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    Subject[PATCH 4.4 15/33] mm: hide a #warning for COMPILE_TEST
    Date
    4.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Arnd Bergmann <arnd@arndb.de>

    commit af27d9403f5b80685b79c88425086edccecaf711 upstream.

    We get a warning about some slow configurations in randconfig kernels:

    mm/memory.c:83:2: error: #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid. [-Werror=cpp]

    The warning is reasonable by itself, but gets in the way of randconfig
    build testing, so I'm hiding it whenever CONFIG_COMPILE_TEST is set.

    The warning was added in 2013 in commit 75980e97dacc ("mm: fold
    page->_last_nid into page->flags where possible").

    Cc: stable@vger.kernel.org
    Signed-off-by: Arnd Bergmann <arnd@arndb.de>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    mm/memory.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/mm/memory.c
    +++ b/mm/memory.c
    @@ -72,7 +72,7 @@

    #include "internal.h"

    -#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS
    +#if defined(LAST_CPUPID_NOT_IN_PAGE_FLAGS) && !defined(CONFIG_COMPILE_TEST)
    #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.
    #endif


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