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From: Al Viro <viro@ZenIV.linux.org.uk>
To: David Howells <dhowells@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org,
	linux-cachefs@redhat.com
Subject: Re: [PATCH] CacheFiles: Provide read-and-reset release counters for cachefilesd
Date: Mon, 1 Feb 2016 17:35:01 +0000	[thread overview]
Message-ID: <20160201173501.GL17997@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20160201164304.9867.40456.stgit@warthog.procyon.org.uk>

On Mon, Feb 01, 2016 at 04:43:04PM +0000, David Howells wrote:
> Provide read-and-reset objects- and blocks-released counters for cachefilesd
> to use to work out whether there's anything new that can be culled.
> 
> One of the problems cachefilesd has is that if all the objects in the cache
> are pinned by inodes lying dormant in the kernel inode cache, there isn't
> anything for it to cull.  In such a case, it just spins around walking the
> filesystem tree and scanning for something to cull.  This eats up a lot of
> CPU time.

Applied.

  reply	other threads:[~2016-02-01 17:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-01 16:43 [PATCH] CacheFiles: Provide read-and-reset release counters for cachefilesd David Howells
2016-02-01 17:35 ` Al Viro [this message]
  -- strict thread matches above, loose matches on Subject: below --
2016-01-25 16:48 David Howells
2016-01-25 16:41 David Howells

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