment about block device ioctl

blkdev.h: remove unused codes blk_account_rq

2021-05-12T13:40:32Z

Last users of blk_account_rq gone with patch commit a1ce35fa49852db ("block: remove dead elevator code") and now it gets no caller, it can be safely removed. Signed-off-by: Lin Feng Link: https://lore.kernel.org/r/20210512100124.173769-1-linf@wangsu.com Signed-off-by: Jens Axboe

Merge tag 'block-5.13-2021-05-09' of git://git.kernel.dk/linux-block

2021-05-09T20:25:14Z

Pull block fix from Jens Axboe: "Turns out the bio max size change still has issues, so let's get it reverted for 5.13-rc1. We'll shake out the issues there and defer it to 5.14 instead" * tag 'block-5.13-2021-05-09' of git://git.kernel.dk/linux-block: Revert "bio: limit bio max size"

Revert "bio: limit bio max size"

2021-05-09T03:49:48Z

This reverts commit cd2c7545ae1beac3b6aae033c7f31193b3255946. Alex reports that the commit causes corruption with LUKS on ext4. Revert it for now so that this can be investigated properly. Link: https://lore.kernel.org/linux-block/1620493841.bxdq8r5haw.none@localhost/ Reported-by: Alex Xu (Hello71) Signed-off-by: Jens Axboe

Merge tag 'block-5.13-2021-05-07' of git://git.kernel.dk/linux-block

2021-05-07T18:35:12Z

Pull block fixes from Jens Axboe: - dasd spelling fixes (Bhaskar) - Limit bio max size on multi-page bvecs to the hardware limit, to avoid overly large bio's (and hence latencies). Originally queued for the merge window, but needed a fix and was dropped from the initial pull (Changheun) - NVMe pull request (Christoph): - reset the bdev to ns head when failover (Daniel Wagner) - remove unsupported command noise (Keith Busch) - misc passthrough improvements (Kanchan Joshi) - fix controller ioctl through ns_head (Minwoo Im) - fix controller timeouts during reset (Tao Chiu) - rnbd fixes/cleanups (Gioh, Md, Dima) - Fix iov_iter re-expansion (yangerkun) * tag 'block-5.13-2021-05-07' of git://git.kernel.dk/linux-block: block: reexpand iov_iter after read/write nvmet: remove unsupported command noise nvme-multipath: reset bdev to ns head when failover nvme-pci: fix controller reset hang when racing with nvme_timeout nvme: move the fabrics queue ready check routines to core nvme: avoid memset for passthrough requests nvme: add nvme_get_ns helper nvme: fix controller ioctl through ns_head bio: limit bio max size RDMA/rtrs: fix uninitialized symbol 'cnt' s390: dasd: Mundane spelling fixes block/rnbd: Remove all likely and unlikely block/rnbd-clt: Check the return value of the function rtrs_clt_query block/rnbd: Fix style issues block/rnbd-clt: Change queue_depth type in rnbd_clt_session to size_t

include: remove pagemap.h from blkdev.h

2021-05-07T02:24:11Z

My UEK-derived config has 1030 files depending on pagemap.h before this change. Afterwards, just 326 files need to be rebuilt when I touch pagemap.h. I think blkdev.h is probably included too widely, but untangling that dependency is harder and this solves my problem. x86 allmodconfig builds, but there may be implicit include problems on other architectures. Link: https://lkml.kernel.org/r/20210309195747.283796-1-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Dan Williams [nvdimm] Acked-by: Jens Axboe [block] Reviewed-by: Christoph Hellwig Acked-by: Coly Li [bcache] Acked-by: Martin K. Petersen [scsi] Reviewed-by: William Kucharski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bio: limit bio max size

2021-05-03T17:00:11Z

bio size can grow up to 4GB when muli-page bvec is enabled. but sometimes it would lead to inefficient behaviors. in case of large chunk direct I/O, - 32MB chunk read in user space - all pages for 32MB would be merged to a bio structure if the pages physical addresses are contiguous. it makes some delay to submit until merge complete. bio max size should be limited to a proper size. When 32MB chunk read with direct I/O option is coming from userspace, kernel behavior is below now in do_direct_IO() loop. it's timeline. | bio merge for 32MB. total 8,192 pages are merged. | total elapsed time is over 2ms. |------------------ ... ----------------------->| | 8,192 pages merged a bio. | at this time, first bio submit is done. | 1 bio is split to 32 read request and issue. |---------------> |---------------> |---------------> ...... |---------------> |--------------->| total 19ms elapsed to complete 32MB read done from device. | If bio max size is limited with 1MB, behavior is changed below. | bio merge for 1MB. 256 pages are merged for each bio. | total 32 bio will be made. | total elapsed time is over 2ms. it's same. | but, first bio submit timing is fast. about 100us. |--->|--->|--->|---> ... -->|--->|--->|--->|--->| | 256 pages merged a bio. | at this time, first bio submit is done. | and 1 read request is issued for 1 bio. |---------------> |---------------> |---------------> ...... |---------------> |--------------->| total 17ms elapsed to complete 32MB read done from device. | As a result, read request issue timing is faster if bio max size is limited. Current kernel behavior with multipage bvec, super large bio can be created. And it lead to delay first I/O request issue. Signed-off-by: Changheun Lee Reviewed-by: Bart Van Assche Link: https://lore.kernel.org/r/20210503095203.29076-1-nanich.lee@samsung.com Signed-off-by: Jens Axboe

Merge tag 'for-5.13/drivers-2021-04-27' of git://git.kernel.dk/linux-block

2021-04-28T21:39:37Z

Pull block driver updates from Jens Axboe: - MD changes via Song: - raid5 POWER fix - raid1 failure fix - UAF fix for md cluster - mddev_find_or_alloc() clean up - Fix NULL pointer deref with external bitmap - Performance improvement for raid10 discard requests - Fix missing information of /proc/mdstat - rsxx const qualifier removal (Arnd) - Expose allocated brd pages (Calvin) - rnbd via Gioh Kim: - Change maintainer - Change domain address of maintainers' email - Add polling IO mode and document update - Fix memory leak and some bug detected by static code analysis tools - Code refactoring - Series of floppy cleanups/fixes (Denis) - s390 dasd fixes (Julian) - kerneldoc fixes (Lee) - null_blk double free (Lv) - null_blk virtual boundary addition (Max) - Remove xsysace driver (Michal) - umem driver removal (Davidlohr) - ataflop fixes (Dan) - Revalidate disk removal (Christoph) - Bounce buffer cleanups (Christoph) - Mark lightnvm as deprecated (Christoph) - mtip32xx init cleanups (Shixin) - Various fixes (Tian, Gustavo, Coly, Yang, Zhang, Zhiqiang) * tag 'for-5.13/drivers-2021-04-27' of git://git.kernel.dk/linux-block: (143 commits) async_xor: increase src_offs when dropping destination page drivers/block/null_blk/main: Fix a double free in null_init. md/raid1: properly indicate failure when ending a failed write request md-cluster: fix use-after-free issue when removing rdev nvme: introduce generic per-namespace chardev nvme: cleanup nvme_configure_apst nvme: do not try to reconfigure APST when the controller is not live nvme: add 'kato' sysfs attribute nvme: sanitize KATO setting nvmet: avoid queuing keep-alive timer if it is disabled brd: expose number of allocated pages in debugfs ataflop: fix off by one in ataflop_probe() ataflop: potential out of bounds in do_format() drbd: Fix fall-through warnings for Clang block/rnbd: Use strscpy instead of strlcpy block/rnbd-clt-sysfs: Remove copy buffer overlap in rnbd_clt_get_path_name block/rnbd-clt: Remove max_segment_size block/rnbd-clt: Generate kobject_uevent when the rnbd device state changes block/rnbd-srv: Remove unused arguments of rnbd_srv_rdma_ev Documentation/ABI/rnbd-clt: Add description for nr_poll_queues ...

Merge tag 'for-5.13/block-2021-04-27' of git://git.kernel.dk/linux-block

2021-04-28T21:27:12Z

Pull block updates from Jens Axboe: "Pretty quiet round this time, which is nice. In detail: - Series revamping bounce buffer support (Christoph) - Dead code removal (Christoph, Bart) - Partition iteration revamp, now using xarray (Christoph) - Passthrough request scheduler improvements (Lin) - Series of BFQ improvements (Paolo) - Fix ioprio task iteration (Peter) - Various little tweaks and fixes (Tejun, Saravanan, Bhaskar, Max, Nikolay)" * tag 'for-5.13/block-2021-04-27' of git://git.kernel.dk/linux-block: (41 commits) blk-iocost: don't ignore vrate_min on QD contention blk-mq: Fix spurious debugfs directory creation during initialization bfq/mq-deadline: remove redundant check for passthrough request blk-mq: bypass IO scheduler's limit_depth for passthrough request block: Remove an obsolete comment from sg_io() block: move bio_list_copy_data to pktcdvd block: remove zero_fill_bio_iter block: add queue_to_disk() to get gendisk from request_queue block: remove an incorrect check from blk_rq_append_bio block: initialize ret in bdev_disk_changed block: Fix sys_ioprio_set(.which=IOPRIO_WHO_PGRP) task iteration block: remove disk_part_iter block: simplify diskstats_show block: simplify show_partition block: simplify printk_all_partitions block: simplify partition_overlaps block: simplify partition removal block: take bd_mutex around delete_partitions in del_gendisk block: refactor blk_drop_partitions block: move more syncing and invalidation to delete_partition ...

blk-mq: bypass IO scheduler's limit_depth for passthrough request

2021-04-16T12:06:49Z

Commit 01e99aeca39796003 ("blk-mq: insert passthrough request into hctx->dispatch directly") gives high priority to passthrough requests and bypass underlying IO scheduler. But as we allocate tag for such request it still runs io-scheduler's callback limit_depth, while we really want is to give full sbitmap-depth capabity to such request for acquiring available tag. blktrace shows PC requests(dmraid -s -c -i) hit bfq's limit_depth: 8,0 2 0 0.000000000 39952 1,0 m N bfq [bfq_limit_depth] wr_busy 0 sync 0 depth 8 8,0 2 1 0.000008134 39952 D R 4 [dmraid] 8,0 2 2 0.000021538 24 C R [0] 8,0 2 0 0.000035442 39952 1,0 m N bfq [bfq_limit_depth] wr_busy 0 sync 0 depth 8 8,0 2 3 0.000038813 39952 D R 24 [dmraid] 8,0 2 4 0.000044356 24 C R [0] This patch introduce a new wrapper to make code not that ugly. Signed-off-by: Lin Feng Reviewed-by: Ming Lei Link: https://lore.kernel.org/r/20210415033920.213963-1-linf@wangsu.com Signed-off-by: Jens Axboe