bcachefs: clean up duplicate min_heap_callbacks declarations

Refactor the bcachefs code to remove multiple redundant declarations of
min_heap_callbacks, ensuring that each unique declaration appears only
once.

Link: https://lore.kernel.org/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kuan-Wei Chiu <[email protected]>
Suggested-by: Peter Zijlstra <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Ching-Chun (Jim) Huang <[email protected]>
Cc: Coly Li <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Kent Overstreet <[email protected]>
Cc: "Liang, Kan" <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Matthew Sakai <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Namhyung Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: visitorckw

fs/bcachefs/clock.c

@@ -22,13 +22,13 @@ static inline void io_timer_swp(void *l, void *r, void __always_unused *args)
 	swap(*_l, *_r);
 }
 
+static const struct min_heap_callbacks callbacks = {
+	.less = io_timer_cmp,
+	.swp = io_timer_swp,
+};
+
 void bch2_io_timer_add(struct io_clock *clock, struct io_timer *timer)
 {
-	const struct min_heap_callbacks callbacks = {
-		.less = io_timer_cmp,
-		.swp = io_timer_swp,
-	};
-
 	spin_lock(&clock->timer_lock);
 
 	if (time_after_eq64((u64) atomic64_read(&clock->now), timer->expire)) {
@@ -48,11 +48,6 @@ void bch2_io_timer_add(struct io_clock *clock, struct io_timer *timer)
 
 void bch2_io_timer_del(struct io_clock *clock, struct io_timer *timer)
 {
-	const struct min_heap_callbacks callbacks = {
-		.less = io_timer_cmp,
-		.swp = io_timer_swp,
-	};
-
 	spin_lock(&clock->timer_lock);
 
 	for (size_t i = 0; i < clock->timers.nr; i++)
@@ -142,10 +137,6 @@ void bch2_kthread_io_clock_wait(struct io_clock *clock,
 static struct io_timer *get_expired_timer(struct io_clock *clock, u64 now)
 {
 	struct io_timer *ret = NULL;
-	const struct min_heap_callbacks callbacks = {
-		.less = io_timer_cmp,
-		.swp = io_timer_swp,
-	};
 
 	if (clock->timers.nr &&
 	    time_after_eq64(now, clock->timers.data[0]->expire)) {

fs/bcachefs/ec.c

@@ -1057,6 +1057,11 @@ static inline void ec_stripes_heap_swap(void *l, void *r, void *h)
 	ec_stripes_heap_set_backpointer(_h, j);
 }
 
+static const struct min_heap_callbacks callbacks = {
+	.less = ec_stripes_heap_cmp,
+	.swp = ec_stripes_heap_swap,
+};
+
 static void heap_verify_backpointer(struct bch_fs *c, size_t idx)
 {
 	ec_stripes_heap *h = &c->ec_stripes_heap;
@@ -1069,11 +1074,6 @@ static void heap_verify_backpointer(struct bch_fs *c, size_t idx)
 void bch2_stripes_heap_del(struct bch_fs *c,
 			   struct stripe *m, size_t idx)
 {
-	const struct min_heap_callbacks callbacks = {
-		.less = ec_stripes_heap_cmp,
-		.swp = ec_stripes_heap_swap,
-	};
-
 	mutex_lock(&c->ec_stripes_heap_lock);
 	heap_verify_backpointer(c, idx);
 
@@ -1084,11 +1084,6 @@ void bch2_stripes_heap_del(struct bch_fs *c,
 void bch2_stripes_heap_insert(struct bch_fs *c,
 			      struct stripe *m, size_t idx)
 {
-	const struct min_heap_callbacks callbacks = {
-		.less = ec_stripes_heap_cmp,
-		.swp = ec_stripes_heap_swap,
-	};
-
 	mutex_lock(&c->ec_stripes_heap_lock);
 	BUG_ON(min_heap_full(&c->ec_stripes_heap));
 
@@ -1107,10 +1102,6 @@ void bch2_stripes_heap_insert(struct bch_fs *c,
 void bch2_stripes_heap_update(struct bch_fs *c,
 			      struct stripe *m, size_t idx)
 {
-	const struct min_heap_callbacks callbacks = {
-		.less = ec_stripes_heap_cmp,
-		.swp = ec_stripes_heap_swap,
-	};
 	ec_stripes_heap *h = &c->ec_stripes_heap;
 	bool do_deletes;
 	size_t i;