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-rw-r--r--mm/damon/core.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/mm/damon/core.c b/mm/damon/core.c
index 80d5937fe337..ceec75b88ef9 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -772,6 +772,7 @@ static void damos_apply_scheme(struct damon_ctx *c, struct damon_target *t,
unsigned long sz = damon_sz_region(r);
struct timespec64 begin, end;
unsigned long sz_applied = 0;
+ int err = 0;
if (c->ops.apply_scheme) {
if (quota->esz && quota->charged_sz + sz > quota->esz) {
@@ -782,7 +783,10 @@ static void damos_apply_scheme(struct damon_ctx *c, struct damon_target *t,
damon_split_region_at(t, r, sz);
}
ktime_get_coarse_ts64(&begin);
- sz_applied = c->ops.apply_scheme(c, t, r, s);
+ if (c->callback.before_damos_apply)
+ err = c->callback.before_damos_apply(c, t, r, s);
+ if (!err)
+ sz_applied = c->ops.apply_scheme(c, t, r, s);
ktime_get_coarse_ts64(&end);
quota->total_charged_ns += timespec64_to_ns(&end) -
timespec64_to_ns(&begin);