Commit 3a1122d2 authored Jul 30, 2014 by David Rientjes Committed by Linus Torvalds Jul 30, 2014

kexec: fix build error when hugetlbfs is disabled



free_huge_page() is undefined without CONFIG_HUGETLBFS and there's no
need to filter PageHuge() page is such a configuration either, so avoid
exporting the symbol to fix a build error:

   In file included from kernel/kexec.c:14:0:
   kernel/kexec.c: In function 'crash_save_vmcoreinfo_init':
   kernel/kexec.c:1623:20: error: 'free_huge_page' undeclared (first use in this function)
     VMCOREINFO_SYMBOL(free_huge_page);
                       ^

Introduced by commit 8f1d26d0 ("kexec: export free_huge_page to
VMCOREINFO")

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Acked-by: Olof Johansson <olof@lixom.net>
Cc: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 4d0bd657

kernel/kexec.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1620,7 +1620,9 @@ static int __init crash_save_vmcoreinfo_init(void)
		#endif
		VMCOREINFO_NUMBER(PG_head_mask);
		VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE);
		#ifdef CONFIG_HUGETLBFS
		VMCOREINFO_SYMBOL(free_huge_page);
		#endif

		arch_crash_save_vmcoreinfo();
		update_vmcoreinfo_note();

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