Re: highmem deadlock fix [was Re: VM in 2.4.10(+tweaks) vs. 2.4.9-ac14/15(+stuff)]

Andrea Arcangeli (
Fri, 28 Sep 2001 04:24:17 +0200

On Thu, Sep 27, 2001 at 09:12:25PM -0500, Robert Macaulay wrote:
> Thanks Andrea. I'll see if we can repeat the 0-page alloc again.

Ok, it is possible the 0-page alloc failed because NOHIGHIO was
disabled, Linus's fix being less finegrined than mine could also lead
more easily to 0-page alloc failed.

However failing bounce-allocation is not important since we have the
reserved pool for those allocations. Not having to use the reserved
pool only allows an higher amount of I/O in parallel. This is why I said
we could have dropped the NOHIGHIO logic in first place if we wanted to
go the non finegrined way.

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