linux-kernel - Re: Linux 2.6.29

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Message-ID: <49D82993.8050208@rtr.ca>
Date:	Sat, 04 Apr 2009 23:46:27 -0400
From:	Mark Lord <lkml@....ca>
To:	David Newall <davidn@...idnewall.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Garzik <jeff@...zik.org>,
	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>,
	torvalds@...ux-foundation.org, tytso@....edu, drees76@...il.com,
	jesper@...gh.cc, linux-kernel@...r.kernel.org
Subject: Re: Linux 2.6.29

David Newall wrote:
> Andrew Morton wrote:
>> - open the file
>>
>> - unlink the file
>>
>> - now sit in a loop, slowly nibbling away at the tail with
>>   ftruncate() until the file is gone.
> 
> Why not fork and unlink in the child?
..

I think it does the equivalent of that today.

Problem is, if you do the unlink without the nibbling,
then the disk locks up the system cold for 2-3 minutes
until the disk delete actually completes.

-ml
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