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mm/damon/core: use time_before() for next_apply_sis

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damon_ctx->passed_sample_intervals and damos->next_apply_sis are unsigned
long, and compared via normal comparison operators.  It is unsafe from
overflow.  Use time_before(), which is safe from overflow when correctly
used, instead.

Link: https://lkml.kernel.org/r/20260307194915.203169-3-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2026-03-07 11:49:13 -08:00 committed by Andrew Morton
parent 7e6c650fdb
commit f05e253637
1 changed files with 3 additions and 3 deletions
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6
mm/damon/core.c
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@ -2097,7 +2097,7 @@ static void damon_do_apply_schemes(struct damon_ctx *c,
damon_for_each_scheme(s, c) {
struct damos_quota *quota = &s->quota;
if (c->passed_sample_intervals < s->next_apply_sis)
if (time_before(c->passed_sample_intervals, s->next_apply_sis))
continue;
if (!s->wmarks.activated)
@ -2455,7 +2455,7 @@ static void kdamond_apply_schemes(struct damon_ctx *c)
bool has_schemes_to_apply = false;
damon_for_each_scheme(s, c) {
if (c->passed_sample_intervals < s->next_apply_sis)
if (time_before(c->passed_sample_intervals, s->next_apply_sis))
continue;
if (!s->wmarks.activated)
@ -2479,7 +2479,7 @@ static void kdamond_apply_schemes(struct damon_ctx *c)
}
damon_for_each_scheme(s, c) {
if (c->passed_sample_intervals < s->next_apply_sis)
if (time_before(c->passed_sample_intervals, s->next_apply_sis))
continue;
damos_walk_complete(c, s);
damos_set_next_apply_sis(s, c);