x86/smpboot: Init apic mapping before usage

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

diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
index 07514d4..be8dc8d 100644 (file)
--- a/mm/process_vm_access.c
+++ b/mm/process_vm_access.c
@@ -88,12 +88,16 @@ static int process_vm_rw_single_vec(unsigned long addr,
        ssize_t rc = 0;
        unsigned long max_pages_per_loop = PVM_MAX_KMALLOC_PAGES
                / sizeof(struct pages *);
+       unsigned int flags = FOLL_REMOTE;
 
        /* Work out address and page range required */
        if (len == 0)
                return 0;
        nr_pages = (addr + len - 1) / PAGE_SIZE - addr / PAGE_SIZE + 1;
 
+       if (vm_write)
+               flags |= FOLL_WRITE;
+
        while (!rc && nr_pages && iov_iter_count(iter)) {
                int pages = min(nr_pages, max_pages_per_loop);
                size_t bytes;
@@ -104,8 +108,7 @@ static int process_vm_rw_single_vec(unsigned long addr,
                 * current/current->mm
                 */
                pages = __get_user_pages_unlocked(task, mm, pa, pages,
-                                                 vm_write, 0, process_pages,
-                                                 FOLL_REMOTE);
+                                                 process_pages, flags);
                if (pages <= 0)
                        return -EFAULT;