linux-kernel - Re: Linux 2.6.29

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Message-ID: <49D5CA3E.6020400@garzik.org>
Date:	Fri, 03 Apr 2009 04:35:10 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Rees <drees76@...il.com>
Subject: Re: Linux 2.6.29

Jeff Garzik wrote:
> Attached are some additional tests using sync_file_range, dd, an SSD and 
> a normal SATA disk.  The test program -- overwrite.c -- is unchanged 
> from my last posting, basically the same as Linus's except with 
> posix_fadvise()

Oh, and, as run-test.sh shows, these tests were done with the file 
pre-allocated and sync'd to disk.

The dd and overwrite invocations that follow the first dd invocation do 
/not/ require the fs to allocate new blocks.

	Jeff



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