Merge ../linux-2.6-watchdog-mm

[linux-drm-fsl-dcu.git] / arch / i386 / lib / usercopy.c

diff --git a/arch/i386/lib/usercopy.c b/arch/i386/lib/usercopy.c
index 4b75212ab6dd877786057eef6b2192cfadd4d6ed..d22cfc9d656ca39317d68a1a2a0f6ec6b13bf2df 100644 (file)
--- a/arch/i386/lib/usercopy.c
+++ b/arch/i386/lib/usercopy.c
@@ -9,6 +9,7 @@
 #include <linux/highmem.h>
 #include <linux/blkdev.h>
 #include <linux/module.h>
+#include <linux/backing-dev.h>
 #include <asm/uaccess.h>
 #include <asm/mmx.h>
 
@@ -179,7 +180,7 @@ __clear_user(void __user *to, unsigned long n)
 EXPORT_SYMBOL(__clear_user);
 
 /**
- * strlen_user: - Get the size of a string in user space.
+ * strnlen_user: - Get the size of a string in user space.
  * @s: The string to measure.
  * @n: The maximum valid length
  *
@@ -739,9 +740,9 @@ survive:
                        retval = get_user_pages(current, current->mm,
                                        (unsigned long )to, 1, 1, 0, &pg, NULL);
 
-                       if (retval == -ENOMEM && current->pid == 1) {
+                       if (retval == -ENOMEM && is_init(current)) {
                                up_read(&current->mm->mmap_sem);
-                               blk_congestion_wait(WRITE, HZ/50);
+                               congestion_wait(WRITE, HZ/50);
                                goto survive;
                        }
 
@@ -843,7 +844,6 @@ unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *fr
 unsigned long
 copy_to_user(void __user *to, const void *from, unsigned long n)
 {
-       might_sleep();
        BUG_ON((long) n < 0);
        if (access_ok(VERIFY_WRITE, to, n))
                n = __copy_to_user(to, from, n);
@@ -870,7 +870,6 @@ EXPORT_SYMBOL(copy_to_user);
 unsigned long
 copy_from_user(void *to, const void __user *from, unsigned long n)
 {
-       might_sleep();
        BUG_ON((long) n < 0);
        if (access_ok(VERIFY_READ, from, n))
                n = __copy_from_user(to, from, n);