Revision b22fa62a35d7f2029d757a518d78041822b7c7c1 authored by Pavel Begunkov on 21 October 2021, 12:20:29 UTC, committed by Jens Axboe on 21 October 2021, 17:19:38 UTC
Another change to the API io-wq worker limitation API added in 5.15, apply the limit to all prior users that already registered a tctx. It may be confusing as it's now, in particular the change covers the following 2 cases: TASK1 | TASK2 _________________________________________________ ring = create() | | limit_iowq_workers() *not limited* | TASK1 | TASK2 _________________________________________________ ring = create() | | issue_requests() limit_iowq_workers() | | *not limited* A note on locking, it's safe to traverse ->tctx_list as we hold ->uring_lock, but do that after dropping sqd->lock to avoid possible problems. It's also safe to access tctx->io_wq there because tasks kill it only after removing themselves from tctx_list, see io_uring_cancel_generic() -> io_uring_clean_tctx() Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/d6e09ecc3545e4dc56e43c906ee3d71b7ae21bed.1634818641.git.asml.silence@gmail.com Reviewed-by: Hao Xu <haoxu@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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File | Mode | Size |
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partitions | ||
Kconfig | -rw-r--r-- | 6.6 KB |
Kconfig.iosched | -rw-r--r-- | 1.3 KB |
Makefile | -rw-r--r-- | 1.7 KB |
badblocks.c | -rw-r--r-- | 14.1 KB |
bdev.c | -rw-r--r-- | 26.9 KB |
bfq-cgroup.c | -rw-r--r-- | 38.5 KB |
bfq-iosched.c | -rw-r--r-- | 255.7 KB |
bfq-iosched.h | -rw-r--r-- | 37.4 KB |
bfq-wf2q.c | -rw-r--r-- | 52.7 KB |
bio-integrity.c | -rw-r--r-- | 12.3 KB |
bio.c | -rw-r--r-- | 47.3 KB |
blk-cgroup-rwstat.c | -rw-r--r-- | 3.4 KB |
blk-cgroup-rwstat.h | -rw-r--r-- | 3.9 KB |
blk-cgroup.c | -rw-r--r-- | 49.8 KB |
blk-core.c | -rw-r--r-- | 46.9 KB |
blk-crypto-fallback.c | -rw-r--r-- | 18.5 KB |
blk-crypto-internal.h | -rw-r--r-- | 5.4 KB |
blk-crypto.c | -rw-r--r-- | 11.9 KB |
blk-exec.c | -rw-r--r-- | 3.0 KB |
blk-flush.c | -rw-r--r-- | 15.3 KB |
blk-integrity.c | -rw-r--r-- | 11.9 KB |
blk-ioc.c | -rw-r--r-- | 10.1 KB |
blk-iocost.c | -rw-r--r-- | 96.4 KB |
blk-iolatency.c | -rw-r--r-- | 28.0 KB |
blk-ioprio.c | -rw-r--r-- | 6.4 KB |
blk-ioprio.h | -rw-r--r-- | 332 bytes |
blk-lib.c | -rw-r--r-- | 11.5 KB |
blk-map.c | -rw-r--r-- | 14.1 KB |
blk-merge.c | -rw-r--r-- | 30.2 KB |
blk-mq-cpumap.c | -rw-r--r-- | 2.2 KB |
blk-mq-debugfs-zoned.c | -rw-r--r-- | 435 bytes |
blk-mq-debugfs.c | -rw-r--r-- | 24.9 KB |
blk-mq-debugfs.h | -rw-r--r-- | 2.7 KB |
blk-mq-pci.c | -rw-r--r-- | 1.3 KB |
blk-mq-rdma.c | -rw-r--r-- | 1.3 KB |
blk-mq-sched.c | -rw-r--r-- | 18.1 KB |
blk-mq-sched.h | -rw-r--r-- | 2.5 KB |
blk-mq-sysfs.c | -rw-r--r-- | 7.0 KB |
blk-mq-tag.c | -rw-r--r-- | 17.7 KB |
blk-mq-tag.h | -rw-r--r-- | 2.6 KB |
blk-mq-virtio.c | -rw-r--r-- | 1.3 KB |
blk-mq.c | -rw-r--r-- | 100.0 KB |
blk-mq.h | -rw-r--r-- | 10.1 KB |
blk-pm.c | -rw-r--r-- | 6.8 KB |
blk-pm.h | -rw-r--r-- | 763 bytes |
blk-rq-qos.c | -rw-r--r-- | 7.0 KB |
blk-rq-qos.h | -rw-r--r-- | 5.3 KB |
blk-settings.c | -rw-r--r-- | 28.4 KB |
blk-stat.c | -rw-r--r-- | 4.8 KB |
blk-stat.h | -rw-r--r-- | 4.6 KB |
blk-sysfs.c | -rw-r--r-- | 24.5 KB |
blk-throttle.c | -rw-r--r-- | 68.5 KB |
blk-timeout.c | -rw-r--r-- | 4.1 KB |
blk-wbt.c | -rw-r--r-- | 19.9 KB |
blk-wbt.h | -rw-r--r-- | 2.8 KB |
blk-zoned.c | -rw-r--r-- | 17.0 KB |
blk.h | -rw-r--r-- | 11.8 KB |
bounce.c | -rw-r--r-- | 6.7 KB |
bsg-lib.c | -rw-r--r-- | 10.0 KB |
bsg.c | -rw-r--r-- | 6.0 KB |
disk-events.c | -rw-r--r-- | 12.9 KB |
elevator.c | -rw-r--r-- | 19.0 KB |
fops.c | -rw-r--r-- | 15.4 KB |
genhd.c | -rw-r--r-- | 34.6 KB |
holder.c | -rw-r--r-- | 4.2 KB |
ioctl.c | -rw-r--r-- | 15.8 KB |
ioprio.c | -rw-r--r-- | 5.1 KB |
keyslot-manager.c | -rw-r--r-- | 16.3 KB |
kyber-iosched.c | -rw-r--r-- | 27.8 KB |
mq-deadline.c | -rw-r--r-- | 30.1 KB |
opal_proto.h | -rw-r--r-- | 9.4 KB |
sed-opal.c | -rw-r--r-- | 62.5 KB |
t10-pi.c | -rw-r--r-- | 7.7 KB |
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