From: "J. Bruce Fields" <bfields@fieldses.org>
To: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Al Viro <viro@zeniv.linux.org.uk>,
Alexey Dobriyan <adobriyan@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Pavel Emelyanov <xemul@parallels.com>,
James Bottomley <jbottomley@parallels.com>,
Matthew Helsley <matt.helsley@gmail.com>,
aneesh.kumar@linux.vnet.ibm.com
Subject: Re: [patch 0/9] extended fdinfo via procfs series, v7
Date: Thu, 23 Aug 2012 08:23:18 -0400 [thread overview]
Message-ID: <20120823122318.GD29943@fieldses.org> (raw)
In-Reply-To: <20120823104323.040550004@openvz.org>
On Thu, Aug 23, 2012 at 02:43:23PM +0400, Cyrill Gorcunov wrote:
> Hi guys,
>
> here is updated version of the fdinfo via procfs series,
> the changes from previous one are the following
>
> - fhandle is carried inside inotify mark but this feature
> is CONFIG dependent to not bloat the kernel for users
> who don't need it
As Al points out, this doesn't help much: if this feature is something a
distro will want to provide, then in practice all their users are
eventually going to end up with it turned on.
Could you quantify the cost somehow?
I wonder if you could get away with something less than MAX_HANDLE_SIZE?
128 bytes is the maximum allowable by NFSv4. In practice I don't think
any of our filesystems need more than 40 or so right now.
--b.
>
> - a small fix in exportfs code to prevent nil dereference
>
> the comments would be appreciated.
next prev parent reply other threads:[~2012-08-23 12:23 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-23 10:43 [patch 0/9] extended fdinfo via procfs series, v7 Cyrill Gorcunov
2012-08-23 10:43 ` [patch 1/9] procfs: Move /proc/pid/fd[info] handling code to fd.[ch] Cyrill Gorcunov
2012-08-25 17:16 ` Al Viro
2012-08-25 17:39 ` Cyrill Gorcunov
2012-08-25 17:55 ` Al Viro
2012-08-25 18:58 ` Cyrill Gorcunov
2012-08-25 19:12 ` Al Viro
2012-08-25 19:43 ` Cyrill Gorcunov
2012-08-25 21:52 ` Al Viro
2012-08-25 23:19 ` Al Viro
2012-08-23 10:43 ` [patch 2/9] procfs: Convert /proc/pid/fdinfo/ handling routines to seq-file v2 Cyrill Gorcunov
2012-08-26 2:46 ` Al Viro
2012-08-26 8:13 ` Cyrill Gorcunov
2012-08-26 14:28 ` Cyrill Gorcunov
2012-08-26 15:05 ` Al Viro
2012-08-26 15:10 ` Cyrill Gorcunov
2012-08-23 10:43 ` [patch 3/9] procfs: Add ability to plug in auxiliary fdinfo providers Cyrill Gorcunov
2012-08-23 10:43 ` [patch 4/9] fs, exportfs: Fix nil dereference if no s_export_op present Cyrill Gorcunov
2012-08-23 12:12 ` J. Bruce Fields
2012-08-23 12:34 ` Cyrill Gorcunov
2012-08-23 15:22 ` J. Bruce Fields
2012-08-23 10:43 ` [patch 5/9] fs, notify: Add file handle entry into inotify_inode_mark Cyrill Gorcunov
2012-08-23 10:43 ` [patch 6/9] fs, notify: Add procfs fdinfo helper v4 Cyrill Gorcunov
2012-08-23 10:43 ` [patch 7/9] fs, eventfd: Add procfs fdinfo helper Cyrill Gorcunov
2012-08-23 10:43 ` [patch 8/9] fs, epoll: Add procfs fdinfo helper v2 Cyrill Gorcunov
2012-08-23 10:43 ` [patch 9/9] fdinfo: Show sigmask for signalfd fd v2 Cyrill Gorcunov
2012-08-23 12:23 ` J. Bruce Fields [this message]
2012-08-23 12:44 ` [patch 0/9] extended fdinfo via procfs series, v7 Cyrill Gorcunov
2012-08-23 13:52 ` J. Bruce Fields
2012-08-23 13:56 ` Cyrill Gorcunov
2012-08-23 15:25 ` J. Bruce Fields
2012-08-23 17:02 ` Cyrill Gorcunov
2012-08-23 17:59 ` J. Bruce Fields
2012-08-23 18:03 ` Cyrill Gorcunov
2012-08-23 17:28 ` Cyrill Gorcunov
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