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From: Karthik Sarangan <karthiks@cdac.in>
To: Joel Becker <Joel.Becker@oracle.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: O_DIRECT for block device
Date: Fri, 23 Sep 2005 11:06:13 +0530	[thread overview]
Message-ID: <4333944D.2060503@cdac.in> (raw)
In-Reply-To: <20050922152028.GJ27375@ca-server1.us.oracle.com>

Joel Becker wrote:
> On Thu, Sep 22, 2005 at 04:59:20PM +0530, Karthik Sarangan wrote:
> 
>>I tried your tip and the read works beautifully but the write returns -1 
>>and errno = EBADF!
> 
> 
> 	Did you open with O_RDWR?
> 
> Joel
> 

Alright I didn't, though using O_DIRECT | O_RDWR the second time solved 
it :-) I finally got 69MBps read and 49 MBps writes on my SCSI disk.

Thanks for helping me out.

      parent reply	other threads:[~2005-09-23  5:42 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-22  8:21 O_DIRECT for block device Karthik Sarangan
2005-09-22  8:34 ` Avi Kivity
2005-09-22  8:40 ` Joel Becker
     [not found]   ` <43329590.3050006@cdac.in>
     [not found]     ` <20050922152028.GJ27375@ca-server1.us.oracle.com>
2005-09-23  5:36       ` Karthik Sarangan [this message]

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