All of lore.kernel.org
 help / color / mirror / Atom feed
From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@infradead.org>, xfs@oss.sgi.com
Subject: Re: [PATCH] xfs: Improve scalability of busy extent tracking
Date: Thu, 22 Apr 2010 13:08:49 -0400	[thread overview]
Message-ID: <20100422170848.GA26101@infradead.org> (raw)
In-Reply-To: <20100422161626.GE23541@dastard>

Been looking at this a bit and I have a theory:

 - a tid is not actually unique to a xfs_trans structure, if
   we call xfs_trans_dup a single xlog_ticket, and with that the
   tid is re-used by multiple transaction structure.
 - because of that the major semantic change in the version vs
   the previous one is that we now do not force the synchronous
   transaction for the case where we re-used a block in
   the rolled over transaction.

Still not quite sure about the implications of this.

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

  reply	other threads:[~2010-04-22 17:06 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-21  5:47 [PATCH] xfs: Improve scalability of busy extent tracking Dave Chinner
2010-04-22 11:01 ` Christoph Hellwig
2010-04-22 16:16   ` Dave Chinner
2010-04-22 17:08     ` Christoph Hellwig [this message]
2010-04-23  3:24       ` Dave Chinner
2010-04-22 11:07 ` Christoph Hellwig
2010-04-22 17:10   ` Christoph Hellwig
2010-04-23  3:25     ` Dave Chinner

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=20100422170848.GA26101@infradead.org \
    --to=hch@infradead.org \
    --cc=david@fromorbit.com \
    --cc=xfs@oss.sgi.com \
    /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.