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    Subject[PATCH v2 0/3] trim the uses of compound_head()
    From
    Patch series "mm: lru related cleanups" starting at commit 42895ea73bcd
    ("mm/vmscan.c: use add_page_to_lru_list()") bloated vmlinux by 1777
    bytes, according to:
    https://lore.kernel.org/linux-mm/85b3e8f2-5982-3329-c20d-cf062b8da71e@suse.cz/

    It turned out many places inline Page{Active,Unevictable} which in
    turn include compound_head().

    From the v1:
    Removing compound_head() entirely from Page{Active,Unevictable} may
    not be the best option (for the moment) because there may be other
    cases that need compound_head().

    In addition to picking a couple pieces of low-hanging fruit, this v2
    removes compound_head() completely from Page{Active,Unevictable}.

    bloat-o-meter result before and after the series:
    add/remove: 0/0 grow/shrink: 6/92 up/down: 697/-7656 (-6959)

    Yu Zhao (3):
    mm: bypass compound_head() for PF_NO_TAIL when enforce=1
    mm: use PF_NO_TAIL for PG_lru
    mm: use PF_ONLY_HEAD for PG_active and PG_unevictable

    fs/proc/task_mmu.c | 3 ++-
    include/linux/page-flags.h | 16 ++++++++--------
    2 files changed, 10 insertions(+), 9 deletions(-)

    --
    2.30.1.766.gb4fecdf3b7-goog

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