From: "J. Bruce Fields" <bfields@fieldses.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org,
adilger@sun.com, corbet@lwn.net, Neil Brown <neilb@suse.de>
Subject: Re: [PATCH -V2] Generic name to handle and open by handle syscalls
Date: Thu, 18 Mar 2010 13:54:25 -0400 [thread overview]
Message-ID: <20100318175425.GA20294@fieldses.org> (raw)
In-Reply-To: <20100318173145.GA23304@infradead.org>
On Thu, Mar 18, 2010 at 01:31:45PM -0400, Christoph Hellwig wrote:
> I haven't looked at the code in detail yet, but the real value add for
> userspace nfs servers and similar would be globally unique handles.
> This of course requires filesystem support, but having a way to export
> the filesystem handle would also simplify nfsd a lot so that it doesn't
> have to rely on hacked support to pass this in from userspace which
> gets it from statfs, assuming f_fsid has parts of a uuid in it, or
> blkid.
>
> This might be as simple as adding an s_uuid array to the superblock and
> having some simple routines to iterate it, or we might make that
> an export operation to allow a bit more flexibility.
That might be a good thing. But the need for backwards-compatibility
with the existing mechanisms may prevent any simplification, at least in
the near term.
--b.
next prev parent reply other threads:[~2010-03-18 17:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-18 17:09 [PATCH -V2] Generic name to handle and open by handle syscalls Aneesh Kumar K.V
2010-03-18 17:09 ` [PATCH -V2 1/3] vfs: Add name to file handle conversion support Aneesh Kumar K.V
2010-03-18 17:09 ` [PATCH -V2 2/3] vfs: Add open by file handle support Aneesh Kumar K.V
2010-03-18 17:09 ` [PATCH -V2 3/3] x86: Add new syscalls for x86_32 Aneesh Kumar K.V
2010-03-18 17:31 ` [PATCH -V2] Generic name to handle and open by handle syscalls Christoph Hellwig
2010-03-18 17:54 ` J. Bruce Fields [this message]
2010-03-29 7:12 ` Aneesh Kumar K. V
2010-03-30 19:36 ` Andreas Dilger
2010-03-18 22:26 ` Andreas Dilger
2010-03-19 6:00 ` Aneesh Kumar K. V
2010-03-26 0:42 ` Ben Hutchings
2010-03-26 6:43 ` Andreas Dilger
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