dev.c: emit usage for devices with unknown mount point

LUKS + btrfs on Linux gives an .st_rdev value of `0', so we
can't reliably figure out what the "device:" field in
/devXX/usage should be without parsing /proc/partitions.

Since MogileFS::Worker::Monitor only cares about the "used:" and
"total:" fields, we'll just emit "(?)" in the device field.  The
effort of parsing /proc/partitions to correctly display a field
that our only known consumer won't use is a waste of our time.

1 files changed, 1 insertions, 0 deletions

diff --git a/cmogstored.h b/cmogstored.h
index 081ffbf..35ddc73 100644
--- a/cmogstored.h
+++ b/cmogstored.h
@@ -108,6 +108,7 @@ struct mog_ioq {
 struct mog_wbuf;
 struct mog_dev {
         dev_t st_dev;
+        unsigned no_me_warned : 1;
         uint32_t devid;
         pthread_mutex_t usage_lock; /* protects usage_txt */
         unsigned usage_len;