[RFC PATCH 0/5] mm/damon: support addr_unit on default monitoring targets for modules

[SeongJae Park]

DAMON_RECLAIM and DAMON_LRU_SORT support 'addr_unit' parameters only
when the monitoring target address range is explicitly set.  This was
intentional for making the initial 'addr_unit' support change small.
Now 'addr_unit' support is being quite stabilized.  Having the corner
case of the support is only making the code inconsistent with implicit
rules, that makes it easy to confuse [1] readers.  After all, there is
no real reason to keep 'addr_unit' support incomplete.  Add the support
for the case to improve the readability and more completely support
'addr_unit'.

This series is constructed with five patches.  The first one (patch 1)
fixes a small bug that mistakenly assigns inclusive end address to open
end address, which was found from this work.  The second and third ones
(patches 2 and 3) extend the modules default monitoring target setting
functions in the core layer one by one, to support the 'addr_unit' while
making no visible changes.  The final two patches (patches 4 and 5)
update DAMON_RECLAIM and DAMON_LRU_SORT to support 'addr_unit' for the
default monitoring target address ranges, by passing the user input to
the core functions.

[1] https://lore.kernel.org/20260131015643.79158-1-sj@xxxxxxxxxx

SeongJae Park (5):
  mm/damon/core: fix wrong end address assignment on walk_system_ram()
  mm/damon/core: support addr_unit on damon_find_biggest_system_ram()
  mm/damon/core: receive addr_unit on
    damon_set_region_biggest_system_ram_default()
  mm/damon/reclaim: respect addr_unit on default monitoring region setup
  mm/damon/lru_sort: respect addr_unit on default monitoring region
    setup

 include/linux/damon.h |  1 +
 mm/damon/core.c       | 36 +++++++++++++++++++++++++-----------
 mm/damon/lru_sort.c   |  7 +------
 mm/damon/reclaim.c    |  7 +------
 mm/damon/stat.c       |  2 +-
 5 files changed, 29 insertions(+), 24 deletions(-)


base-commit: c33b07ff858e4125f60a2b9e2a49f276b0d7e75a
-- 
2.47.3