From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@digeo.com>
Cc: Alexander Viro <viro@math.psu.edu>, linux-kernel@vger.kernel.org
Subject: Re: [LART] inode mismanagement in hugetlb code
Date: Thu, 10 Oct 2002 12:43:31 -0700 [thread overview]
Message-ID: <20021010194331.GT10722@holomorphy.com> (raw)
In-Reply-To: <3DA5D374.330E5970@digeo.com>
Alexander Viro wrote:
>> a) inodes MUST have an address of valid struct super_block in their
>> ->i_sb. Had been discussed quite a few times already.
On Thu, Oct 10, 2002 at 12:22:28PM -0700, Andrew Morton wrote:
> afaict, that code only wants an inode because it is borrowing
> the pagecache functions for page lookup. It's using i_ino as
> a search key too. It has no superblock.
> Solutions might be: 1) allocate a private <int key, radix tree>
> structure or 2) require that these inodes come from hugetlbfs,
> although the "key" makes that a bit tricky.
shm clobbers hugetlbfs-assigned inode numbers with the shp->id
somewhere around newseg(), (which doesn't matter because it's the
only user of the kern_mounted fs) so ->i_ino will need to avoid
clashing there. But there are several ways to wean hugetlbpage.c off
->i_ino so it's not a big deal.
Bill
prev parent reply other threads:[~2002-10-10 19:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-10 19:00 [LART] inode mismanagement in hugetlb code Alexander Viro
2002-10-10 19:19 ` William Lee Irwin III
2002-10-10 19:22 ` Andrew Morton
2002-10-10 19:43 ` William Lee Irwin III [this message]
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