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

• Lines: 22
• Date: Mon Mar 19 12:35:08 2001
• Orig file: v2.4.2/linux/drivers/char/drm/radeon_bufs.c
• Orig date: Sat Feb 3 19:51:27 2001

diff -u --recursive --new-file v2.4.2/linux/drivers/char/drm/radeon_bufs.c linux/drivers/char/drm/radeon_bufs.c
@@ -240,17 +240,17 @@
 				goto done;
 			}
 
-			down(&current->mm->mmap_sem);
+			down_write(&current->mm->mmap_sem);
 			virtual = do_mmap(filp, 0, map->size,
 					  PROT_READ|PROT_WRITE,
 					  MAP_SHARED,
 					  (unsigned long)map->offset);
-			up(&current->mm->mmap_sem);
+			up_write(&current->mm->mmap_sem);
 		} else {
-			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 */