From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu, 8 Jun 2000 13:20:38 -0700
From: Chip Salzenberg <chip@valinux.com>
Subject: Re: raid0 and buffers larger than PAGE_SIZE
Message-ID: <20000608132038.C601@perlsupport.com>
References: <20000607204444.A453@perlsupport.com> <20000608150821.G3886@redhat.com>
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In-Reply-To: <20000608150821.G3886@redhat.com>; from sct@redhat.com on Thu, Jun 08, 2000 at 03:08:21PM +0100
Sender: owner-linux-mm@kvack.org
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To: "Stephen C. Tweedie" <sct@redhat.com>
Cc: linux-mm@kvack.org
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According to Stephen C. Tweedie:
> getblk() with blocksize > PAGE_SIZE is completely illegal.

I've recommended to Alan that he apply the below patch, which reverts
a change in 2.2.16 that kills raid0 for me:

Index: drivers/block/md.c
*************** static int do_md_run (int minor, int rep
*** 447,452 ****
    factor = min = 1 << FACTOR_SHIFT(FACTOR((md_dev+minor)));
    
-   md_blocksizes[minor] <<= FACTOR_SHIFT(FACTOR((md_dev+minor)));
- 
    for (i=0; i<md_dev[minor].nb_dev; i++)
      if (md_dev[minor].devices[i].size<min)
--- 447,450 ----

-- 
Chip Salzenberg              - a.k.a. -              <chip@valinux.com>
"I wanted to play hopscotch with the impenetrable mystery of existence,
    but he stepped in a wormhole and had to go in early."  // MST3K
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