[PATCH 0/2] introduce DUMP_PREFIX_UNHASHED for hex dumps

From: Timur Tabi
Date: Sat Jan 16 2021 - 17:12:34 EST

First patch updates print_hex_dump() and related functions to
allow callers to print hex dumps with unhashed addresses. It
adds a new prefix type, so existing code is unchanged.

Second patch changes a page poising function to use the new
address type. This is just an example of a change. If it's
wrong, it doesn't need to be applied.

IMHO, hashed addresses make very little sense for hex dumps,
which print addresses in 16- or 32-byte increments. Typical
use-case is to correlate an addresses in between one of these
increments with some other address, but that can't be done
if the addresses are hashed. I expect most developers to
want to replace their usage of DUMP_PREFIX_ADDRESS with
DUMP_PREFIX_UNHASHED, now that they have the opportunity.

Timur Tabi (2):
[v2] lib/hexdump: introduce DUMP_PREFIX_UNHASHED for unhashed
mm/page_poison: use unhashed address in hexdump for check_poison_mem()

fs/seq_file.c | 3 +++
include/linux/printk.h | 8 +++++---
lib/hexdump.c | 9 +++++++--
lib/seq_buf.c | 9 +++++++--
mm/page_poison.c | 2 +-
5 files changed, 23 insertions(+), 8 deletions(-)