diff options
Diffstat (limited to 'include/linux/mm_inline.h')
| -rw-r--r-- | include/linux/mm_inline.h | 43 |
1 files changed, 15 insertions, 28 deletions
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h index 8148b30a9df1..f4fe593c1400 100644 --- a/include/linux/mm_inline.h +++ b/include/linux/mm_inline.h @@ -4,6 +4,7 @@ #include <linux/atomic.h> #include <linux/huge_mm.h> +#include <linux/mm_types.h> #include <linux/swap.h> #include <linux/string.h> #include <linux/userfaultfd_k.h> @@ -231,22 +232,27 @@ static inline bool lru_gen_add_folio(struct lruvec *lruvec, struct folio *folio, if (folio_test_unevictable(folio) || !lrugen->enabled) return false; /* - * There are three common cases for this page: - * 1. If it's hot, e.g., freshly faulted in or previously hot and - * migrated, add it to the youngest generation. - * 2. If it's cold but can't be evicted immediately, i.e., an anon page - * not in swapcache or a dirty page pending writeback, add it to the - * second oldest generation. - * 3. Everything else (clean, cold) is added to the oldest generation. + * There are four common cases for this page: + * 1. If it's hot, i.e., freshly faulted in, add it to the youngest + * generation, and it's protected over the rest below. + * 2. If it can't be evicted immediately, i.e., a dirty page pending + * writeback, add it to the second youngest generation. + * 3. If it should be evicted first, e.g., cold and clean from + * folio_rotate_reclaimable(), add it to the oldest generation. + * 4. Everything else falls between 2 & 3 above and is added to the + * second oldest generation if it's considered inactive, or the + * oldest generation otherwise. See lru_gen_is_active(). */ if (folio_test_active(folio)) seq = lrugen->max_seq; else if ((type == LRU_GEN_ANON && !folio_test_swapcache(folio)) || (folio_test_reclaim(folio) && (folio_test_dirty(folio) || folio_test_writeback(folio)))) - seq = lrugen->min_seq[type] + 1; - else + seq = lrugen->max_seq - 1; + else if (reclaiming || lrugen->min_seq[type] + MIN_NR_GENS >= lrugen->max_seq) seq = lrugen->min_seq[type]; + else + seq = lrugen->min_seq[type] + 1; gen = lru_gen_from_seq(seq); flags = (gen + 1UL) << LRU_GEN_PGOFF; @@ -352,15 +358,6 @@ void lruvec_del_folio(struct lruvec *lruvec, struct folio *folio) } #ifdef CONFIG_ANON_VMA_NAME -/* - * mmap_lock should be read-locked when calling anon_vma_name(). Caller should - * either keep holding the lock while using the returned pointer or it should - * raise anon_vma_name refcount before releasing the lock. - */ -extern struct anon_vma_name *anon_vma_name(struct vm_area_struct *vma); -extern struct anon_vma_name *anon_vma_name_alloc(const char *name); -extern void anon_vma_name_free(struct kref *kref); - /* mmap_lock should be read-locked */ static inline void anon_vma_name_get(struct anon_vma_name *anon_name) { @@ -415,16 +412,6 @@ static inline bool anon_vma_name_eq(struct anon_vma_name *anon_name1, } #else /* CONFIG_ANON_VMA_NAME */ -static inline struct anon_vma_name *anon_vma_name(struct vm_area_struct *vma) -{ - return NULL; -} - -static inline struct anon_vma_name *anon_vma_name_alloc(const char *name) -{ - return NULL; -} - static inline void anon_vma_name_get(struct anon_vma_name *anon_name) {} static inline void anon_vma_name_put(struct anon_vma_name *anon_name) {} static inline void dup_anon_vma_name(struct vm_area_struct *orig_vma, |