mm/page_counter: remove an incorrect call to propagate_protected_usage()

propagate_protected_usage() is called to propagate the usage change in the page_counter structure. But there is a call to this function from page_counter_try_charge() when there is actually no usage change. Hence this call should be removed. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Donghai Qiao <[email protected]> Reviewed-by: Roman Gushchin <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Johannes Weiner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
torvalds · Jan 15, 2022 · 46a5337 · 46a5337
1 parent 17c1736
commit 46a5337
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/mm/page_counter.c b/mm/page_counter.c
@@ -120,7 +120,6 @@ bool page_counter_try_charge(struct page_counter *counter,
 		new = atomic_long_add_return(nr_pages, &c->usage);
 		if (new > c->max) {
 			atomic_long_sub(nr_pages, &c->usage);
-			propagate_protected_usage(c, new);
 			/*
 			 * This is racy, but we can live with some
 			 * inaccuracy in the failcnt which is only used