[PATCH v3 0/3] ring-buffer: Making persistent ring buffer robust

[Masami Hiramatsu (Google)]

Hi,

Here is the 3rd version of improvement patches for making persistent
ring buffers robust to failures. This fixes some issues of persistent
ring buffer on real machines.
The previous version is here:

https://lore.kernel.org/all/177140965047.1537493.15501794841217306382.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxx/

In this version, I rebased the series on top of trace/fixes
branch (thus the first patch has been merged.)

I updated the description [1/3], used RB_MISSED_EVENTS flag to
indicate the corrupted page [3/3] and I found a new bug on
using rb_data_page::commit as index. So added a new fix [2/3].

Thank you,


---

Masami Hiramatsu (Google) (3):
      ring-buffer: Flush and stop persistent ring buffer on panic
      ring-buffer: Handle RB_MISSED_* flags on commit field correctly
      ring-buffer: Skip invalid sub-buffers when validating persistent ring buffer


 kernel/trace/ring_buffer.c |   72 +++++++++++++++++++++++++++++---------------
 1 file changed, 47 insertions(+), 25 deletions(-)

--
Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>