linux-kernel - Re: [PATCH 0/7] minmax: reduce compilation time

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

Message-ID: <f26b8167-ee81-413e-b48a-0469680fb768@kernel.dk>
Date: Sat, 27 Jul 2024 09:30:10 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Linus Torvalds <torvalds@...uxfoundation.org>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: David Laight <David.Laight@...lab.com>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "Matthew Wilcox (Oracle)" <willy@...radead.org>,
 Christoph Hellwig <hch@...radead.org>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
 Dan Carpenter <dan.carpenter@...aro.org>, Arnd Bergmann <arnd@...nel.org>,
 "Jason@...c4.com" <Jason@...c4.com>,
 "pedro.falcato@...il.com" <pedro.falcato@...il.com>,
 Mateusz Guzik <mjguzik@...il.com>, "linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [PATCH 0/7] minmax: reduce compilation time

On 7/26/24 4:48 PM, Linus Torvalds wrote:
> I didn't even look at what the issue was with the
> bio_for_each_segment() expansion, in the hope that Jens will make that
> one look better.

I did take a quick look, pretty obviously bvec_iter_bvec() which makes
it horrible, which came from Kent's immutable work quite a while ago.
Not sure yet what to do about it, will spend some time on this next
week.

-- 
Jens Axboe