Messages in this thread Patch in this message | | | Date | Sun, 16 Nov 2008 23:14:08 -0800 | From | Greg KH <> | Subject | [patch 01/46] touch_mnt_namespace when the mount flags change |
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2.6.27-stable review patch. If anyone has any objections, please let us know.
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From: Dan Williams <dan.j.williams@intel.com>
commit 0e55a7cca4b66f625d67b292f80b6a976e77c51b upstream
Daemons that need to be launched while the rootfs is read-only can now poll /proc/mounts to be notified when their O_RDWR requests may no longer end in EROFS.
Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- fs/namespace.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
--- a/fs/namespace.c +++ b/fs/namespace.c @@ -1553,8 +1553,13 @@ static noinline int do_remount(struct na if (!err) nd->path.mnt->mnt_flags = mnt_flags; up_write(&sb->s_umount); - if (!err) + if (!err) { security_sb_post_remount(nd->path.mnt, flags, data); + + spin_lock(&vfsmount_lock); + touch_mnt_namespace(nd->path.mnt->mnt_ns); + spin_unlock(&vfsmount_lock); + } return err; } --
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