io-wq: add support for uncancellable work

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Not all work can be cancelled, some of it we may need to guarantee
that it runs to completion. Allow the caller to set IO_WQ_WORK_NO_CANCEL
on work that must not be cancelled. Note that the caller work function
must also check for IO_WQ_WORK_NO_CANCEL on work that is marked
IO_WQ_WORK_CANCEL.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Jens Axboe 2019-12-11 19:29:43 -07:00

parent 6e802a4ba0

commit 0c9d5ccd26

3 changed files with 12 additions and 2 deletions

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8

fs/io-wq.c

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1

fs/io-wq.h

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5

fs/io_uring.c

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