linux-kernel - Re: [PATCH 0/4] Was: deferring _

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Message-ID: <20120628162253.GA25357@redhat.com>
Date:	Thu, 28 Jun 2012 18:22:53 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	". James Morris" <jmorris@...ei.org>,
	linux-security-module@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	David Howells <dhowells@...hat.com>
Subject: Re: [PATCH 0/4] Was: deferring __fput()

On 06/28, Al Viro wrote:
>
> The list removal logics in mine looks really ugly ;-/

Basically the code is almost the same as mine.

But task_work_add() can be simplified a bit, no need to check
last != NULL twice.

	last = task->task_works ?: twork;
	task->last_twork = twork;
	twork->next = last->next;	/* XXX */
	last->next = twork;

If ->task_works == NULL, then XXX is meaningless but safe.

Oleg.

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