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From: "Ed L. Cashin" <ecashin@coraid.com>
To: linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
	"Ed L. Cashin" <ecashin@coraid.com>
Subject: [PATCH] aoe: document the behavior of /dev/etherd/err
Date: Wed, 26 Dec 2007 15:35:52 -0500	[thread overview]
Message-ID: <1198701352-14778-1-git-send-email-ecashin@coraid.com> (raw)
In-Reply-To: <20071221220040.5862b43b.akpm@linux-foundation.org>


Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
---
 drivers/block/aoe/aoechr.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c
index 2620073..871f284 100644
--- a/drivers/block/aoe/aoechr.c
+++ b/drivers/block/aoe/aoechr.c
@@ -33,6 +33,10 @@ struct ErrMsg {
 	char *msg;
 };
 
+/* A ring buffer of error messages, to be read through
+ * "/dev/etherd/err".  When no messages are present,
+ * readers will block waiting for messages to appear.
+ */
 static struct ErrMsg emsgs[NMSG];
 static int emsgs_head_idx, emsgs_tail_idx;
 static struct semaphore emsgs_sema;
-- 
1.5.3.4


  parent reply	other threads:[~2007-12-26 20:35 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-20 22:15 [PATCH 01/13] bring driver version number to 47 Ed L. Cashin
2007-12-20 22:15 ` [PATCH 02/13] handle multiple network paths to AoE device Ed L. Cashin
2007-12-20 22:15 ` [PATCH 03/13] mac_addr: avoid 64-bit arch compiler warnings Ed L. Cashin
2007-12-20 22:15 ` [PATCH 04/13] clean up udev configuration example Ed L. Cashin
2007-12-20 22:15 ` [PATCH 05/13] eliminate goto and improve readability Ed L. Cashin
2007-12-20 22:15 ` [PATCH 06/13] user can ask driver to forget previously detected devices Ed L. Cashin
2007-12-20 22:15 ` [PATCH 07/13] dynamically allocate a capped number of skbs when necessary Ed L. Cashin
2007-12-20 22:15 ` [PATCH 08/13] only install new AoE device once Ed L. Cashin
2007-12-20 22:15 ` [PATCH 09/13] remove race between use and initialization of locks Ed L. Cashin
2007-12-22  6:00   ` Andrew Morton
2007-12-26 19:28     ` Ed L. Cashin
2007-12-26 20:25     ` [PATCH] aoe: initialize locking structures before registering char devices Ed L. Cashin
2007-12-26 20:35     ` Ed L. Cashin [this message]
2007-12-20 22:15 ` [PATCH 10/13] add module parameter for users who need more outstanding I/O Ed L. Cashin
2007-12-20 22:15 ` [PATCH 11/13] the aoeminor doesn't need a long format Ed L. Cashin
2007-12-20 22:16 ` [PATCH 12/13] make error messages more specific Ed L. Cashin
2007-12-20 22:16 ` [PATCH 13/13] update copyright date Ed L. Cashin
2007-12-22  6:03   ` Andrew Morton

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