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    SubjectRe: [RFT PATCH v2 4/5] mm: provide more accurate estimation of pages occupied by memmap


    On 12/02/12 19:55, Chris Clayton wrote:
    >
    >
    > On 11/29/12 10:52, Chris Clayton wrote:
    >> On 11/28/12 23:52, Andrew Morton wrote:
    >>> On Wed, 21 Nov 2012 23:09:46 +0800
    >>> Jiang Liu <liuj97@gmail.com> wrote:
    >>>
    >>>> Subject: Re: [RFT PATCH v2 4/5] mm: provide more accurate estimation
    >>>> of pages occupied by memmap
    >>>
    >>> How are people to test this? "does it boot"?
    >>>
    >>
    >> I've been running kernels with Gerry's 5 patches applied for 11 days
    >> now. This is on a 64bit laptop but with a 32bit kernel + HIGHMEM. I
    >> joined the conversation because my laptop would not resume from suspend
    >> to disk - it either froze or rebooted. With the patches applied the
    >> laptop does successfully resume and has been stable.
    >>
    >> Since Monday, I have have been running a kernel with the patches (plus,
    >> from today, the patch you mailed yesterday) applied to 3.7rc7, without
    >> problems.
    >>
    >
    > I've been running 3.7-rc7 with the patches listed below for a week now
    > and it has been perfectly stable. In particular, my laptop will now
    > successfully resume from suspend to disk, which always failed without
    > the patches.
    >

    I should have said, of course, that it was -rc6 and earlier that would
    not boot without Jiang Liu's patches. I applied those patches to rc-6
    and my resume after suspend to disk problem was fixed. For a subsequent
    week I have been running with the patches applied to -rc7, with Andrew's
    patch also applied for the last 3 days. -rc7 was not subject to the
    resume problem because the patch which broke it had been reverted.
    All this has been on a 64bit laptop, but running a 32bit kernel with
    HIGHMEM.

    Apologies for yesterday's inaccuracy. I shouldn't send testing reports
    when I'm in a hurry.

    > From Jiang Liu:
    > 1. [RFT PATCH v2 1/5] mm: introduce new field "managed_pages" to struct
    > zone
    > 2. [RFT PATCH v1 2/5] mm: replace zone->present_pages with
    > zone->managed_pages if appreciated
    > 3. [RFT PATCH v1 3/5] mm: set zone->present_pages to number of existing
    > pages in the zone
    > 4. [RFT PATCH v2 4/5] mm: provide more accurate estimation of pages
    > occupied by memmap
    > 5. [RFT PATCH v1 5/5] mm: increase totalram_pages when free pages
    > allocated by bootmem allocator
    >
    > From Andrew Morton:
    > 6. mm-provide-more-accurate-estimation-of-pages-occupied-by-memmap.patch
    >
    > Tested-by: Chris Clayton <chris2553@googlemail.com>
    >
    >> Thanks,
    >> Chris
    >>
    >>


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