x86/smpboot: Init apic mapping before usage

[cascardo/linux.git] / mm / util.c

diff --git a/mm/util.c b/mm/util.c
index 662cddf..1a41553 100644 (file)
--- a/mm/util.c
+++ b/mm/util.c
@@ -230,8 +230,10 @@ void __vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma,
 }
 
 /* Check if the vma is being used as a stack by this task */
-int vma_is_stack_for_task(struct vm_area_struct *vma, struct task_struct *t)
+int vma_is_stack_for_current(struct vm_area_struct *vma)
 {
+       struct task_struct * __maybe_unused t = current;
+
        return (vma->vm_start <= KSTK_ESP(t) && vma->vm_end >= KSTK_ESP(t));
 }
 
@@ -283,7 +285,8 @@ EXPORT_SYMBOL_GPL(__get_user_pages_fast);
 int __weak get_user_pages_fast(unsigned long start,
                                int nr_pages, int write, struct page **pages)
 {
-       return get_user_pages_unlocked(start, nr_pages, write, 0, pages);
+       return get_user_pages_unlocked(start, nr_pages, pages,
+                                      write ? FOLL_WRITE : 0);
 }
 EXPORT_SYMBOL_GPL(get_user_pages_fast);
 
@@ -623,7 +626,7 @@ int get_cmdline(struct task_struct *task, char *buffer, int buflen)
        if (len > buflen)
                len = buflen;
 
-       res = access_process_vm(task, arg_start, buffer, len, 0);
+       res = access_process_vm(task, arg_start, buffer, len, FOLL_FORCE);
 
        /*
         * If the nul at the end of args has been overwritten, then
@@ -638,7 +641,8 @@ int get_cmdline(struct task_struct *task, char *buffer, int buflen)
                        if (len > buflen - res)
                                len = buflen - res;
                        res += access_process_vm(task, env_start,
-                                                buffer+res, len, 0);
+                                                buffer+res, len,
+                                                FOLL_FORCE);
                        res = strnlen(buffer, res);
                }
        }