Adding upstream version 6.7.7.upstream/6.7.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 13 insertions, 9 deletions

diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index cf8a9fc5c9..a4d1f63c5b 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c
@@ -558,23 +558,27 @@ static bool damon_va_young(struct mm_struct *mm, unsigned long addr,
  * r	the region to be checked
  */
 static void __damon_va_check_access(struct mm_struct *mm,
-				struct damon_region *r, bool same_target)
+				struct damon_region *r, bool same_target,
+				struct damon_attrs *attrs)
 {
 	static unsigned long last_addr;
 	static unsigned long last_folio_sz = PAGE_SIZE;
 	static bool last_accessed;
 
+	if (!mm) {
+		damon_update_region_access_rate(r, false, attrs);
+		return;
+	}
+
 	/* If the region is in the last checked page, reuse the result */
 	if (same_target && (ALIGN_DOWN(last_addr, last_folio_sz) ==
 				ALIGN_DOWN(r->sampling_addr, last_folio_sz))) {
-		if (last_accessed)
-			r->nr_accesses++;
+		damon_update_region_access_rate(r, last_accessed, attrs);
 		return;
 	}
 
 	last_accessed = damon_va_young(mm, r->sampling_addr, &last_folio_sz);
-	if (last_accessed)
-		r->nr_accesses++;
+	damon_update_region_access_rate(r, last_accessed, attrs);
 
 	last_addr = r->sampling_addr;
 }
@@ -589,15 +593,15 @@ static unsigned int damon_va_check_accesses(struct damon_ctx *ctx)
 
 	damon_for_each_target(t, ctx) {
 		mm = damon_get_mm(t);
-		if (!mm)
-			continue;
 		same_target = false;
 		damon_for_each_region(r, t) {
-			__damon_va_check_access(mm, r, same_target);
+			__damon_va_check_access(mm, r, same_target,
+					&ctx->attrs);
 			max_nr_accesses = max(r->nr_accesses, max_nr_accesses);
 			same_target = true;
 		}
-		mmput(mm);
+		if (mm)
+			mmput(mm);
 	}
 
 	return max_nr_accesses;