From: SF Markus Elfring <elfring@users.sourceforge.net>
To: Dave Chinner <david@fromorbit.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>,
kernel-janitors@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
xfs@oss.sgi.com
Subject: Re: XFS: Fine-tuning for checks before the function call "xfs_qm_dqrele"?
Date: Wed, 01 Jul 2015 09:50:00 +0200 [thread overview]
Message-ID: <55939BA8.1090400@users.sourceforge.net> (raw)
In-Reply-To: <20150629214355.GE7943@dastard>
> xfs_dqrele_inode() gets called on every inode in the inode cache,
> and this change results in a cacheline in every inode being dirtied
> even if they don't have dquots attached. Given the inode cache can
> hold tens to hundreds of millions of inodes on large machines, we
> don't want to dirty any cachelines we don't need to while walking
> the inode cache and releasing dquots...
Would it make sense to annotate checks before such function calls
as "LIKELY"?
Regards,
Markus
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next prev parent reply other threads:[~2015-07-01 7:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <5307CAA2.8060406@users.sourceforge.net>
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[not found] ` <5317A59D.4@users.sourceforge.net>
2014-11-29 16:45 ` [PATCH 1/1] XFS: Deletion of unnecessary checks before two function calls SF Markus Elfring
2014-11-30 23:09 ` Dave Chinner
2015-06-26 9:15 ` [PATCH] XFS: Delete unnecessary checks before the function call "xfs_qm_dqrele" SF Markus Elfring
2015-06-29 21:43 ` Dave Chinner
2015-07-01 7:50 ` SF Markus Elfring [this message]
2015-07-02 0:19 ` XFS: Fine-tuning for checks before the function call "xfs_qm_dqrele"? Dave Chinner
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