vserver 2.0 rc7

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

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3a8c47c..17518fe 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -37,10 +37,6 @@ extern int sysctl_legacy_va_layout;
 #include <asm/processor.h>
 #include <asm/atomic.h>
 
-#ifndef MM_VM_SIZE
-#define MM_VM_SIZE(mm) ((TASK_SIZE + PGDIR_SIZE - 1) & PGDIR_MASK)
-#endif
-
 #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
 
 /*
@@ -164,6 +160,7 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_ACCOUNT     0x00100000      /* Is a VM accounted object */
 #define VM_HUGETLB     0x00400000      /* Huge TLB Page VM */
 #define VM_NONLINEAR   0x00800000      /* Is non-linear (remap_file_pages) */
+#define VM_MAPPED_COPY 0x01000000      /* T if mapped copy of data (nommu mmap) */
 
 #ifndef VM_STACK_DEFAULT_FLAGS         /* arch can override this */
 #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
@@ -581,17 +578,19 @@ struct zap_details {
        pgoff_t first_index;                    /* Lowest page->index to unmap */
        pgoff_t last_index;                     /* Highest page->index to unmap */
        spinlock_t *i_mmap_lock;                /* For unmap_mapping_range: */
-       unsigned long break_addr;               /* Where unmap_vmas stopped */
        unsigned long truncate_count;           /* Compare vm_truncate_count */
 };
 
-void zap_page_range(struct vm_area_struct *vma, unsigned long address,
+unsigned long zap_page_range(struct vm_area_struct *vma, unsigned long address,
                unsigned long size, struct zap_details *);
-int unmap_vmas(struct mmu_gather **tlbp, struct mm_struct *mm,
+unsigned long unmap_vmas(struct mmu_gather **tlb, struct mm_struct *mm,
                struct vm_area_struct *start_vma, unsigned long start_addr,
                unsigned long end_addr, unsigned long *nr_accounted,
                struct zap_details *);
-void clear_page_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end);
+void free_pgd_range(struct mmu_gather **tlb, unsigned long addr,
+               unsigned long end, unsigned long floor, unsigned long ceiling);
+void free_pgtables(struct mmu_gather **tlb, struct vm_area_struct *start_vma,
+               unsigned long floor, unsigned long ceiling);
 int copy_page_range(struct mm_struct *dst, struct mm_struct *src,
                        struct vm_area_struct *vma);
 int zeromap_page_range(struct vm_area_struct *vma, unsigned long from,
@@ -638,9 +637,9 @@ extern unsigned long do_mremap(unsigned long addr,
  * These functions are passed a count `nr_to_scan' and a gfpmask.  They should
  * scan `nr_to_scan' objects, attempting to free them.
  *
- * The callback must the number of objects which remain in the cache.
+ * The callback must return the number of objects which remain in the cache.
  *
- * The callback will be passes nr_to_scan == 0 when the VM is querying the
+ * The callback will be passed nr_to_scan == 0 when the VM is querying the
  * cache size, so a fastpath for that case is appropriate.
  */
 typedef int (*shrinker_t)(int nr_to_scan, unsigned int gfp_mask);
@@ -727,6 +726,7 @@ extern void __vma_link_rb(struct mm_struct *, struct vm_area_struct *,
 extern struct vm_area_struct *copy_vma(struct vm_area_struct **,
        unsigned long addr, unsigned long len, pgoff_t pgoff);
 extern void exit_mmap(struct mm_struct *);
+extern int may_expand_vm(struct mm_struct *mm, unsigned long npages);
 
 extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
 
@@ -838,7 +838,7 @@ static inline void vm_stat_unaccount(struct vm_area_struct *vma)
 }
 
 /* update per process rss and vm hiwater data */
-extern void update_mem_hiwater(void);
+extern void update_mem_hiwater(struct task_struct *tsk);
 
 #ifndef CONFIG_DEBUG_PAGEALLOC
 static inline void
@@ -856,5 +856,8 @@ int in_gate_area_no_task(unsigned long addr);
 #define in_gate_area(task, addr) ({(void)task; in_gate_area_no_task(addr);})
 #endif /* __HAVE_ARCH_GATE_AREA */
 
+/* /proc/<pid>/oom_adj set to -17 protects from the oom-killer */
+#define OOM_DISABLE -17
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_MM_H */