diff options
Diffstat (limited to 'include/linux/rmap.h')
| -rw-r--r-- | include/linux/rmap.h | 47 |
1 files changed, 19 insertions, 28 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h index 8c89e902df3e..43ef2c30cb0f 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -83,19 +83,17 @@ struct anon_vma_chain { }; enum ttu_flags { - TTU_UNMAP = 1, /* unmap mode */ - TTU_MIGRATION = 2, /* migration mode */ - TTU_MUNLOCK = 4, /* munlock mode */ - TTU_LZFREE = 8, /* lazy free mode */ - TTU_SPLIT_HUGE_PMD = 16, /* split huge PMD if any */ - - TTU_IGNORE_MLOCK = (1 << 8), /* ignore mlock */ - TTU_IGNORE_ACCESS = (1 << 9), /* don't age */ - TTU_IGNORE_HWPOISON = (1 << 10),/* corrupted page is recoverable */ - TTU_BATCH_FLUSH = (1 << 11), /* Batch TLB flushes where possible + TTU_MIGRATION = 0x1, /* migration mode */ + TTU_MUNLOCK = 0x2, /* munlock mode */ + + TTU_SPLIT_HUGE_PMD = 0x4, /* split huge PMD if any */ + TTU_IGNORE_MLOCK = 0x8, /* ignore mlock */ + TTU_IGNORE_ACCESS = 0x10, /* don't age */ + TTU_IGNORE_HWPOISON = 0x20, /* corrupted page is recoverable */ + TTU_BATCH_FLUSH = 0x40, /* Batch TLB flushes where possible * and caller guarantees they will * do a final flush if necessary */ - TTU_RMAP_LOCKED = (1 << 12) /* do not grab rmap lock: + TTU_RMAP_LOCKED = 0x80 /* do not grab rmap lock: * caller holds it */ }; @@ -193,9 +191,7 @@ static inline void page_dup_rmap(struct page *page, bool compound) int page_referenced(struct page *, int is_locked, struct mem_cgroup *memcg, unsigned long *vm_flags); -#define TTU_ACTION(x) ((x) & TTU_ACTION_MASK) - -int try_to_unmap(struct page *, enum ttu_flags flags); +bool try_to_unmap(struct page *, enum ttu_flags flags); /* Avoid racy checks */ #define PVMW_SYNC (1 << 0) @@ -239,7 +235,7 @@ int page_mkclean(struct page *); * called in munlock()/munmap() path to check for other vmas holding * the page mlocked. */ -int try_to_munlock(struct page *); +void try_to_munlock(struct page *); void remove_migration_ptes(struct page *old, struct page *new, bool locked); @@ -261,15 +257,19 @@ int page_mapped_in_vma(struct page *page, struct vm_area_struct *vma); */ struct rmap_walk_control { void *arg; - int (*rmap_one)(struct page *page, struct vm_area_struct *vma, + /* + * Return false if page table scanning in rmap_walk should be stopped. + * Otherwise, return true. + */ + bool (*rmap_one)(struct page *page, struct vm_area_struct *vma, unsigned long addr, void *arg); int (*done)(struct page *page); struct anon_vma *(*anon_lock)(struct page *page); bool (*invalid_vma)(struct vm_area_struct *vma, void *arg); }; -int rmap_walk(struct page *page, struct rmap_walk_control *rwc); -int rmap_walk_locked(struct page *page, struct rmap_walk_control *rwc); +void rmap_walk(struct page *page, struct rmap_walk_control *rwc); +void rmap_walk_locked(struct page *page, struct rmap_walk_control *rwc); #else /* !CONFIG_MMU */ @@ -285,7 +285,7 @@ static inline int page_referenced(struct page *page, int is_locked, return 0; } -#define try_to_unmap(page, refs) SWAP_FAIL +#define try_to_unmap(page, refs) false static inline int page_mkclean(struct page *page) { @@ -295,13 +295,4 @@ static inline int page_mkclean(struct page *page) #endif /* CONFIG_MMU */ -/* - * Return values of try_to_unmap - */ -#define SWAP_SUCCESS 0 -#define SWAP_AGAIN 1 -#define SWAP_FAIL 2 -#define SWAP_MLOCK 3 -#define SWAP_LZFREE 4 - #endif /* _LINUX_RMAP_H */ |