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authorPavel Begunkov <asml.silence@gmail.com>2022-12-07 06:53:36 +0300
committerJens Axboe <axboe@kernel.dk>2022-12-07 18:50:57 +0300
commit6d043ee1164ca3305738131f170e560587070fa9 (patch)
tree67f4858e877e67894abad983f81c6c7e8a736e79 /include/linux/stackprotector.h
parent172113101641cf1f9628c528ec790cb809f2b704 (diff)
downloadlinux-6d043ee1164ca3305738131f170e560587070fa9.tar.xz
io_uring: do msg_ring in target task via tw
While executing in a context of one io_uring instance msg_ring manipulates another ring. We're trying to keep CQEs posting contained in the context of the ring-owner task, use task_work to send the request to the target ring's task when we're modifying its CQ or trying to install a file. Note, we can't safely use io_uring task_work infra and have to use task_work directly. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/4d76c7b28ed5d71b520de4482fbb7f660f21cd80.1670384893.git.asml.silence@gmail.com [axboe: use TWA_SIGNAL_NO_IPI] Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/stackprotector.h')
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