From: Eric Dumazet <edumazet@google.com>
Date: Tue, 21 Aug 2012 13:05:14 +0000 (+0200)
Subject: task_work: add a scheduling point in task_work_run()
X-Git-Tag: v3.6-rc3~7^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88ec2789d856056344161aa20420dd37e893b0fe;p=pandora-kernel.git

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>
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