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From: Andrew Morton <akpm@osdl.org>
To: Rogier Wolff <R.E.Wolff@BitWizard.nl>
Cc: ahu@ds9a.nl, shesha@inostor.com, linux-kernel@vger.kernel.org,
	kernelnewbies@nl.linux.org
Subject: Re: O_DIRECT
Date: Sun, 25 Jul 2004 18:24:45 -0700	[thread overview]
Message-ID: <20040725182445.5b49449f.akpm@osdl.org> (raw)
In-Reply-To: <20040724095629.GA9434@bitwizard.nl>

Rogier Wolff <R.E.Wolff@BitWizard.nl> wrote:
>
> The code
>  we use is: 
> 
>    p = malloc (blocksize + PAGE_SIZE);
>    buf = (void *) ((  ((long)p) + PAGE_SIZE -1 ) & ~(PAGE_SIZE-1));

memalign() and posix_memalign() will do this for you.

  reply	other threads:[~2004-07-26  1:26 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-07-20 17:27 O_DIRECT Shesha Sreenivasamurthy
2004-07-20 18:48 ` O_DIRECT bert hubert
     [not found]   ` <40FD6FCB.5020408@inostor.com>
2004-07-20 20:17     ` O_DIRECT bert hubert
2004-07-21  0:10   ` O_DIRECT Rob van Nieuwkerk
2004-07-21 14:45   ` O_DIRECT Devel
     [not found]     ` <40FE9F3F.2090205@inostor.com>
2004-07-22  9:46       ` O_DIRECT Devel
2004-07-24  9:56   ` O_DIRECT Rogier Wolff
2004-07-26  1:24     ` Andrew Morton [this message]
2004-07-21  0:05 ` O_DIRECT Rob van Nieuwkerk
     [not found]   ` <40FEA382.8050700@inostor.com>
2004-07-21 17:20     ` O_DIRECT Rob van Nieuwkerk
     [not found]       ` <40FEAF70.4070407@inostor.com>
2004-07-21 18:15         ` O_DIRECT Rob van Nieuwkerk
2004-07-21 18:45           ` O_DIRECT Shesha Sreenivasamurthy
2004-07-21 23:18           ` O_DIRECT Shesha Sreenivasamurthy
2004-07-21 23:54             ` O_DIRECT Rob van Nieuwkerk
2004-07-22  0:00               ` O_DIRECT Shesha Sreenivasamurthy
2004-07-22  0:18                 ` O_DIRECT Rob van Nieuwkerk
2004-07-22  0:48                   ` O_DIRECT Shesha Sreenivasamurthy
     [not found] <200306262021.h5QKLhN10771@devserv.devel.redhat.com>
     [not found] ` <1056706819.2418.11.camel@sisko.scot.redhat.com>
2003-06-27 10:35   ` O_DIRECT Stephen C. Tweedie
2003-06-27 11:07     ` O_DIRECT Alan Cox
     [not found] <200208291113.g7TBDut26852@tench.street-vision.com>
2002-08-29 11:22 ` O_DIRECT Peter T. Breuer
2002-08-29 12:14 ` O_DIRECT Peter T. Breuer
  -- strict thread matches above, loose matches on Subject: below --
2002-08-29 11:04 O_DIRECT Peter T. Breuer
2001-04-12 21:09 O_DIRECT Andrea Arcangeli

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