linux-ext4 - Re: [RFC] Parallelize IO for e2fsck

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Message-id: <20080125110942.GX18433@webber.adilger.int>
Date:	Fri, 25 Jan 2008 04:09:42 -0700
From:	Andreas Dilger <adilger@....com>
To:	Zan Lynx <zlynx@....org>
Cc:	Theodore Tso <tytso@....EDU>, Adrian Bunk <bunk@...nel.org>,
	Bodo Eggert <7eggert@....de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>, Valdis.Kletnieks@...edu,
	David Chinner <dgc@....com>,
	Valerie Henson <val@...consulting.com>,
	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org, Ric Wheeler <ric@....com>
Subject: Re: [RFC] Parallelize IO for e2fsck

On Jan 24, 2008  17:25 -0700, Zan Lynx wrote:
> Have y'all been following the /dev/mem_notify patches?
> http://article.gmane.org/gmane.linux.kernel/628653

Having the notification be via poll() is a very restrictive processing
model.  Having the notification be via a signal means that any kind of
process (and not just those that are event loop driven) can register
a callback at some arbitrary point in the code and be notified.  I
don't object to the poll() interface, but it would be good to have a
signal mechanism also.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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