All of lore.kernel.org
 help / color / mirror / Atom feed
From: Trond Myklebust <trondmy@primarydata.com>
To: "bcodding@redhat.com" <bcodding@redhat.com>
Cc: "linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH 2/3] NFS: Be more targeted about readdirplus use when doing lookup/revalidation
Date: Thu, 1 Dec 2016 20:47:40 +0000	[thread overview]
Message-ID: <1480625258.10526.1.camel@primarydata.com> (raw)
In-Reply-To: <28E39796-E929-4D65-A6F6-D0AF803AB390@redhat.com>
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  reply	other threads:[~2016-12-01 20:47 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-19 16:54 [PATCH 0/3] Address readdirplus performance Trond Myklebust
2016-11-19 16:54 ` [PATCH 1/3] NFS: Fix a performance regression in readdir Trond Myklebust
2016-11-19 16:54   ` [PATCH 2/3] NFS: Be more targeted about readdirplus use when doing lookup/revalidation Trond Myklebust
2016-11-19 16:54     ` [PATCH 3/3] NFS: Replace nfs_force_use_readdirplus() with nfs_advise_use_readdirplus() Trond Myklebust
2016-11-30 19:09     ` [PATCH 2/3] NFS: Be more targeted about readdirplus use when doing lookup/revalidation Benjamin Coddington
2016-12-01 20:47       ` Trond Myklebust [this message]
2016-12-02 13:56         ` Benjamin Coddington
2016-12-02 14:32           ` Trond Myklebust
2016-11-30 19:08   ` [PATCH 1/3] NFS: Fix a performance regression in readdir Benjamin Coddington

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=1480625258.10526.1.camel@primarydata.com \
    --to=trondmy@primarydata.com \
    --cc=bcodding@redhat.com \
    --cc=linux-nfs@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 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.