linux-ext4 - Re: [PATCH e2fsprogs] Add flag to ext2fs_flush and ext2fs

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Message-ID: <20110924165350.GC2779@thunk.org>
Date:	Sat, 24 Sep 2011 12:53:50 -0400
From:	Ted Ts'o <tytso@....edu>
To:	"Richard W.M. Jones" <rjones@...hat.com>
Cc:	linux-ext4@...r.kernel.org, berrange@...hat.com
Subject: Re: [PATCH e2fsprogs] Add flag to ext2fs_flush and ext2fs_close to
 avoid fsync.

On Fri, Sep 23, 2011 at 11:23:42AM +0100, Richard W.M. Jones wrote:
> [Hopefully sent to the right place this time ...]
> 
> This patch allows users of the ext2fs library to avoid doing an fsync
> on close (obviously this is optional, and doesn't affect existing callers).
> 
> Where this helps us is when constructing a throwaway ext2 filesystem
> just to boot a virtual machine.  By avoiding the 2 x fsync, we save
> over 5 seconds and many many unnecessary disk writes.

Added to the e2fsprogs next branch, thanks.  It will be part of the
e2fsprogs 1.42 release.

						- Ted
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