Commit 310d6c15e910 ("mm/damon/core: merge regions aggressively when max_nr_regions") causes a build warning and a build failure [1] on 5.15.y. Those are due to 1) unnecessarily strict type check from max(), and 2) use of not-yet-introduced damon_ctx->attrs field, respectively.
Fix the warning by backporting a minmax.h upstream commit that made the type check less strict for unnecessary case, and upstream commits that it depends on.
Note that all patches except the fourth one ("minmax: fix header inclusions") are clean cherry-picks of upstream commit. For the fourth one, minor conflict resolving was needed.
Also, the last patch, which is the backport of the DAMON fix, was cleanly cherry-picked, but added manual fix for the build failure.
[1] https://lore.kernel.org/2024071532-pebble-jailhouse-48b2@gregkh
Andy Shevchenko (1): minmax: fix header inclusions
Bart Van Assche (1): tracing: Define the is_signed_type() macro once
David Laight (3): minmax: allow min()/max()/clamp() if the arguments have the same signedness. minmax: allow comparisons of 'int' against 'unsigned char/short' minmax: relax check to allow comparison between unsigned arguments and signed constants
Jason A. Donenfeld (2): minmax: sanity check constant bounds when clamping minmax: clamp more efficiently by avoiding extra comparison
SeongJae Park (1): mm/damon/core: merge regions aggressively when max_nr_regions is unmet
include/linux/compiler.h | 6 +++ include/linux/minmax.h | 89 ++++++++++++++++++++++++++---------- include/linux/overflow.h | 1 - include/linux/trace_events.h | 2 - mm/damon/core.c | 23 ++++++++-- 5 files changed, 90 insertions(+), 31 deletions(-)
base-commit: 4d1b7f1bf3858ed48a98c004bda5fdff2cdf13c8