Re: [PATCH 0/3 v3] dcache: make it more scalable on large system
From: Dave Chinner
Date: Wed Jun 05 2013 - 23:49:04 EST
On Wed, May 29, 2013 at 10:37:00PM +0200, Andi Kleen wrote:
> > As Dave said before, is the last path component sufficient? Or how
> > about an inode number?
> Neither works, the profiler needs to find the file and read it.
> inode searching would be incredible expensive, unless the file system
> provided a "open-by-inode" primitive
That's effectively what fs/fhandle.c gives you.
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