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  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:   Fri, 10 May 2019 10:02:49 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Kanchan Joshi <joshi.k@...sung.com>
Cc:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org, prakash.v@...sung.com,
        anshul@...sung.com
Subject: Re: [PATCH v5 0/7] Extend write-hint framework, and add write-hint
 for Ext4 journal

I think this fundamentally goes in the wrong direction.  We explicitly
designed the block layer infrastructure around life time hints and
not the not fish not flesh streams interface, which causes all kinds
of problems.

Including the one this model causes on at least some SSDs where you
now statically allocate resources to a stream that is now not globally
available.  All for the little log with very short date lifetime that
any half decent hot/cold partitioning algorithm in the SSD should be
able to detect.

Powered by blists - more mailing lists