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Message-ID: <4C03E46B.9040407@ics.forth.gr>
Date: Mon, 31 May 2010 19:31:39 +0300
From: Yannis Klonatos <klonatos@ics.forth.gr>
MIME-Version: 1.0
Subject: xfs_buf and buffercache/pagecache connection
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To: xfs@oss.sgi.com

Hello,

         I was looking to add a kernel hook to my system in order to 
monitor buffer-cache hit and misses. Initially I was
planning to add my modifications to the __getblk(). However, i noticed 
that XFS does not directly use the buffer-cache
for its pages but it seems to implement its own buffer.
         What I am now looking for is 1) the place where XFS checks 
whether a page exists in its buffer or not and 2)
what are the possible interactions between xfs_buf and the Linux kernel 
buffer-cache.
         I would appreciate any information regarding the above issues.

Thanks in advance,
Yannis Klonatos





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