From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Fri, 29 Sep 2006 09:00:52 +0000 (-0700)
Subject: [PATCH] copy_process: cosmetic ->ioprio tweak
X-Git-Tag: v2.6.19-rc1~722
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5b160f5ecd2f1b6df2e0015dc1f319c8ef803d62;p=pandora-kernel.git

[PATCH] copy_process: cosmetic ->ioprio tweak

copy_process:
// holds tasklist_lock + ->siglock
       /*
        * inherit ioprio
        */
       p->ioprio = current->ioprio;

Why?  ->ioprio was already copied in dup_task_struct().  I guess this is
needed to ensure that the child can't escape
sys_ioprio_set(IOPRIO_WHO_{PGRP,USER}), yes?

In that case we don't need ->siglock held, and the comment should be
updated.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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