Re: Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Subject: Re: Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
From: Alasdair G Kergon <agk@xxxxxxxxxx>
Date: Thu, 31 May 2007 01:57:37 +0100
Cc: Tejun Heo <htejun@xxxxxxxxx>, David Chinner <dgc@xxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, Jens Axboe <jens.axboe@xxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, Andreas Dilger <adilger@xxxxxxxxxxxxx>
In-reply-to: <18014.6860.989819.665778@xxxxxxxxxxxxxx>
Organization: Red Hat UK Ltd. Registered in England and Wales, number 03798903. Registered Office: Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE.
References: <18006.38689.818186.221707@xxxxxxxxxxxxxx> <18010.12472.209452.148229@xxxxxxxxxxxxxx> <20070528024559.GA85884050@xxxxxxx> <18010.17713.76863.245176@xxxxxxxxxxxxxx> <20070528042926.GC85884050@xxxxxxx> <18014.6860.989819.665778@xxxxxxxxxxxxxx>
Reply-to: device-mapper development <dm-devel@xxxxxxxxxx>
User-agent: Mutt/1.4.1i

On Thu, May 31, 2007 at 10:46:04AM +1000, Neil Brown wrote:
> What if the truth changes (as can happen with md or dm)?

You get notified in endio() that the barrier had to be emulated?
 
Alasdair
-- 
agk@xxxxxxxxxx

--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel

References:
- [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
  - From: Neil Brown
- Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
  - From: Neil Brown
- Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
  - From: David Chinner
- Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
  - From: Neil Brown
- Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
  - From: David Chinner
- Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
  - From: Neil Brown

Prev by Date: Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
Next by Date: Re: Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
Previous by thread: Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
Next by thread: Re: Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.
Index(es):
- Date
- Thread

[Index of Archives] [DM Crypt] [Fedora Desktop] [ATA RAID] [Fedora Marketing] [Fedora Packaging] [Fedora SELinux] [Yosemite Discussion] [KDE Users] [Fedora Docs]