tree 186a96aa4cace7fe51ede64c8b4f426a5007f007
parent 7104f300c5a69b46dda00d898034dd05c9f21739
author Steven Rostedt <rostedt@goodmis.org> 1222874094 -0400
committer Ingo Molnar <mingo@elte.hu> 1223973548 +0200

ring_buffer: allocate buffer page pointer

The current method of overlaying the page frame as the buffer page pointer
can be very dangerous and limits our ability to do other things with
a page from the buffer, like send it off to disk.

This patch allocates the buffer_page instead of overlaying the page's
page frame. The use of the buffer_page has hardly changed due to this.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>