linux-ext4 - Re: [PATCH 19/31] ext4: Convert ext4_journalled_zero_new

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: <20230314224619.GF860405@mit.edu>
Date:   Tue, 14 Mar 2023 18:46:19 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 19/31] ext4: Convert ext4_journalled_zero_new_buffers()
 to use a folio

On Thu, Jan 26, 2023 at 08:24:03PM +0000, Matthew Wilcox (Oracle) wrote:
> Remove a call to compound_head().

Same question as with other commits, plus one more; why is it notable
that calls to compound_head() are being reduced.  I've looked at the
implementation, and it doesn't look all _that_ heavyweight....