Peter Zijlstra 40c7fd3fdf block: Fix sys_ioprio_set(.which=IOPRIO_WHO_PGRP) task iteration ...

do_each_pid_thread() { } while_each_pid_thread() is a double loop and
thus break doesn't work as expected. Also, it should be used under
tasklist_lock because otherwise we can race against change_pid() for
PGID/SID.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/YG7Q5C4Rb5dx5GFx@hirez.programming.kicks-ass.net
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2021-04-08 13:43:53 -06:00

5.2 KiB

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