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linux/include
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Atsushi Kumagai 8f1d26d0e5 kexec: export free_huge_page to VMCOREINFO 
PG_head_mask was added into VMCOREINFO to filter huge pages in b3acc56bfe
("kexec: save PG_head_mask in VMCOREINFO"), but makedumpfile still need
another symbol to filter *hugetlbfs* pages.

If a user hope to filter user pages, makedumpfile tries to exclude them by
checking the condition whether the page is anonymous, but hugetlbfs pages
aren't anonymous while they also be user pages.

We know it's possible to detect them in the same way as PageHuge(),
so we need the start address of free_huge_page():

    int PageHuge(struct page *page)
    {
            if (!PageCompound(page))
                    return 0;

            page = compound_head(page);
            return get_compound_page_dtor(page) == free_huge_page;
    }

For that reason, this patch changes free_huge_page() into public
to export it to VMCOREINFO.

Signed-off-by: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-07-30 17:16:13 -07:00
..
acpi ACPI / i915: ignore firmware requests for backlight change 2014-07-07 23:38:05 +02:00
asm-generic core: fix typo in percpu read_mostly section 2014-07-01 16:45:22 -04:00
clocksource
crypto
drm sound fixes for 3.16-rc4 2014-07-04 08:56:57 -07:00
dt-bindings Two regression fixes for omaps and one fix for device signaling: 2014-07-24 14:06:33 +02:00
keys
kvm
linux kexec: export free_huge_page to VMCOREINFO 2014-07-30 17:16:13 -07:00
math-emu
media Merge branch 'topic/omap3isp' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2014-06-12 23:04:28 -07:00
memory
misc
net ip: make IP identifiers less predictable 2014-07-28 18:46:34 -07:00
pcmcia
ras
rdma
rxrpc
scsi SCSI for-linus on 20140705 2014-07-06 12:08:30 -07:00
sound ALSA: control: Protect user controls against concurrent access 2014-06-18 15:12:33 +02:00
target
trace tracing: Add __field_struct macro for TRACE_EVENT() 2014-06-21 00:18:42 -04:00
uapi fuse: add FUSE_NO_OPEN_SUPPORT flag to INIT 2014-07-22 16:37:43 +02:00
video Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-06-12 11:32:30 -07:00
xen Fix BUG when trying to expand the grant table. This seems to occur 2014-07-30 09:00:20 -07:00
Kbuild