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Re: %u-order allocation failed

To: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>, Mikulas Patocka <mikulas@xxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: %u-order allocation failed
From: Alex Bligh - linux-kernel <linux-kernel@xxxxxxxxxxx>
Date: Mon, 08 Oct 2001 16:08:43 +0100
Cc: Rik van Riel <riel@xxxxxxxxxxxxxxxx>, Krzysztof Rusocki <kszysiu@xxxxxxxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Alex Bligh - linux-kernel <linux-kernel@xxxxxxxxxxx>
In-reply-to: <E15qLzV-00071D-00@xxxxxxxxxxxxxxxxx>
References: <E15qLzV-00071D-00@xxxxxxxxxxxxxxxxx>
Reply-to: Alex Bligh - linux-kernel <linux-kernel@xxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx


--On Sunday, October 07, 2001 11:01 PM +0100 Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:

vmalloc space fragments. You fragment address space rather than pages
thats all. Same problem

Actually fragmented virtual space is theoretically
worse, as you have now lost a possible weapon to
defragment stuff (indirection on mapping to physical RAM -
i.e. you could no longer move or swap out physical RAM and
keep the virtual address mapping the same).

--
Alex Bligh


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