diff options
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index ddd2d6a46f1b..785409805ed7 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -853,6 +853,7 @@ int numa_migrate_prep(struct page *page, struct vm_area_struct *vma, unsigned long addr, int page_nid, int *flags); void free_zone_device_page(struct page *page); +int migrate_device_coherent_page(struct page *page); /* * mm/gup.c @@ -863,4 +864,22 @@ DECLARE_PER_CPU(struct per_cpu_nodestat, boot_nodestats); extern bool mirrored_kernelcore; +static inline bool vma_soft_dirty_enabled(struct vm_area_struct *vma) +{ + /* + * NOTE: we must check this before VM_SOFTDIRTY on soft-dirty + * enablements, because when without soft-dirty being compiled in, + * VM_SOFTDIRTY is defined as 0x0, then !(vm_flags & VM_SOFTDIRTY) + * will be constantly true. + */ + if (!IS_ENABLED(CONFIG_MEM_SOFT_DIRTY)) + return false; + + /* + * Soft-dirty is kind of special: its tracking is enabled when the + * vma flags not set. + */ + return !(vma->vm_flags & VM_SOFTDIRTY); +} + #endif /* __MM_INTERNAL_H */ |