From: Andreas Gruenbacher <agruen@suse.de>
To: "Wang Sheng-Hui" <crosslonelyover@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Eric Sandeen <sandeen@redhat.com>,
linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk,
linux-mm@kvack.org, "linux-ext4" <linux-ext4@vger.kernel.org>,
"kernel-janitors" <kernel-janitors@vger.kernel.org>
Subject: Re: [PATCH] fix return value for mb_cache_shrink_fn when nr_to_scan > 0
Date: Mon, 19 Jul 2010 20:39:06 +0200 [thread overview]
Message-ID: <201007192039.06670.agruen@suse.de> (raw)
In-Reply-To: <4C42A10B.2080904@gmail.com>
On Sunday 18 July 2010 08:36:59 Wang Sheng-Hui wrote:
> I regenerated the patch. Please check it.
The logic for calculating how many objects to free is still wrong:
mb_cache_shrink_fn returns the number of entries scaled by
sysctl_vfs_cache_pressure / 100. It should also scale nr_to_scan by the
inverse of that. The sysctl_vfs_cache_pressure == 0 case (never scale) may
require special attention.
See dcache_shrinker() in fs/dcache.c.
Thanks,
Andreas
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next prev parent reply other threads:[~2010-07-19 18:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-18 1:01 [PATCH] fix return value for mb_cache_shrink_fn when nr_to_scan > 0 Wang Sheng-Hui
2010-07-18 4:06 ` Eric Sandeen
2010-07-18 6:01 ` Christoph Hellwig
2010-07-18 6:36 ` Wang Sheng-Hui
2010-07-19 18:39 ` Andreas Gruenbacher [this message]
2010-07-20 1:02 ` shenghui
2010-07-20 1:04 ` shenghui
2010-07-20 15:13 ` Eric Sandeen
2010-07-20 16:34 ` Andreas Gruenbacher
2010-07-19 18:40 ` Andreas Gruenbacher
-- strict thread matches above, loose matches on Subject: below --
2010-07-21 10:53 Wang Sheng-Hui
2010-07-21 14:00 ` Eric Sandeen
2010-07-22 0:54 Wang Sheng-Hui
2010-07-22 1:06 ` shenghui
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