linux-kernel - Re: [patch 4/8] fs, exportfs: Add export_encode_inode

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Message-ID: <50338458.7090602@panasas.com>
Date:	Tue, 21 Aug 2012 15:51:36 +0300
From:	Boaz Harrosh <bharrosh@...asas.com>
To:	"J. Bruce Fields" <bfields@...ldses.org>
CC:	Pavel Emelyanov <xemul@...allels.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	James Bottomley <jbottomley@...allels.com>,
	Matthew Helsley <matt.helsley@...il.com>
Subject: Re: [patch 4/8] fs, exportfs: Add export_encode_inode_fh helper

On 08/21/2012 03:29 PM, J. Bruce Fields wrote:
<>

> OK.  So if you don't mind the fact that there are filesystems with
> inotify support but not filehandle support, then I think generating a
> filehandle early as you describe would work.  I guess it's a little more
> memory per watched inode.
> 


For the minority of FSs that do not have a filehandle support it should
be easy to generate a generic one, that should work 95% of the time.

Are we guaranteed that after the checkpoint restore the version of
the Kernel is the same as the one that did the checkpoint? If yes
then I don't see any problem.

> --b.


Cheers
Boaz

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