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bcachefs: add functionality for heaps to update backpointers

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2018-10-21 16:32:51 -04:00 committed by Kent Overstreet
parent 2252aa271c
commit 198d67006b
6 changed files with 59 additions and 42 deletions
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16
fs/bcachefs/alloc_background.c
View File

@ -583,7 +583,8 @@ static void find_reclaimable_buckets_lru(struct bch_fs *c, struct bch_dev *ca)
e.nr++;
} else {
if (e.nr)
heap_add_or_replace(&ca->alloc_heap, e, -bucket_alloc_cmp);
heap_add_or_replace(&ca->alloc_heap, e,
-bucket_alloc_cmp, NULL);
e = (struct alloc_heap_entry) {
.bucket = b,
@ -596,14 +597,15 @@ static void find_reclaimable_buckets_lru(struct bch_fs *c, struct bch_dev *ca)
}
if (e.nr)
heap_add_or_replace(&ca->alloc_heap, e, -bucket_alloc_cmp);
heap_add_or_replace(&ca->alloc_heap, e,
-bucket_alloc_cmp, NULL);
for (i = 0; i < ca->alloc_heap.used; i++)
nr += ca->alloc_heap.data[i].nr;
while (nr - ca->alloc_heap.data[0].nr >= ALLOC_SCAN_BATCH(ca)) {
nr -= ca->alloc_heap.data[0].nr;
heap_pop(&ca->alloc_heap, e, -bucket_alloc_cmp);
heap_pop(&ca->alloc_heap, e, -bucket_alloc_cmp, NULL);
}
up_read(&ca->bucket_lock);
@ -633,7 +635,7 @@ static void find_reclaimable_buckets_fifo(struct bch_fs *c, struct bch_dev *ca)
if (bch2_can_invalidate_bucket(ca, b, m)) {
struct alloc_heap_entry e = { .bucket = b, .nr = 1, };
heap_add(&ca->alloc_heap, e, bucket_alloc_cmp);
heap_add(&ca->alloc_heap, e, bucket_alloc_cmp, NULL);
if (heap_full(&ca->alloc_heap))
break;
}
@ -660,7 +662,7 @@ static void find_reclaimable_buckets_random(struct bch_fs *c, struct bch_dev *ca
if (bch2_can_invalidate_bucket(ca, b, m)) {
struct alloc_heap_entry e = { .bucket = b, .nr = 1, };
heap_add(&ca->alloc_heap, e, bucket_alloc_cmp);
heap_add(&ca->alloc_heap, e, bucket_alloc_cmp, NULL);
if (heap_full(&ca->alloc_heap))
break;
}
@ -698,7 +700,7 @@ static size_t find_reclaimable_buckets(struct bch_fs *c, struct bch_dev *ca)
break;
}
heap_resort(&ca->alloc_heap, bucket_alloc_cmp);
heap_resort(&ca->alloc_heap, bucket_alloc_cmp, NULL);
for (i = 0; i < ca->alloc_heap.used; i++)
nr += ca->alloc_heap.data[i].nr;
@ -719,7 +721,7 @@ static inline long next_alloc_bucket(struct bch_dev *ca)
return b;
}
heap_pop(&ca->alloc_heap, e, bucket_alloc_cmp);
heap_pop(&ca->alloc_heap, e, bucket_alloc_cmp, NULL);
}
return -1;

6
fs/bcachefs/btree_io.c
View File

@ -35,7 +35,7 @@ void bch2_btree_node_iter_large_push(struct btree_node_iter_large *iter,
__btree_node_key_to_offset(b, end)
});
__heap_add(iter, n, btree_node_iter_cmp_heap);
__heap_add(iter, n, btree_node_iter_cmp_heap, NULL);
}
}
@ -48,9 +48,9 @@ void bch2_btree_node_iter_large_advance(struct btree_node_iter_large *iter,
EBUG_ON(iter->data->k > iter->data->end);
if (iter->data->k == iter->data->end)
heap_del(iter, 0, btree_node_iter_cmp_heap);
heap_del(iter, 0, btree_node_iter_cmp_heap, NULL);
else
heap_sift_down(iter, 0, btree_node_iter_cmp_heap);
heap_sift_down(iter, 0, btree_node_iter_cmp_heap, NULL);
}
static void verify_no_dups(struct btree *b,

6
fs/bcachefs/clock.c
View File

@ -22,7 +22,7 @@ void bch2_io_timer_add(struct io_clock *clock, struct io_timer *timer)
if (clock->timers.data[i] == timer)
goto out;
BUG_ON(!heap_add(&clock->timers, timer, io_timer_cmp));
BUG_ON(!heap_add(&clock->timers, timer, io_timer_cmp, NULL));
out:
spin_unlock(&clock->timer_lock);
}
@ -35,7 +35,7 @@ void bch2_io_timer_del(struct io_clock *clock, struct io_timer *timer)
for (i = 0; i < clock->timers.used; i++)
if (clock->timers.data[i] == timer) {
heap_del(&clock->timers, i, io_timer_cmp);
heap_del(&clock->timers, i, io_timer_cmp, NULL);
break;
}
@ -128,7 +128,7 @@ static struct io_timer *get_expired_timer(struct io_clock *clock,
if (clock->timers.used &&
time_after_eq(now, clock->timers.data[0]->expire))
heap_pop(&clock->timers, ret, io_timer_cmp);
heap_pop(&clock->timers, ret, io_timer_cmp, NULL);
spin_unlock(&clock->timer_lock);

10
fs/bcachefs/extents.c
View File

@ -88,7 +88,7 @@ struct btree_nr_keys bch2_key_sort_fix_overlapping(struct bset *dst,
memset(&nr, 0, sizeof(nr));
heap_resort(iter, key_sort_cmp);
heap_resort(iter, key_sort_cmp, NULL);
while (!bch2_btree_node_iter_large_end(iter)) {
if (!should_drop_next_key(iter, b)) {
@ -101,7 +101,7 @@ struct btree_nr_keys bch2_key_sort_fix_overlapping(struct bset *dst,
}
sort_key_next(iter, b, iter->data);
heap_sift_down(iter, 0, key_sort_cmp);
heap_sift_down(iter, 0, key_sort_cmp, NULL);
}
dst->u64s = cpu_to_le16((u64 *) out - dst->_data);
@ -841,7 +841,7 @@ static bool extent_i_save(struct btree *b, struct bkey_packed *dst,
static inline void extent_sort_sift(struct btree_node_iter_large *iter,
struct btree *b, size_t i)
{
heap_sift_down(iter, i, extent_sort_cmp);
heap_sift_down(iter, i, extent_sort_cmp, NULL);
}
static inline void extent_sort_next(struct btree_node_iter_large *iter,
@ -849,7 +849,7 @@ static inline void extent_sort_next(struct btree_node_iter_large *iter,
struct btree_node_iter_set *i)
{
sort_key_next(iter, b, i);
heap_sift_down(iter, i - iter->data, extent_sort_cmp);
heap_sift_down(iter, i - iter->data, extent_sort_cmp, NULL);
}
static void extent_sort_append(struct bch_fs *c,
@ -897,7 +897,7 @@ struct btree_nr_keys bch2_extent_sort_fix_overlapping(struct bch_fs *c,
memset(&nr, 0, sizeof(nr));
heap_resort(iter, extent_sort_cmp);
heap_resort(iter, extent_sort_cmp, NULL);
while (!bch2_btree_node_iter_large_end(iter)) {
lk = __btree_node_offset_to_key(b, _l->k);

4
fs/bcachefs/movinggc.c
View File

@ -161,7 +161,7 @@ static void bch2_copygc(struct bch_fs *c, struct bch_dev *ca)
.sectors = bucket_sectors_used(m),
.offset = bucket_to_sector(ca, b),
};
heap_add_or_replace(h, e, -sectors_used_cmp);
heap_add_or_replace(h, e, -sectors_used_cmp, NULL);
}
up_read(&ca->bucket_lock);
up_read(&c->gc_lock);
@ -170,7 +170,7 @@ static void bch2_copygc(struct bch_fs *c, struct bch_dev *ca)
sectors_to_move += i->sectors;
while (sectors_to_move > COPYGC_SECTORS_PER_ITER(ca)) {
BUG_ON(!heap_pop(h, e, -sectors_used_cmp));
BUG_ON(!heap_pop(h, e, -sectors_used_cmp, NULL));
sectors_to_move -= e.sectors;
}

59
fs/bcachefs/util.h
View File

@ -127,7 +127,19 @@ do { \
(heap)->data = NULL; \
} while (0)
#define heap_swap(h, i, j) swap((h)->data[i], (h)->data[j])
#define heap_set_backpointer(h, i, _fn) \
do { \
void (*fn)(typeof(h), size_t) = _fn; \
if (fn) \
fn(h, i); \
} while (0)
#define heap_swap(h, i, j, set_backpointer) \
do { \
swap((h)->data[i], (h)->data[j]); \
heap_set_backpointer(h, i, set_backpointer); \
heap_set_backpointer(h, j, set_backpointer); \
} while (0)
#define heap_peek(h) \
({ \
@ -137,7 +149,7 @@ do { \
#define heap_full(h) ((h)->used == (h)->size)
#define heap_sift_down(h, i, cmp) \
#define heap_sift_down(h, i, cmp, set_backpointer) \
do { \
size_t _c, _j = i; \
\
@ -149,72 +161,75 @@ do { \
\
if (cmp(h, (h)->data[_c], (h)->data[_j]) >= 0) \
break; \
heap_swap(h, _c, _j); \
heap_swap(h, _c, _j, set_backpointer); \
} \
} while (0)
#define heap_sift_up(h, i, cmp) \
#define heap_sift_up(h, i, cmp, set_backpointer) \
do { \
while (i) { \
size_t p = (i - 1) / 2; \
if (cmp(h, (h)->data[i], (h)->data[p]) >= 0) \
break; \
heap_swap(h, i, p); \
heap_swap(h, i, p, set_backpointer); \
i = p; \
} \
} while (0)
#define __heap_add(h, d, cmp) \
do { \
#define __heap_add(h, d, cmp, set_backpointer) \
({ \
size_t _i = (h)->used++; \
(h)->data[_i] = d; \
heap_set_backpointer(h, _i, set_backpointer); \
\
heap_sift_up(h, _i, cmp); \
} while (0)
heap_sift_up(h, _i, cmp, set_backpointer); \
_i; \
})
#define heap_add(h, d, cmp) \
#define heap_add(h, d, cmp, set_backpointer) \
({ \
bool _r = !heap_full(h); \
if (_r) \
__heap_add(h, d, cmp); \
__heap_add(h, d, cmp, set_backpointer); \
_r; \
})
#define heap_add_or_replace(h, new, cmp) \
#define heap_add_or_replace(h, new, cmp, set_backpointer) \
do { \
if (!heap_add(h, new, cmp) && \
if (!heap_add(h, new, cmp, set_backpointer) && \
cmp(h, new, heap_peek(h)) >= 0) { \
(h)->data[0] = new; \
heap_sift_down(h, 0, cmp); \
heap_set_backpointer(h, 0, set_backpointer); \
heap_sift_down(h, 0, cmp, set_backpointer); \
} \
} while (0)
#define heap_del(h, i, cmp) \
#define heap_del(h, i, cmp, set_backpointer) \
do { \
size_t _i = (i); \
\
BUG_ON(_i >= (h)->used); \
(h)->used--; \
heap_swap(h, _i, (h)->used); \
heap_sift_up(h, _i, cmp); \
heap_sift_down(h, _i, cmp); \
heap_swap(h, _i, (h)->used, set_backpointer); \
heap_sift_up(h, _i, cmp, set_backpointer); \
heap_sift_down(h, _i, cmp, set_backpointer); \
} while (0)
#define heap_pop(h, d, cmp) \
#define heap_pop(h, d, cmp, set_backpointer) \
({ \
bool _r = (h)->used; \
if (_r) { \
(d) = (h)->data[0]; \
heap_del(h, 0, cmp); \
heap_del(h, 0, cmp, set_backpointer); \
} \
_r; \
})
#define heap_resort(heap, cmp) \
#define heap_resort(heap, cmp, set_backpointer) \
do { \
ssize_t _i; \
for (_i = (ssize_t) (heap)->used / 2 - 1; _i >= 0; --_i) \
heap_sift_down(heap, _i, cmp); \
heap_sift_down(heap, _i, cmp, set_backpointer); \
} while (0)
#define ANYSINT_MAX(t) \