linux-kernel - Re: [PATCH 0/4] mm: Use slab_list list

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-prev] [day] [month] [year] [list]

Message-ID: <20190312172157.GC32504@tower.DHCP.thefacebook.com>
Date:   Tue, 12 Mar 2019 17:22:02 +0000
From:   Roman Gushchin <guro@...com>
To:     Matthew Wilcox <willy@...radead.org>
CC:     "Tobin C. Harding" <me@...in.cc>,
        "Tobin C. Harding" <tobin@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/4] mm: Use slab_list list_head instead of lru

On Mon, Mar 11, 2019 at 07:38:28PM -0700, Matthew Wilcox wrote:
> On Tue, Mar 12, 2019 at 12:05:54PM +1100, Tobin C. Harding wrote:
> > > slab_list and lru are in the same bits.  Once this patch set is in,
> > > we can remove the enigmatic 'uses lru' comment that I added.
> > 
> > Funny you should say this, I came to me today while daydreaming that I
> > should have removed that comment :)
> > 
> > I'll remove it in v2.
> 
> That's great.  BTW, something else you could do to verify this patch
> set is check that the object file is unchanged before/after the patch.
> I tend to use 'objdump -dr' to before.s and after.s and use 'diff'
> to compare the two.

Btw, is it guaranteed that the object file will not change?
I was about to recommend the same, but was not sure, if such change
can cause gcc to generate a *slightly* different obj code.

Thanks!