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authorNeil Brown <neilb@suse.de>2006-01-08 01:03:18 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-08 20:13:55 -0800
commit4a0d11fae57989e24fe2ee3eff6d62d72db9716c (patch)
tree5d91ff28e650e82e9318db7d9be5f74d43880214
parentc809406b4f2dfac9006d7eb8dca6b9f990f10b61 (diff)
[PATCH] pivot_root: add comment
Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--fs/namespace.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 2019899f2ab..e5aa1eeb574 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)