patch-2.4.3 linux/drivers/char/drm/bufs.c

• Lines: 13
• Date: Mon Mar 19 12:35:08 2001
• Orig file: v2.4.2/linux/drivers/char/drm/bufs.c
• Orig date: Tue Aug 29 14:09:15 2000

diff -u --recursive --new-file v2.4.2/linux/drivers/char/drm/bufs.c linux/drivers/char/drm/bufs.c
@@ -485,10 +485,10 @@
 		return -EFAULT;
 
 	if (request.count >= dma->buf_count) {
-		down(&current->mm->mmap_sem);
+		down_write(&current->mm->mmap_sem);
 		virtual = do_mmap(filp, 0, dma->byte_count,
 				  PROT_READ|PROT_WRITE, MAP_SHARED, 0);
-		up(&current->mm->mmap_sem);
+		up_write(&current->mm->mmap_sem);
 		if (virtual > -1024UL) {
 				/* Real error */
 			retcode = (signed long)virtual;