On Thu, Jun 23, 2022 at 01:06:24AM +0800, Miaohe Lin wrote: > Add helper __get_deferred_split_queue to remove the duplicated codes of > getting ds_queue. No functional change intended. > Sorry, I suggest dropping this change since I have reworked the code here [1]. [1] https://lore.kernel.org/all/20220621125658.64935-7-songmuchun@xxxxxxxxxxxxx/ > Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> > --- > mm/huge_memory.c | 35 ++++++++++++----------------------- > 1 file changed, 12 insertions(+), 23 deletions(-) > > diff --git a/mm/huge_memory.c b/mm/huge_memory.c > index 0030b4f67cd9..de8155ff584c 100644 > --- a/mm/huge_memory.c > +++ b/mm/huge_memory.c > @@ -555,25 +555,23 @@ pmd_t maybe_pmd_mkwrite(pmd_t pmd, struct vm_area_struct *vma) > return pmd; > } > > -#ifdef CONFIG_MEMCG > -static inline struct deferred_split *get_deferred_split_queue(struct page *page) > +static inline struct deferred_split *__get_deferred_split_queue(struct pglist_data *pgdat, > + struct mem_cgroup *memcg) > { > - struct mem_cgroup *memcg = page_memcg(compound_head(page)); > - struct pglist_data *pgdat = NODE_DATA(page_to_nid(page)); > - > +#ifdef CONFIG_MEMCG > if (memcg) > return &memcg->deferred_split_queue; > - else > - return &pgdat->deferred_split_queue; > +#endif > + return &pgdat->deferred_split_queue; > } > -#else > + > static inline struct deferred_split *get_deferred_split_queue(struct page *page) > { > + struct mem_cgroup *memcg = page_memcg(compound_head(page)); > struct pglist_data *pgdat = NODE_DATA(page_to_nid(page)); > > - return &pgdat->deferred_split_queue; > + return __get_deferred_split_queue(pgdat, memcg); > } > -#endif > > void prep_transhuge_page(struct page *page) > { > @@ -2774,31 +2772,22 @@ void deferred_split_huge_page(struct page *page) > static unsigned long deferred_split_count(struct shrinker *shrink, > struct shrink_control *sc) > { > - struct pglist_data *pgdata = NODE_DATA(sc->nid); > - struct deferred_split *ds_queue = &pgdata->deferred_split_queue; > + struct deferred_split *ds_queue; > > -#ifdef CONFIG_MEMCG > - if (sc->memcg) > - ds_queue = &sc->memcg->deferred_split_queue; > -#endif > + ds_queue = __get_deferred_split_queue(NODE_DATA(sc->nid), sc->memcg); > return READ_ONCE(ds_queue->split_queue_len); > } > > static unsigned long deferred_split_scan(struct shrinker *shrink, > struct shrink_control *sc) > { > - struct pglist_data *pgdata = NODE_DATA(sc->nid); > - struct deferred_split *ds_queue = &pgdata->deferred_split_queue; > + struct deferred_split *ds_queue; > unsigned long flags; > LIST_HEAD(list), *pos, *next; > struct page *page; > int split = 0; > > -#ifdef CONFIG_MEMCG > - if (sc->memcg) > - ds_queue = &sc->memcg->deferred_split_queue; > -#endif > - > + ds_queue = __get_deferred_split_queue(NODE_DATA(sc->nid), sc->memcg); > spin_lock_irqsave(&ds_queue->split_queue_lock, flags); > /* Take pin on all head pages to avoid freeing them under us */ > list_for_each_safe(pos, next, &ds_queue->split_queue) { > -- > 2.23.0 > >
