[PATCH] free initrd mem adjustment
Besides freeing initrd memory, also clear out the now dangling pointers to
it, to make sure accidental late use attempts can be detected.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/init/initramfs.c b/init/initramfs.c
index 02c5ce6..0c5d9a3 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -466,6 +466,14 @@
extern char __initramfs_start[], __initramfs_end[];
#ifdef CONFIG_BLK_DEV_INITRD
#include <linux/initrd.h>
+
+static void __init free_initrd(void)
+{
+ free_initrd_mem(initrd_start, initrd_end);
+ initrd_start = 0;
+ initrd_end = 0;
+}
+
#endif
void __init populate_rootfs(void)
@@ -484,7 +492,7 @@
printk(" it is\n");
unpack_to_rootfs((char *)initrd_start,
initrd_end - initrd_start, 0);
- free_initrd_mem(initrd_start, initrd_end);
+ free_initrd();
return;
}
printk("it isn't (%s); looks like an initrd\n", err);
@@ -493,7 +501,7 @@
sys_write(fd, (char *)initrd_start,
initrd_end - initrd_start);
sys_close(fd);
- free_initrd_mem(initrd_start, initrd_end);
+ free_initrd();
}
}
#endif