From mboxrd@z Thu Jan  1 00:00:00 1970
From: mindentropy@gmail.com (mindentropy)
Date: Sun, 18 Sep 2011 23:32:30 +0530
Subject: Regarding mmap synchronization.
Message-ID: <201109182332.30556.mindentropy@gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Hi,

  I have mmaped a circular queue buffer created in the kernel.  Now I want to 
mmap the read and write pointers in the queue but I am not sure how to 
synchronize the access of the pointers between the kernel and userspace(while 
checking sizes for overflow and underflow). How should I go about doing this?

Thanks.