From: Al Viro <viro@ftp.linux.org.uk>
To: Theodore Tso <tytso@thunk.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC] [PATCH 6/8] inode-diet: Move i_cindex from struct inode to struct file
Date: Mon, 19 Jun 2006 20:37:56 +0100 [thread overview]
Message-ID: <20060619193756.GM27946@ftp.linux.org.uk> (raw)
In-Reply-To: <20060619193335.GL27946@ftp.linux.org.uk>
On Mon, Jun 19, 2006 at 08:33:35PM +0100, Al Viro wrote:
> On Mon, Jun 19, 2006 at 11:20:09AM -0400, Theodore Tso wrote:
> > inode.i_cindex isn't initialized until the character device is opened
> > anyway, and there are far more struct inodes in memory than there are
> > struct file. So move the cindex field to file.f_cindex, and change
> > the one(!) user of cindex to use file pointer, which is in fact simpler.
>
> NAK. Please, take it to the union into cdev part.
Explanation: the whole point of that sucker is to avoid i_rdev use
in drivers, switching to i_cdev + i_cindex. _Especially_ in open().
There is a bunch of other drivers that would get cleaner from that,
including a lot of tty code.
next prev parent reply other threads:[~2006-06-19 19:37 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-19 15:20 [RFC] [PATCH 0/8] Inode slimming Theodore Tso
2006-06-19 15:20 ` [RFC] [PATCH 1/8] inode_diet: Replace inode.u.generic_ip with inode.i_private Theodore Tso
2006-06-19 17:17 ` Jan Engelhardt
2006-06-19 19:09 ` Christoph Hellwig
2006-06-19 19:37 ` Theodore Tso
2006-06-20 9:43 ` Steven Whitehouse
2006-06-20 11:45 ` Arnd Bergmann
2006-06-20 12:34 ` Steven Whitehouse
2006-06-20 13:53 ` Arnd Bergmann
2006-06-20 15:01 ` Brian F. G. Bidulock
2006-06-20 15:04 ` Brian F. G. Bidulock
2006-06-20 12:29 ` Theodore Tso
2006-06-19 15:20 ` [RFC] [PATCH 2/8] inode-diet: Move i_pipe into a union Theodore Tso
2006-06-19 17:19 ` Jan Engelhardt
2006-06-19 19:06 ` Theodore Tso
2006-06-20 15:23 ` Brian F. G. Bidulock
2006-06-21 1:45 ` Theodore Tso
2006-06-22 9:03 ` Brian F. G. Bidulock
2006-06-19 15:20 ` [RFC] [PATCH 3/8] inode-diet: Move i_bdev " Theodore Tso
2006-06-19 15:20 ` [RFC] [PATCH 4/8] inode-diet: Move i_cdev " Theodore Tso
2006-06-19 17:20 ` Jan Engelhardt
2006-06-19 15:20 ` [RFC] [PATCH 5/8] inode-diet: Eliminate i_blksize and use a per-superblock default Theodore Tso
2006-06-19 15:49 ` Avi Kivity
2006-06-19 16:55 ` Theodore Tso
2006-06-19 15:58 ` Christoph Hellwig
2006-06-19 16:16 ` Joel Becker
2006-06-19 17:20 ` Theodore Tso
2006-06-19 18:55 ` Christoph Hellwig
2006-06-19 22:13 ` Mark Fasheh
2006-06-21 19:41 ` Nate Diller
2006-06-19 17:03 ` Theodore Tso
2006-06-19 18:56 ` Christoph Hellwig
2006-06-19 16:01 ` Joel Becker
2006-06-19 17:06 ` Theodore Tso
2006-06-19 21:45 ` Joel Becker
2006-06-19 22:14 ` Mark Fasheh
2006-06-19 15:20 ` [RFC] [PATCH 6/8] inode-diet: Move i_cindex from struct inode to struct file Theodore Tso
2006-06-19 19:33 ` Al Viro
2006-06-19 19:37 ` Al Viro [this message]
2006-06-19 20:58 ` Theodore Tso
2006-06-19 21:51 ` Stefan Richter
2006-06-19 15:20 ` [RFC] [PATCH 7/8] inode-diet: Use a union for i_blocks and i_size, i_rdev and i_devices Theodore Tso
2006-06-19 15:20 ` [RFC] [PATCH 8/8] inode-diet: Fix size of i_blkbits, i_version, and i_dnotify_mask Theodore Tso
2006-06-19 16:54 ` [RFC] [PATCH 0/8] Inode slimming Christoph Lameter
2006-06-19 19:09 ` Theodore Tso
-- strict thread matches above, loose matches on Subject: below --
2006-06-21 12:51 [RFC] [PATCH 0/8] Inode diet v2 Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 6/8] inode-diet: Move i_cindex from struct inode to struct file Theodore Tso
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060619193756.GM27946@ftp.linux.org.uk \
--to=viro@ftp.linux.org.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=tytso@thunk.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.