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    Subject[PATCH v4 07/14] mm, page_alloc: print symbolic gfp_flags on allocation failure
    Date
    It would be useful to translate gfp_flags into string representation when
    printing in case of an allocation failure, especially as the flags have been
    undergoing some changes recently and the script ./scripts/gfp-translate needs
    a matching source version to be accurate.

    Example output:

    stapio: page allocation failure: order:9, mode:0x2080020(GFP_ATOMIC)

    Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
    Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
    Cc: Minchan Kim <minchan@kernel.org>
    Cc: Sasha Levin <sasha.levin@oracle.com>
    Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
    Cc: Mel Gorman <mgorman@suse.de>
    Acked-by: Michal Hocko <mhocko@suse.com>
    ---
    mm/page_alloc.c | 5 ++---
    1 file changed, 2 insertions(+), 3 deletions(-)

    diff --git a/mm/page_alloc.c b/mm/page_alloc.c
    index d60c8600e5f6..f89f51aae9a6 100644
    --- a/mm/page_alloc.c
    +++ b/mm/page_alloc.c
    @@ -2691,9 +2691,8 @@ void warn_alloc_failed(gfp_t gfp_mask, unsigned int order, const char *fmt, ...)
    va_end(args);
    }

    - pr_warn("%s: page allocation failure: order:%u, mode:0x%x\n",
    - current->comm, order, gfp_mask);
    -
    + pr_warn("%s: page allocation failure: order:%u, mode:%#x(%pGg)\n",
    + current->comm, order, gfp_mask, &gfp_mask);
    dump_stack();
    if (!should_suppress_show_mem())
    show_mem(filter);
    --
    2.7.0
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