From: Matthew Wilcox <willy@debian.org>
To: Dave Hansen <haveblue@us.ibm.com>
Cc: Matthew Wilcox <willy@debian.org>, linux-kernel@vger.kernel.org
Subject: Re: fs/locks.c BKL removal
Date: Sun, 12 May 2002 03:07:42 +0100 [thread overview]
Message-ID: <20020512030742.P32414@parcelfarce.linux.theplanet.co.uk> (raw)
In-Reply-To: <3CDC4037.8040104@us.ibm.com> <20020511204551.M32414@parcelfarce.linux.theplanet.co.uk> <3CDDC7F0.6010407@us.ibm.com>
On Sat, May 11, 2002 at 06:40:00PM -0700, Dave Hansen wrote:
> Do you really think a single lock is the way to go? Maybe I'm just
> paranoid, but somebody is going to run into a locking bottleneck here
> eventually. I also just don't like global locks.
Well, we have a global entity being protected -- the file_lock_list.
Clearly we don't want to use one of the existing per-inode semaphores
since semaphores have a noted bad effect on both benchmarks and real-world
scenarios. And I don't think introducing a new per-inode lock would
really be welcome.
> I'll ask our benchmarking team if they have test suites for file
> locking. I crossing my fingers.
Cool, thanks.
--
Revolutions do not require corporate support.
prev parent reply other threads:[~2002-05-12 2:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-10 21:48 Dave Hansen
2002-05-10 22:13 ` Dave Hansen
2002-05-10 23:17 ` Andrew Morton
2002-05-11 19:48 ` Matthew Wilcox
2002-05-11 19:45 ` Matthew Wilcox
2002-05-12 1:40 ` Dave Hansen
2002-05-12 2:07 ` Matthew Wilcox [this message]
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=20020512030742.P32414@parcelfarce.linux.theplanet.co.uk \
--to=willy@debian.org \
--cc=haveblue@us.ibm.com \
--cc=linux-kernel@vger.kernel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®