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    Subject[PATCH v2 6/6] writeback: define GDTC_INIT_NO_WB to null
    Date
    We never use gdtc->dom set with GDTC_INIT_NO_WB, just remove unneeded
    initialization of gdtc->dom for now.

    Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
    ---
    mm/page-writeback.c | 4 +---
    1 file changed, 1 insertion(+), 3 deletions(-)

    diff --git a/mm/page-writeback.c b/mm/page-writeback.c
    index 211565d01600..2fd2fd2e1932 100644
    --- a/mm/page-writeback.c
    +++ b/mm/page-writeback.c
    @@ -147,6 +147,7 @@ struct dirty_throttle_control {
    * reflect changes in current writeout rate.
    */
    #define VM_COMPLETIONS_PERIOD_LEN (3*HZ)
    +#define GDTC_INIT_NO_WB

    #ifdef CONFIG_CGROUP_WRITEBACK

    @@ -154,8 +155,6 @@ struct dirty_throttle_control {
    .dom = &global_wb_domain, \
    .wb_completions = &(__wb)->completions

    -#define GDTC_INIT_NO_WB .dom = &global_wb_domain
    -
    #define MDTC_INIT(__wb, __gdtc) .wb = (__wb), \
    .dom = mem_cgroup_wb_domain(__wb), \
    .wb_completions = &(__wb)->memcg_completions, \
    @@ -210,7 +209,6 @@ static void wb_min_max_ratio(struct bdi_writeback *wb,

    #define GDTC_INIT(__wb) .wb = (__wb), \
    .wb_completions = &(__wb)->completions
    -#define GDTC_INIT_NO_WB
    #define MDTC_INIT(__wb, __gdtc)

    static bool mdtc_valid(struct dirty_throttle_control *dtc)
    --
    2.30.0

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