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: <Zm_ezp1TaIoAK1-P@infradead.org>
Date: Sun, 16 Jun 2024 23:59:26 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Zhang Yi <yi.zhang@...weicloud.com>
Cc: Christoph Hellwig <hch@...radead.org>, linux-xfs@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	djwong@...nel.org, brauner@...nel.org, david@...morbit.com,
	chandanbabu@...nel.org, jack@...e.cz, yi.zhang@...wei.com,
	chengzhihao1@...wei.com, yukuai3@...wei.com,
	John Garry <john.g.garry@...cle.com>
Subject: Re: [PATCH -next v5 7/8] xfs: speed up truncating down a big
 realtime inode

On Sat, Jun 15, 2024 at 07:44:21PM +0800, Zhang Yi wrote:
> The reason why atomic feature can't split and convert the tail extent on truncate
> down now is the dio write iter loop will split an atomic dio which covers the
> whole allocation unit(extsize) since there are two extents in on allocation unit.

We could fix this by merging the two in iomap_begin, as the end_io
handler already deals with multiple ranges.  But let's think of that
when the need actually arises.


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ