Mail forwarded from linux-kernel -------- Original Message -------- Subject: mount-2.12r-ggk.tar.gz Date: Tue, 19 Jun 2007 14:38:59 +0200 (MEST) From: <Andries.Brouwer@xxxxxx> To: linux-kernel@xxxxxxxxxxxxxxx The present situation of util-linux and mount is not quite clear to me. On kernel.org under utils/util-linux nothing has happened for over a year, and there is also an empty utils/util-linux-ng. Anyway, Dirk Gerrits, René Gabriël and Peter Kooijmans sent me a patch to add support for shared subtrees to the mount from util-linux 2.12r, and I put up the result for ftp at ftp://ftp.win.tue.nl/pub/linux-local/utils/mount/mount-2.12r-ggk.tar.gz They remark that it feels like a kernel bug that --make-unbindable is not reset by --make-private and suggest the patch --- pnode.old 2007-04-17 12:53:11.000000000 +0200 +++ pnode.c 2007-04-17 13:22:03.000000000 +0200 @@ -83,6 +83,8 @@ mnt->mnt_master = NULL; if (type == MS_UNBINDABLE) mnt->mnt_flags |= MNT_UNBINDABLE; + else + mnt->mnt_flags &= ~MNT_UNBINDABLE; } } (with white-space damage - my cut&paste). Without this patch one needs the detour "--make-shared; --make-private" in order to reset the "unbindable" flag for a private tree. Andries [By the way, this shared subtree stuff is a bit messy, and impossible to support correctly by mount without help from the kernel. So far the shared/slave/unbindable status of mounts is not visible in /proc/mounts or /proc/$$/mountstats. The above mount makes a feeble attempt to record these flags in /etc/mtab, but will fail in any nontrivial situation.] - To unsubscribe from this list: send the line "unsubscribe util-linux-ng" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
