mm/damon: rename min_sz_region of damon_ctx to min_region_sz

mm/damon: rename min_sz_region of damon_ctx to min_region_sz

[ Upstream commit cc1db8dff8e751ec3ab352483de366b7f23aefe2 ]

'min_sz_region' field of 'struct damon_ctx' represents the minimum size of
each DAMON region for the context.  'struct damos_access_pattern' has a
field of the same name.  It confuses readers and makes 'grep' less optimal
for them.  Rename it to 'min_region_sz'.

Link: https://lkml.kernel.org/r/20260117175256.82826-9-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Stable-dep-of: c80f46ac228b ("mm/damon/core: disallow non-power of two min_region_sz")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>