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mm/damon/core: check apply interval in damon_do_apply_schemes()

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commit e9e3db6996 upstream.

kdamond_apply_schemes() checks apply intervals of schemes and avoid
further applying any schemes if no scheme passed its apply interval.
However, the following schemes applying function, damon_do_apply_schemes()
iterates all schemes without the apply interval check.  As a result, the
shortest apply interval is applied to all schemes.  Fix the problem by
checking the apply interval in damon_do_apply_schemes().

Link: https://lkml.kernel.org/r/20240205201306.88562-1-sj@kernel.org
Fixes: 42f994b714 ("mm/damon/core: implement scheme-specific apply interval")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>	[6.7.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
SeongJae Park 2024-02-05 12:13:06 -08:00 committed by Greg Kroah-Hartman
parent a580dce211
commit d6ee839eb4
1 changed files with 11 additions and 4 deletions
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15
mm/damon/core.c
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@ -1026,6 +1026,9 @@ 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)
continue;
if (!s->wmarks.activated)
continue;
@ -1126,10 +1129,6 @@ static void kdamond_apply_schemes(struct damon_ctx *c)
if (c->passed_sample_intervals != s->next_apply_sis)
continue;
s->next_apply_sis +=
(s->apply_interval_us ? s->apply_interval_us :
c->attrs.aggr_interval) / sample_interval;
if (!s->wmarks.activated)
continue;
@ -1145,6 +1144,14 @@ static void kdamond_apply_schemes(struct damon_ctx *c)
damon_for_each_region_safe(r, next_r, t)
damon_do_apply_schemes(c, t, r);
}
damon_for_each_scheme(s, c) {
if (c->passed_sample_intervals != s->next_apply_sis)
continue;
s->next_apply_sis +=
(s->apply_interval_us ? s->apply_interval_us :
c->attrs.aggr_interval) / sample_interval;
}
}
/*