linux-ext4 - Re: [PATCH 2/3] mm: Provide address_space operation for filling pages for read

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]

Date:   Wed, 20 Jan 2021 17:28:36 +0000
From:   Christoph Hellwig <hch@...radead.org>
To:     Jan Kara <jack@...e.cz>
Cc:     Christoph Hellwig <hch@...radead.org>,
        linux-fsdevel@...r.kernel.org,
        Matthew Wilcox <willy@...radead.org>,
        linux-ext4@...r.kernel.org
Subject: Re: [PATCH 2/3] mm: Provide address_space operation for filling
 pages for read

On Wed, Jan 20, 2021 at 06:27:05PM +0100, Jan Kara wrote:
> This would mean pulling i_mmap_sem out from ext4/XFS/F2FS private inode
> into the VFS inode. Which is fine by me but it would grow struct inode for
> proc / tmpfs / btrfs (although for btrfs I'm not convinced it isn't
> actually prone to the race and doesn't need similar protection as xfs /
> ext4) so some people may object.

The btrfs folks are already looking into lifting it to common code.

Also I have a patch pending to remove a list_head from the inode to
counter the size increase :)