From: Neil Brown Date: Sun, 8 Jan 2006 09:03:18 +0000 (-0800) Subject: [PATCH] pivot_root: add comment X-Git-Tag: firefly_0821_release~39496 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4a0d11fae57989e24fe2ee3eff6d62d72db9716c;p=firefly-linux-kernel-4.4.55.git [PATCH] pivot_root: add comment Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/namespace.c b/fs/namespace.c index 2019899f2ab8..e5aa1eeb5748 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1526,6 +1526,10 @@ static void chroot_fs_refs(struct nameidata *old_nd, struct nameidata *new_nd) * pointed to by put_old must yield the same directory as new_root. No other * file system may be mounted on put_old. After all, new_root is a mountpoint. * + * Also, the current root cannot be on the 'rootfs' (initial ramfs) filesystem. + * See Documentation/filesystems/ramfs-rootfs-initramfs.txt for alternatives + * in this situation. + * * Notes: * - we don't move root/cwd if they are not at the root (reason: if something * cared enough to change them, it's probably wrong to force them elsewhere)