ring-buffer: move some metadata into buffer page
Impact: get ready for splice changes This patch moves the commit and timestamp into the beginning of each data page of the buffer. This change will allow the page to be moved to another location (disk, network, etc) and still have information in the page to be able to read it. Signed-off-by: NSteven Rostedt <srostedt@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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