From: Philipp Reisner <philipp.reisner@linbit.com>
To: linux-kernel@vger.kernel.org, Jens Axboe <axboe@kernel.dk>
Cc: drbd-dev@lists.linbit.com
Subject: [PATCH 05/11] drbd: Fix the maximum accepted minor device number
Date: Fri, 14 Oct 2011 23:57:46 +0200 [thread overview]
Message-ID: <1318629472-11110-6-git-send-email-philipp.reisner@linbit.com> (raw)
In-Reply-To: <1318629472-11110-1-git-send-email-philipp.reisner@linbit.com>
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
next prev parent reply other threads:[~2011-10-14 21:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-14 21:57 [RFC 00/11] drbd: part 20 of adding multiple volume support to drbd Philipp Reisner
2011-10-14 21:57 ` [PATCH 01/11] drbd: Correctly handle resources without volumes Philipp Reisner
2011-10-14 21:57 ` [PATCH 02/11] drbd: report net config even for resources without a single volume Philipp Reisner
2011-10-14 21:57 ` [PATCH 03/11] drbd: Changed some defaults Philipp Reisner
2011-10-14 21:57 ` [PATCH 04/11] drbd: Define scale factors in a single place Philipp Reisner
2011-10-14 21:57 ` Philipp Reisner [this message]
2011-10-14 21:57 ` [PATCH 06/11] drbd: Allow to create devices with a minor number > minor_count Philipp Reisner
2011-10-14 21:57 ` [PATCH 07/11] drbd: Print memory address in hex instead of decimal in error message Philipp Reisner
2011-10-14 21:57 ` [PATCH 08/11] drbd: receive_protocol(): Give variables more easily searchable names Philipp Reisner
2011-10-14 21:57 ` [PATCH 09/11] drbd: receive_protocol(): Make the program flow less confusing Philipp Reisner
2011-10-14 21:57 ` [PATCH 10/11] drbd: Be consistent in reporting incompatibilities in P_PROTOCOL settings Philipp Reisner
2011-10-14 21:57 ` [PATCH 11/11] drbd: receive_protocol(): We cannot change our own data-integrity-alg setting here Philipp Reisner
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