[merged mm-stable] samples-damon-mtier-replace-damon_add_region-with-damon_set_regions.patch removed from -mm tree

[merged mm-stable] samples-damon-mtier-replace-damon_add_region-with-damon_set_regions.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: samples/damon/mtier: replace damon_add_region() with damon_set_regions()
has been removed from the -mm tree.  Its filename was
     samples-damon-mtier-replace-damon_add_region-with-damon_set_regions.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: samples/damon/mtier: replace damon_add_region() with damon_set_regions()
Date: Fri, 22 May 2026 08:40:14 -0700

mtier DAMON sample module and DAMON virtual address operation set (vaddr)
unit tests are using damon_add_region() for setup of DAMON monitoring
target region boundaries setup.  But, damon_set_regions() is designed for
exactly the purpose.  All other DAMON API callers use the function for the
purpose.  Replace damon_add_region() usage in mtier sample module with
damon_set_regions(), for unifying the use case and reducing the
maintenance cost.

Link: https://lore.kernel.org/20260522154026.80546-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 samples/damon/mtier.c |   10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

--- a/samples/damon/mtier.c~samples-damon-mtier-replace-damon_add_region-with-damon_set_regions
+++ a/samples/damon/mtier.c
@@ -75,11 +75,11 @@ static struct damon_ctx *damon_sample_mt
 	struct damon_ctx *ctx;
 	struct damon_attrs attrs;
 	struct damon_target *target;
-	struct damon_region *region;
 	struct damos *scheme;
 	struct damos_quota_goal *quota_goal;
 	struct damos_filter *filter;
 	struct region_range addr;
+	struct damon_addr_range range;
 	int ret;
 
 	ctx = damon_new_ctx();
@@ -120,10 +120,12 @@ static struct damon_ctx *damon_sample_mt
 		addr.end = promote ? node1_end_addr : node0_end_addr;
 	}
 
-	region = damon_new_region(addr.start, addr.end);
-	if (!region)
+	range.start = addr.start;
+	range.end = addr.end;
+
+	ret = damon_set_regions(target, &range, 1, DAMON_MIN_REGION_SZ);
+	if (ret)
 		goto free_out;
-	damon_add_region(region, target);
 
 	scheme = damon_new_scheme(
 			/* access pattern */
_

Patches currently in -mm which might be from sj@kernel.org are

mm-damon-reclaim-handle-ctx-allocation-failure.patch
mm-damonn-lru_sort-handle-ctx-allocation-failure.patch
maintainers-add-testing-abi-documents-for-mm.patch