tree 5747e9fde43bf6665d6a82d1f29640a4b966d676
parent b2e720ace221f9be75fefdba7d0ebab9d05fc561
author Jens Axboe <axboe@kernel.dk> 1617328409 -0600
committer Jens Axboe <axboe@kernel.dk> 1618191025 -0600

task_work: add helper for more targeted task_work canceling

The only exported helper we have right now is task_work_cancel(), which
cancels any task_work from a given task where func matches the queued
work item. This is a bit too coarse for some use cases. Add a
task_work_cancel_match() that allows to more specifically target
individual work items outside of purely the callback function used.

task_work_cancel() can be trivially implemented on top of that, hence do
so.

Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>