- 10 Feb, 2021 3 commits
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Damien Le Moal authored
Use blk_queue_set_zoned() to set a nullb device zone model instead of directly assigning the device queue zoned limit. This initialization of the devicve zoned model as well as the setup of the queue flag QUEUE_FLAG_ZONE_RESETALL and of the device queue elevator feature are moved from null_init_zoned_dev() to null_register_zoned_dev() so that the initialization of the queue limits is done when the gendisk of the nullb device is available. Signed-off-by:
Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by:
Johannes Thumshirn <johannes.thumshirn@edc.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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Damien Le Moal authored
For a zoned namespace, in nvme_update_ns_info(), call nvme_update_zone_info() after executing nvme_update_disk_info() so that the namespace queue logical and physical block size limits are set. This allows setting the namespace queue max_zone_append_sectors limit in nvme_update_zone_info() instead of nvme_revalidate_zones(), simplifying this function. Also use blk_queue_set_zoned() to set the namespace zoned model. Signed-off-by:
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Damien Le Moal authored
The description of the zone_append_max_bytes sysfs queue attribute is missing from Documentation/block/queue-sysfs.rst. Add it. Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by:
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- 08 Feb, 2021 11 commits
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Christoph Hellwig authored
Instead of encoding of the bvec pool using magic bio flags, just use a helper to find the pool based on the max_vecs value. Signed-off-by:
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Christoph Hellwig authored
A bio allocated by bio_alloc_bioset comes pre-zeroed, no need to clear random fields. Signed-off-by:
Song Liu <song@kernel.org> Signed-off-by:
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Christoph Hellwig authored
bio_iov_bvec_set clones the bio_vecs from the iter, and thus should be treated like a cloned bio in every respect. That also includes not touching bi_max_vecs as that is a property of the bio allocation and not its current payload. Signed-off-by:
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Christoph Hellwig authored
bio_iov_bvec_set assigns the foreign bvec, so setting the NO_PAGE_REF directly there seems like the best fit. Signed-off-by:
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Christoph Hellwig authored
Remove a pointless layer of indentation after a return statement. Signed-off-by:
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Christoph Hellwig authored
The bi_max_vecs and bi_vcnt fields are defined as unsigned short, so don't allow passing larger values in. Signed-off-by:
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Christoph Hellwig authored
All bios with up to 4 bvecs use the inline bvecs in the bio itself, so don't bother to define bvec_slabs entries for them. Also decruftify the bvec_slabs definition and initialization while we're at it. Signed-off-by:
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Christoph Hellwig authored
Avoid the pointless goto by trying the slab allocation first and falling through to the mempool. Signed-off-by:
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Christoph Hellwig authored
Clean up bvec_alloc a little by factoring out a helper for the gfp_t manipulations. Signed-off-by:
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Christoph Hellwig authored
struct biovec_slab is only used inside of bio.c, so move it there. Signed-off-by:
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Christoph Hellwig authored
bvec_alloc always uses biovec_slabs, and thus always needs to use the same number of inline vecs. Share a single definition for the data and integrity bvecs. Signed-off-by:
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- 02 Feb, 2021 1 commit
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Ming Lei authored
bio_init() clears bio instance, so the bvec index has to be set after bio_init(), otherwise bio->bi_io_vec may be leaked. Fixes: 3175199a ("block: split bio_kmalloc from bio_alloc_bioset") Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com> Cc: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Cc: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by:
Ming Lei <ming.lei@redhat.com> Signed-off-by:
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- 01 Feb, 2021 2 commits
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Christoph Hellwig authored
Make the read-only check in restart_array identical to the other two read-only checks. Signed-off-by:
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Christoph Hellwig authored
->meta_bdev is optional and not set for most arrays. Add a rdev_read_only helper that calls bdev_read_only for both devices in a safe way. Fixes: 6f0d9689 ("block: remove the NULL bdev check in bdev_read_only") Reported-by:
Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by:
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- 29 Jan, 2021 2 commits
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Lukas Bulwahn authored
Commit 684da762 ("block: remove unnecessary argument from blk_execute_rq") changes the signature of blk_execute_rq(), but misses to adjust its kernel-doc. Hence, make htmldocs warns on ./block/blk-exec.c:78: warning: Excess function parameter 'q' description in 'blk_execute_rq' Drop removed argument from kernel-doc of blk_execute_rq() as well. Signed-off-by:
Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by:
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Lukas Bulwahn authored
Commit 52f019d4 ("block: add a hard-readonly flag to struct gendisk") provides some kernel-doc for set_disk_ro(), but introduces a small typo. Hence, make htmldocs warns on ./block/genhd.c:1441: warning: Function parameter or member 'read_only' not described in 'set_disk_ro' warning: Excess function parameter 'ready_only' description in 'set_disk_ro' Remove that typo in the kernel-doc for set_disk_ro(). Signed-off-by:
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- 28 Jan, 2021 1 commit
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Baolin Wang authored
Remove the obsolete 'MAX_KEY_LEN' macro. Signed-off-by:
Baolin Wang <baolin.wang@linux.alibaba.com> Signed-off-by:
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- 27 Jan, 2021 20 commits
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Chaitanya Kulkarni authored
The nvme-core sets the bdev to NULL when admin comamnd is issued from IOCTL in the following path e.g. nvme list :- block_ioctl() blkdev_ioctl() nvme_ioctl() nvme_user_cmd() nvme_submit_user_cmd() The commit 309dca30 ("block: store a block_device pointer in struct bio") now uses bdev unconditionally in the macro bio_set_dev() and assumes that bdev value is not NULL which results in the following crash in since thats where bdev is actually accessed :- void bio_associate_blkg_from_css(struct bio *bio, struct cgroup_subsys_state *css) { if (bio->bi_blkg) blkg_put(bio->bi_blkg); if (css && css->parent) { bio->bi_blkg = blkg_tryget_closest(bio, css); } else { --------------> blkg_get(bio->bi_bdev->bd_disk->queue->root_blkg); bio->bi_blkg = bio->bi_bdev->bd_disk->queue->root_blkg; } } EXPORT_SYMBOL_GPL(bio_associate_blkg_from_css); [ 345.385947] BUG: kernel NULL pointer dereference, address: 0000000000000690 [ 345.387103] #PF: supervisor read access in kernel mode [ 345.387894] #PF: error_code(0x0000) - not-present page [ 345.388756] PGD 162a2b067 P4D 162a2b067 PUD 1633eb067 PMD 0 [ 345.389625] Oops: 0000 [#1] SMP NOPTI [ 345.390206] CPU: 15 PID: 4100 Comm: nvme Tainted: G OE 5.11.0-rc5blk+ #141 [ 345.391377] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba52764 [ 345.393074] RIP: 0010:bio_associate_blkg_from_css.cold.47+0x58/0x21f [ 345.396362] RSP: 0018:ffffc90000dbbce8 EFLAGS: 00010246 [ 345.397078] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000027 [ 345.398114] RDX: 0000000000000000 RSI: ffff888813be91f0 RDI: ffff888813be91f8 [ 345.399039] RBP: ffffc90000dbbd30 R08: 0000000000000001 R09: 0000000000000001 [ 345.399950] R10: 0000000064c66670 R11: 00000000ef955201 R12: ffff888812d32800 [ 345.401031] R13: 0000000000000000 R14: ffff888113e51540 R15: ffff888113e51540 [ 345.401976] FS: 00007f3747f1d780(0000) GS:ffff888813a00000(0000) knlGS:0000000000000000 [ 345.402997] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 345.403737] CR2: 0000000000000690 CR3: 000000081a4bc000 CR4: 00000000003506e0 [ 345.404685] Call Trace: [ 345.405031] bio_associate_blkg+0x71/0x1c0 [ 345.405649] nvme_submit_user_cmd+0x1aa/0x38e [nvme_core] [ 345.406348] nvme_user_cmd.isra.73.cold.98+0x54/0x92 [nvme_core] [ 345.407117] nvme_ioctl+0x226/0x260 [nvme_core] [ 345.407707] blkdev_ioctl+0x1c8/0x2b0 [ 345.408183] block_ioctl+0x3f/0x50 [ 345.408627] __x64_sys_ioctl+0x84/0xc0 [ 345.409117] do_syscall_64+0x33/0x40 [ 345.409592] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 345.410233] RIP: 0033:0x7f3747632107 [ 345.413125] RSP: 002b:00007ffe461b6648 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 345.414086] RAX: ffffffffffffffda RBX: 00000000007b7fd0 RCX: 00007f3747632107 [ 345.414998] RDX: 00007ffe461b6650 RSI: 00000000c0484e41 RDI: 0000000000000004 [ 345.415966] RBP: 0000000000000004 R08: 00000000007b7fe8 R09: 00000000007b9080 [ 345.416883] R10: 00007ffe461b62c0 R11: 0000000000000206 R12: 00000000007b7fd0 [ 345.417808] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 Add a NULL check before we set the bdev for bio. This issue is found on block/for-next tree. Fixes: 309dca30 ("block: store a block_device pointer in struct bio") Signed-off-by: -
Jens Axboe authored
Current tree spews this on compile: mm/swapfile.c:2290:17: warning: ‘map_swap_entry’ defined but not used [-Wunused-function] 2290 | static sector_t map_swap_entry(swp_entry_t entry, struct block_device **bdev) | ^~~~~~~~~~~~~~ if !CONFIG_HIBERNATION, as we don't use the function unless we have that config option set. Fixes: 48d15436 ("mm: remove get_swap_bio") Signed-off-by: -
Christoph Hellwig authored
Just reuse the block_device and sector from the swap_info structure, just as used by the SWP_SYNCHRONOUS path. Also remove the checks for NULL returns from bio_alloc as that can't happen for sleeping allocations. Signed-off-by:
Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by:
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Christoph Hellwig authored
bio_alloc never returns NULL when it can sleep. Signed-off-by:
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Christoph Hellwig authored
bio_alloc never returns NULL when it can sleep. Signed-off-by:
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Christoph Hellwig authored
Refactor raid5_read_one_chunk so that all simple checks are done before allocating the bio. Signed-off-by:
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Christoph Hellwig authored
md_bio_alloc_sync is never called with a NULL mddev, and ->sync_set is initialized in md_run, so it always must be initialized as well. Just open code the remaining call to bio_alloc_bioset. Signed-off-by:
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Christoph Hellwig authored
Use an on-stack bio and biovec for the single page synchronous I/O. Signed-off-by:
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Christoph Hellwig authored
bio_alloc_mddev is never called with a NULL mddev, and ->bio_set is initialized in md_run, so it always must be initialized as well. Just open code the remaining call to bio_alloc_bioset. Signed-off-by:
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Christoph Hellwig authored
Open code drbd_req_make_private_bio in the two callers to prepare for further changes. Also don't bother to initialize bi_next as the bio code already does that that. Signed-off-by:
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Christoph Hellwig authored
Given that drbd_md_io_bio_set is initialized during module initialization and the module fails to load if the initialization fails there is no need to fall back to plain bio_alloc. Signed-off-by:
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Christoph Hellwig authored
Sleeping bio allocations do not fail, which means that injecting an error into sleeping bio allocations is a little silly. Signed-off-by:
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Christoph Hellwig authored
Use the blkdev_issue_flush helper instead of duplicating it. Signed-off-by:
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Christoph Hellwig authored
Use blkdev_issue_flush instead of open coding it. Signed-off-by:
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Christoph Hellwig authored
There is no point in allocating memory for a synchronous flush. Signed-off-by:
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Christoph Hellwig authored
bio_kmalloc shares almost no logic with the bio_set based fast path in bio_alloc_bioset. Split it into an entirely separate implementation. Signed-off-by:
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Christoph Hellwig authored
Use bio_kmalloc instead of open coding it. Signed-off-by:
Eric Biggers <ebiggers@google.com> Reviewed-by:
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Christoph Hellwig authored
Use bio_kmalloc instead of open coding it. Signed-off-by:
Josef Bacik <josef@toxicpanda.com> Reviewed-by:
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Christoph Hellwig authored
Use bio_alloc instead of open coding it. Signed-off-by:
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Jan Kara authored
Currently whenever bfq queue has a request queued we add now - last_completion_time to the think time statistics. This is however misleading in case the process is able to submit several requests in parallel because e.g. if the queue has request completed at time T0 and then queues new requests at times T1, T2, then we will add T1-T0 and T2-T0 to think time statistics which just doesn't make any sence (the queue's think time is penalized by the queue being able to submit more IO). So add to think time statistics only time intervals when the queue had no IO pending. Signed-off-by:
Jan Kara <jack@suse.cz> Acked-by:
Paolo Valente <paolo.valente@linaro.org> [axboe: fix whitespace on empty line] Signed-off-by:
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