tree 0d75a50b12cd1c8e39119419ed7c65195b518a16
parent 33735a94afdfb39c550b952a40f77c60afdddfa5
author Anton Vorontsov <anton.vorontsov@linaro.org> 1338037669 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1339631559 -0700

pstore/ram: Should update old dmesg buffer before reading

Without the update, we'll only see the new dmesg buffer after the
reboot, but previously we could see it right away. Making an oops
visible in pstore filesystem before reboot is a somewhat dubious
feature, but removing it wasn't an intentional change, so let's
restore it.

For this we have to make persistent_ram_save_old() safe for calling
multiple times, and also extern it.

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>