LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Tejun Heo <tj@kernel.org>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Jens Axboe <jaxboe@fusionio.com>,
	Mike Snitzer <snitzer@redhat.com>,
	"tytso@mit.edu" <tytso@mit.edu>,
	"djwong@us.ibm.com" <djwong@us.ibm.com>,
	"shli@kernel.org" <shli@kernel.org>,
	"neilb@suse.de" <neilb@suse.de>,
	"adilger.kernel@dilger.ca" <adilger.kernel@dilger.ca>,
	"jack@suse.cz" <jack@suse.cz>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"kmannth@us.ibm.com" <kmannth@us.ibm.com>,
	"cmm@us.ibm.com" <cmm@us.ibm.com>,
	"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>,
	"rwheeler@redhat.com" <rwheeler@redhat.com>,
	"hch@lst.de" <hch@lst.de>, "josef@redhat.com" <josef@redhat.com>,
	"jmoyer@redhat.com" <jmoyer@redhat.com>
Subject: Re: [PATCH v3 1/2] block: skip elevator data initialization for flush requests
Date: Fri, 4 Feb 2011 16:08:46 +0100	[thread overview]
Message-ID: <20110204150826.GJ12133@htj.dyndns.org> (raw)
In-Reply-To: <20110204150456.GD32190@redhat.com>

Hello,

On Fri, Feb 04, 2011 at 10:04:57AM -0500, Vivek Goyal wrote:
> > The rationale behind suggesting was that it indicates to the allocator
> > that the request may be sorted as how the request will be used is
> > communicated using @rw_flags to the allocator.  The patch is buggy
> > that the flag actually ends up on the request.  Any better idea how to
> > communicate it?
> 
> Though you did not like the V1 of patch, personally I also liked just parsing
> FLUSH or FUA flag in get_request().
> 
> Or how about intoducing a helper function blk_rq_should_init_elevator() 
> or something like that and this function will parse FLUSH, FUA flags.

I suppose it's Jens' call, but if the FLUSH/FUA testing goes inside
the alloc function, please decorate with big fat comment and mention
it in the comment for the union definition too.

Thank you.

-- 
tejun

  reply	other threads:[~2011-02-04 15:08 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-21 15:59 [PATCHSET] block: reimplement FLUSH/FUA to support merge Tejun Heo
2011-01-21 15:59 ` [PATCH 1/3] block: add REQ_FLUSH_SEQ Tejun Heo
2011-01-21 15:59 ` [PATCH 2/3] block: improve flush bio completion Tejun Heo
2011-01-21 15:59 ` [PATCH 3/3] block: reimplement FLUSH/FUA to support merge Tejun Heo
2011-01-21 18:56   ` Vivek Goyal
2011-01-21 19:19     ` Vivek Goyal
2011-01-23 10:25     ` Tejun Heo
2011-01-23 10:29       ` Tejun Heo
2011-01-24 20:31       ` Darrick J. Wong
2011-01-25 10:21         ` Tejun Heo
2011-01-25 11:39           ` Jens Axboe
2011-03-23 23:37             ` Darrick J. Wong
2011-01-25 22:56           ` Darrick J. Wong
2011-01-22  0:49   ` Mike Snitzer
2011-01-23 10:31     ` Tejun Heo
2011-01-25 20:46       ` Vivek Goyal
2011-01-25 21:04         ` Mike Snitzer
2011-01-23 10:48   ` [PATCH UPDATED " Tejun Heo
2011-01-25 20:41   ` [KNOWN BUGGY RFC PATCH 4/3] block: skip elevator initialization for flush requests Mike Snitzer
2011-01-25 21:55     ` Mike Snitzer
2011-01-26  5:27       ` [RFC PATCH 4/3] block: skip elevator initialization for flush requests -- was never BUGGY relative to upstream Mike Snitzer
2011-01-26 10:03     ` [KNOWN BUGGY RFC PATCH 4/3] block: skip elevator initialization for flush requests Tejun Heo
2011-01-26 10:05       ` Tejun Heo
2011-02-01 17:38       ` [RFC " Mike Snitzer
2011-02-01 18:52         ` Tejun Heo
2011-02-01 22:46           ` [PATCH v2 1/2] " Mike Snitzer
2011-02-02 21:51             ` Vivek Goyal
2011-02-02 22:06               ` Mike Snitzer
2011-02-02 22:55             ` [PATCH v3 1/2] block: skip elevator data " Mike Snitzer
2011-02-03  9:28               ` Tejun Heo
2011-02-03 14:48                 ` [PATCH v4 " Mike Snitzer
2011-02-03 13:24               ` [PATCH v3 " Jens Axboe
2011-02-03 13:38                 ` Tejun Heo
2011-02-04 15:04                   ` Vivek Goyal
2011-02-04 15:08                     ` Tejun Heo [this message]
2011-02-04 16:58                     ` [PATCH v5 " Mike Snitzer
2011-02-03 14:54                 ` [PATCH v3 " Mike Snitzer
2011-02-01 22:46           ` [PATCH v2 2/2] block: share request flush fields with elevator_private Mike Snitzer
2011-02-02 21:52             ` Vivek Goyal
2011-02-03  9:24             ` Tejun Heo
2011-02-11 10:08             ` Jens Axboe

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=20110204150826.GJ12133@htj.dyndns.org \
    --to=tj@kernel.org \
    --cc=adilger.kernel@dilger.ca \
    --cc=cmm@us.ibm.com \
    --cc=djwong@us.ibm.com \
    --cc=hch@lst.de \
    --cc=jack@suse.cz \
    --cc=jaxboe@fusionio.com \
    --cc=jmoyer@redhat.com \
    --cc=josef@redhat.com \
    --cc=kmannth@us.ibm.com \
    --cc=linux-ext4@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=neilb@suse.de \
    --cc=rwheeler@redhat.com \
    --cc=shli@kernel.org \
    --cc=snitzer@redhat.com \
    --cc=tytso@mit.edu \
    --cc=vgoyal@redhat.com \
    --subject='Re: [PATCH v3 1/2] block: skip elevator data initialization for flush requests' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).