This series addresses multiple issues discovered with the dynamic ring buffer resizing.
Changelog: v2: - Prevent resizing of the persistent ring buffer - Add missing bpage::order init - Rework subbuf_size/subbuf_order (Sashiko) - Remove ring_buffer_per_cpu::mapped - Dynamically calculate trace_buffer::max_data_size v1 (https://lore.kernel.org/all/[email protected]/ Vincent Donnefort (6): ring-buffer: Prevent resizing of persistent ring buffer ring-buffer: Prevent subbuf order change when resizing is disabled ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer() ring-buffer: Fix subbuf resize concurrency ring-buffer: Dynamically calculate max_data_size ring-buffer: Remove ring_buffer_per_cpu::mapped kernel/trace/ring_buffer.c | 216 ++++++++++++++++++++----------------- 1 file changed, 117 insertions(+), 99 deletions(-) base-commit: 075b74841bd0065a3bda3440873c747938e69b68 -- 2.55.0.654.g21b8a5bc05-goog
