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216c8f5ef0
Monitor work actually introduces one extra context for handling abort, this way is easy to cause race, and also introduce extra delay when handling aborting. Now we start to support cancelable uring_cmd, so use it instead: 1) this cancel callback is either run from the uring cmd submission task context or called after the io_uring context is exit, so the callback is run exclusively with ublk_ch_uring_cmd() and __ublk_rq_task_work(). 2) the previous patch freezes request queue when calling ublk_abort_queue(), which is now completely exclusive with ublk_queue_rq() and ublk_ch_uring_cmd()/__ublk_rq_task_work(). 3) in timeout handler, if all IOs are in-flight, then all uring commands are completed, uring command canceling can't help us to provide forward progress any more, so call ublk_abort_requests() in timeout handler. This way simplifies aborting queue, and is helpful for adding new feature, such as, relax the limit of using single task for handling one queue. Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20231009093324.957829-7-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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| aoe | ||
| drbd | ||
| mtip32xx | ||
| null_blk | ||
| rnbd | ||
| xen-blkback | ||
| zram | ||
| amiflop.c | ||
| ataflop.c | ||
| brd.c | ||
| floppy.c | ||
| Kconfig | ||
| loop.c | ||
| Makefile | ||
| n64cart.c | ||
| nbd.c | ||
| pktcdvd.c | ||
| ps3disk.c | ||
| ps3vram.c | ||
| rbd.c | ||
| rbd_types.h | ||
| sunvdc.c | ||
| swim.c | ||
| swim3.c | ||
| swim_asm.S | ||
| ublk_drv.c | ||
| virtio_blk.c | ||
| xen-blkfront.c | ||
| z2ram.c | ||