ide: update warm-plug HOWTO
Reported-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/Documentation/ide/warm-plug-howto.txt b/Documentation/ide/warm-plug-howto.txt
index d588546..98152bc 100644
--- a/Documentation/ide/warm-plug-howto.txt
+++ b/Documentation/ide/warm-plug-howto.txt
@@ -11,3 +11,8 @@
# echo -n "1" > /sys/class/ide_port/idex/scan
done
+
+NOTE: please make sure that partitions are unmounted and that there are
+no other active references to devices before doing "delete_devices" step,
+also do not attempt "scan" step on devices currently in use -- otherwise
+results may be unpredictable and lead to data loss if you're unlucky