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Subject[PATCH 05/11] drbd: Fix the maximum accepted minor device number
Date
From: Andreas Gruenbacher <agruen@linbit.com>

The maximum minor device number allowed by the kernel is (1<<20 - 1). Reject
device numbers higher than that to earlier catch possible errors.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
---
include/linux/drbd_limits.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h
index 9b76984..d3ec9cc 100644
--- a/include/linux/drbd_limits.h
+++ b/include/linux/drbd_limits.h
@@ -137,7 +137,7 @@
#define DRBD_AL_EXTENTS_SCALE '1'

#define DRBD_MINOR_NUMBER_MIN -1
-#define DRBD_MINOR_NUMBER_MAX (1<<30)
+#define DRBD_MINOR_NUMBER_MAX ((1 << 20) - 1)
#define DRBD_MINOR_NUMBER_DEF -1
#define DRBD_MINOR_NUMBER_SCALE '1'

--
1.7.4.1


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