linux-kernel - Re: [RFC] ext3: per-process soft-syncing data=ordered mode

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Message-Id: <200801260827.50930.a1426z@gawab.com>
Date:	Sat, 26 Jan 2008 08:27:50 +0300
From:	Al Boldi <a1426z@...ab.com>
To:	Valdis.Kletnieks@...edu
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC] ext3: per-process soft-syncing data=ordered mode

Valdis.Kletnieks@...edu wrote:
> On Thu, 24 Jan 2008 23:36:00 +0300, Al Boldi said:
> > This RFC proposes to introduce a tunable which allows to disable fsync
> > and changes ordered into writeback writeout on a per-process basis like
> > this:
:
:
> But if you want to give them enough rope to shoot themselves in the foot
> with, I'd suggest abusing LD_PRELOAD to replace the fsync() glibc code
> instead.  No need to clutter the kernel with rope that can be (and has
> been) done in userspace.

Ok that's possible, but as you cannot use LD_PRELOAD to deal with changing 
ordered into writeback mode, we might as well allow them to disable fsync 
here, because it is in the same use-case.


Thanks!

--
Al

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