From: Jan Hudec <bulb@ucw.cz>
To: linux-fsdevel@vger.kernel.org, Alexander Viro <viro@math.psu.edu>
Subject: Re: inode rwlock instead of semaphore
Date: Mon, 3 Feb 2003 14:13:52 +0100 [thread overview]
Message-ID: <20030203131352.GA7993@vagabond> (raw)
In-Reply-To: <20030202100155.A18636@schatzie.adilger.int>
On Sun, Feb 02, 2003 at 10:01:55AM -0700, Andreas Dilger wrote:
> Al,
> One possibility is to change the VFS to use down_read(&dir->i_rwlock) or
> similar, or alternately create VFS methods that allow pushing the locking
> down into the filesystem so they could use a rwlock or even a dir+name-based
> lock (e.g. for ext3+htree) so they can lock subsets of the directory for
> both read and write operations.
Definitely sure lookup is a reader? AFAICT from the VFS point of view,
it's a writer and from the disk's point of view the filesystem driver
and not VFS should do the locking (eg. networking filesystems would only
do this locking on server).
-------------------------------------------------------------------------------
Jan 'Bulb' Hudec <bulb@ucw.cz>
next prev parent reply other threads:[~2003-02-03 13:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-02 17:01 inode rwlock instead of semaphore Andreas Dilger
2003-02-02 17:42 ` Matthew Wilcox
2003-02-02 22:32 ` Andrew Morton
2003-02-03 13:13 ` Jan Hudec [this message]
2003-02-03 17:47 ` Andreas Dilger
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=20030203131352.GA7993@vagabond \
--to=bulb@ucw.cz \
--cc=linux-fsdevel@vger.kernel.org \
--cc=viro@math.psu.edu \
/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.