On Tue, Jan 19, 2021 at 05:30:49PM -0800, Mike Kravetz wrote: > Use new hugetlb specific HPageFreed flag to replace the > PageHugeFreed interfaces. > > Signed-off-by: Mike Kravetz <[email protected]>
Reviewed-by: Oscar Salvador <[email protected]> > --- > include/linux/hugetlb.h | 3 +++ > mm/hugetlb.c | 23 ++++------------------- > 2 files changed, 7 insertions(+), 19 deletions(-) > > diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h > index ec329b9cc0fc..8fd0970cefdb 100644 > --- a/include/linux/hugetlb.h > +++ b/include/linux/hugetlb.h > @@ -487,11 +487,13 @@ unsigned long hugetlb_get_unmapped_area(struct file > *file, unsigned long addr, > * allocator. Typically used for migration target pages when no pages > * are available in the pool. The hugetlb free page path will > * immediately free pages with this flag set to the buddy allocator. > + * HPG_freed - Set when page is on the free lists. > */ > enum hugetlb_page_flags { > HPG_restore_reserve = 0, > HPG_migratable, > HPG_temporary, > + HPG_freed, > __NR_HPAGEFLAGS, > }; > > @@ -540,6 +542,7 @@ static inline void ClearHPage##uname(struct page *page) > \ > HPAGEFLAG(RestoreReserve, restore_reserve) > HPAGEFLAG(Migratable, migratable) > HPAGEFLAG(Temporary, temporary) > +HPAGEFLAG(Freed, freed) > > #ifdef CONFIG_HUGETLB_PAGE > > diff --git a/mm/hugetlb.c b/mm/hugetlb.c > index 0d2bfc2b6adc..d5a78aedbfda 100644 > --- a/mm/hugetlb.c > +++ b/mm/hugetlb.c > @@ -79,21 +79,6 @@ DEFINE_SPINLOCK(hugetlb_lock); > static int num_fault_mutexes; > struct mutex *hugetlb_fault_mutex_table ____cacheline_aligned_in_smp; > > -static inline bool PageHugeFreed(struct page *head) > -{ > - return page_private(head + 4) == -1UL; > -} > - > -static inline void SetPageHugeFreed(struct page *head) > -{ > - set_page_private(head + 4, -1UL); > -} > - > -static inline void ClearPageHugeFreed(struct page *head) > -{ > - set_page_private(head + 4, 0); > -} > - > /* Forward declaration */ > static int hugetlb_acct_memory(struct hstate *h, long delta); > > @@ -1043,7 +1028,7 @@ static void enqueue_huge_page(struct hstate *h, struct > page *page) > list_move(&page->lru, &h->hugepage_freelists[nid]); > h->free_huge_pages++; > h->free_huge_pages_node[nid]++; > - SetPageHugeFreed(page); > + SetHPageFreed(page); > } > > static struct page *dequeue_huge_page_node_exact(struct hstate *h, int nid) > @@ -1060,7 +1045,7 @@ static struct page *dequeue_huge_page_node_exact(struct > hstate *h, int nid) > > list_move(&page->lru, &h->hugepage_activelist); > set_page_refcounted(page); > - ClearPageHugeFreed(page); > + ClearHPageFreed(page); > h->free_huge_pages--; > h->free_huge_pages_node[nid]--; > return page; > @@ -1474,7 +1459,7 @@ static void prep_new_huge_page(struct hstate *h, struct > page *page, int nid) > spin_lock(&hugetlb_lock); > h->nr_huge_pages++; > h->nr_huge_pages_node[nid]++; > - ClearPageHugeFreed(page); > + ClearHPageFreed(page); > spin_unlock(&hugetlb_lock); > } > > @@ -1747,7 +1732,7 @@ int dissolve_free_huge_page(struct page *page) > * We should make sure that the page is already on the free list > * when it is dissolved. > */ > - if (unlikely(!PageHugeFreed(head))) { > + if (unlikely(!HPageFreed(head))) { > rc = -EAGAIN; > goto out; > } > -- > 2.29.2 > > -- Oscar Salvador SUSE L3
