Commit 88ec2789 authored Aug 21, 2012 by Eric Dumazet Committed by Al Viro Aug 22, 2012

task_work: add a scheduling point in task_work_run()



It seems commit 4a9d4b02 (switch fput to task_work_add) reintroduced
the problem addressed in commit 944be0b2 (close_files(): add scheduling
point)

If a server process with a lot of files (say 2 million tcp sockets)
is killed, we can spend a lot of time in task_work_run() and trigger
a soft lockup.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent 55852635

kernel/task_work.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -75,6 +75,7 @@ void task_work_run(void)
		p = q->next;
		q->func(q);
		q = p;
		cond_resched();
		}
		}
		}