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[PATCH] free initrd mem adjustment

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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>
This commit is contained in:
Jan Beulich 2005-09-13 01:25:12 -07:00 committed by Linus Torvalds
parent a1a5b3d93c
commit 0f3d2bd54f
1 changed files with 10 additions and 2 deletions
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12
init/initramfs.c
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@ -466,6 +466,14 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only)
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 @@ void __init populate_rootfs(void)
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 @@ void __init populate_rootfs(void)
sys_write(fd, (char *)initrd_start,
initrd_end - initrd_start);
sys_close(fd);
free_initrd_mem(initrd_start, initrd_end);
free_initrd();
}
}
#endif