Merge tag 'denywrite-for-5.15' of git://github.com/davidhildenbrand/linux

[linux-2.6-microblaze.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 56b1cd4..50e2c29 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -281,7 +281,6 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_GROWSDOWN   0x00000100      /* general info on the segment */
 #define VM_UFFD_MISSING        0x00000200      /* missing pages tracking */
 #define VM_PFNMAP      0x00000400      /* Page-ranges managed without "struct page", just pure PFN */
-#define VM_DENYWRITE   0x00000800      /* ETXTBSY on write attempts.. */
 #define VM_UFFD_WP     0x00001000      /* wrprotect pages tracking */
 
 #define VM_LOCKED      0x00002000
@@ -829,6 +828,8 @@ static inline void *kvcalloc(size_t n, size_t size, gfp_t flags)
        return kvmalloc_array(n, size, flags | __GFP_ZERO);
 }
 
+extern void *kvrealloc(const void *p, size_t oldsize, size_t newsize,
+               gfp_t flags);
 extern void kvfree(const void *addr);
 extern void kvfree_sensitive(const void *addr, size_t len);
 
@@ -1214,18 +1215,10 @@ static inline void get_page(struct page *page)
 }
 
 bool __must_check try_grab_page(struct page *page, unsigned int flags);
-__maybe_unused struct page *try_grab_compound_head(struct page *page, int refs,
-                                                  unsigned int flags);
+struct page *try_grab_compound_head(struct page *page, int refs,
+                                   unsigned int flags);
 
-
-static inline __must_check bool try_get_page(struct page *page)
-{
-       page = compound_head(page);
-       if (WARN_ON_ONCE(page_ref_count(page) <= 0))
-               return false;
-       page_ref_inc(page);
-       return true;
-}
+struct page *try_get_compound_head(struct page *page, int refs);
 
 static inline void put_page(struct page *page)
 {
@@ -1847,7 +1840,6 @@ int __account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc,
 struct kvec;
 int get_kernel_pages(const struct kvec *iov, int nr_pages, int write,
                        struct page **pages);
-int get_kernel_page(unsigned long start, int write, struct page **pages);
 struct page *get_dump_page(unsigned long addr);
 
 extern int try_to_release_page(struct page * page, gfp_t gfp_mask);
@@ -3120,7 +3112,7 @@ extern void memory_failure_queue_kick(int cpu);
 extern int unpoison_memory(unsigned long pfn);
 extern int sysctl_memory_failure_early_kill;
 extern int sysctl_memory_failure_recovery;
-extern void shake_page(struct page *p, int access);
+extern void shake_page(struct page *p);
 extern atomic_long_t num_poisoned_pages __read_mostly;
 extern int soft_offline_page(unsigned long pfn, int flags);