linux-kernel - Re: [PATCH v2 3/3] sgi-gru: Use __get_user_pages_fast in atomic_pte

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20190724160929.GA14052@infradead.org>
Date:   Wed, 24 Jul 2019 09:09:29 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Bharath Vedartham <linux.bhar@...il.com>
Cc:     sivanich@....com, arnd@...db.de, jhubbard@...dia.com,
        ira.weiny@...el.com, jglisse@...hat.com,
        gregkh@...uxfoundation.org, william.kucharski@...cle.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v2 3/3] sgi-gru: Use __get_user_pages_fast in
 atomic_pte_lookup

I think the atomic_pte_lookup / non_atomic_pte_lookup helpers
should simply go away.  Most of the setup code is common now and should
be in the caller where it can be shared.  Then just do a:

	if (atomic) {
		__get_user_pages_fast()
	} else {
		get_user_pages_fast();
	}

and we actually have an easy to understand piece of code.