linux-kernel - Re: Re: [PATCH] cgroup(fix critical bug): new handling for tasks file

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Message-ID: <6599ad830809080842p222b83bfr419120979add3df3@mail.gmail.com>
Date:	Mon, 8 Sep 2008 08:42:43 -0700
From:	"Paul Menage" <menage@...gle.com>
To:	"Lai Jiangshan" <laijs@...fujitsu.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Linux Containers" <containers@...ts.linux-foundation.org>
Subject: Re: Re: [PATCH] cgroup(fix critical bug): new handling for tasks file

On Mon, Sep 8, 2008 at 1:19 AM, Lai Jiangshan <laijs@...fujitsu.com> wrote:
>
>> +             while (index < end) {
>> +                     int mid = (index + end) / 2;
>> +                     if (cgrp->tasks_pids[mid] == pid) {
>> +                             index = mid;
>> +                             break;
>> +                     } else if (cgrp->tasks_pids[mid] <= pid)
>
> (cgrp->tasks_pids[mid] <= pid) ===> (cgrp->tasks_pids[mid] < pid)

Given the "if" test directly above, those two are equivalent.

Paul
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