tree d85e0a7b2b587b41afd1c764e7c25b3fa2962613
parent 184210154b9aa570099183f6c062ac4eb11190b7
author Steven Rostedt <srostedt@redhat.com> 1260505252 -0500
committer Steven Rostedt <rostedt@goodmis.org> 1260505252 -0500

ring-buffer: Move resize integrity check under reader lock

While using an application that does splice on the ftrace ring
buffer at start up, I triggered an integrity check failure.

Looking into this, I discovered that resizing the buffer performs
an integrity check after the buffer is resized. This check unfortunately
is preformed after it releases the reader lock. If a reader is
reading the buffer it may cause the integrity check to trigger a
false failure.

This patch simply moves the integrity checker under the protection
of the ring buffer reader lock.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>