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  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:	Thu, 21 Apr 2011 14:02:13 -0400
From:	Christoph Hellwig <>
To:	Andreas Dilger <>
Cc:	Christoph Hellwig <>,
	Chris Mason <>,
	linux-fsdevel <>,
	linux-ext4 <>, xfs <>,
	jack <>, axboe <>,
	dchinner <>
Subject: Re: buffered writeback torture program

On Thu, Apr 21, 2011 at 11:59:37AM -0600, Andreas Dilger wrote:
> But doesn't XFS have potentially very large extents, especially in the case of files that were fallocate()'d or linearly written?  If there is a single 8GB extent, and then random writes within that extent (seems very database like) grouping the all of the writes in the extent doesn't seem so great.

It doesn't cluster any writes in an extent.  It only writes out
additional dirty pages directly following that one we were asked to
write out.  As soon as we hit a non-dirty page we give up.

To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists