diff options
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/mm/util.c b/mm/util.c index f126975ef23..88ea1bd661c 100644 --- a/mm/util.c +++ b/mm/util.c @@ -6,6 +6,8 @@ #include <linux/sched.h> #include <asm/uaccess.h> +#include "internal.h" + #define CREATE_TRACE_POINTS #include <trace/events/kmem.h> @@ -215,6 +217,28 @@ char *strndup_user(const char __user *s, long n) } EXPORT_SYMBOL(strndup_user); +void __vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma, + struct vm_area_struct *prev, struct rb_node *rb_parent) +{ + struct vm_area_struct *next; + + vma->vm_prev = prev; + if (prev) { + next = prev->vm_next; + prev->vm_next = vma; + } else { + mm->mmap = vma; + if (rb_parent) + next = rb_entry(rb_parent, + struct vm_area_struct, vm_rb); + else + next = NULL; + } + vma->vm_next = next; + if (next) + next->vm_prev = vma; +} + #if defined(CONFIG_MMU) && !defined(HAVE_ARCH_PICK_MMAP_LAYOUT) void arch_pick_mmap_layout(struct mm_struct *mm) { @@ -227,7 +251,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm) /* * Like get_user_pages_fast() except its IRQ-safe in that it won't fall * back to the regular GUP. - * If the architecture not support this fucntion, simply return with no + * If the architecture not support this function, simply return with no * page pinned */ int __attribute__((weak)) __get_user_pages_fast(unsigned long start, |