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bcachefs: Bring back BTREE_ITER_CACHED_NOFILL

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2022-12-20 11:26:57 -05:00
parent dcced06942
commit 087e53c255
3 changed files with 6 additions and 4 deletions
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6
fs/bcachefs/btree_iter.c
View File

@@ -1581,7 +1581,8 @@ struct bkey_s_c bch2_btree_path_peek_slot(struct btree_path *path, struct bkey *
EBUG_ON(ck &&
(path->btree_id != ck->key.btree_id ||
!bkey_eq(path->pos, ck->key.pos)));
EBUG_ON(!ck || !ck->valid);
if (!ck || !ck->valid)
return bkey_s_c_null;
*u = ck->k->k;
k = bkey_i_to_s_c(ck->k);
@@ -1860,7 +1861,8 @@ struct bkey_s_c btree_trans_peek_key_cache(struct btree_iter *iter, struct bpos
if (!iter->key_cache_path)
iter->key_cache_path = bch2_path_get(trans, iter->btree_id, pos,
iter->flags & BTREE_ITER_INTENT, 0,
iter->flags|BTREE_ITER_CACHED);
iter->flags|BTREE_ITER_CACHED|
BTREE_ITER_CACHED_NOFILL);
iter->key_cache_path = bch2_btree_path_set_pos(trans, iter->key_cache_path, pos,
iter->flags & BTREE_ITER_INTENT);

3
fs/bcachefs/btree_key_cache.c
View File

@@ -487,7 +487,7 @@ bch2_btree_path_traverse_cached_slowpath(struct btree_trans *trans, struct btree
path->l[0].lock_seq = ck->c.lock.state.seq;
path->l[0].b = (void *) ck;
fill:
if (!ck->valid) {
if (!ck->valid && !(flags & BTREE_ITER_CACHED_NOFILL)) {
/*
* Using the underscore version because we haven't set
* path->uptodate yet:
@@ -508,7 +508,6 @@ bch2_btree_path_traverse_cached_slowpath(struct btree_trans *trans, struct btree
set_bit(BKEY_CACHED_ACCESSED, &ck->flags);
path->uptodate = BTREE_ITER_UPTODATE;
BUG_ON(!ck->valid);
BUG_ON(btree_node_locked_type(path, 0) != btree_lock_want(path, 0));
return ret;

1
fs/bcachefs/btree_types.h
View File

@@ -207,6 +207,7 @@ struct btree_node_iter {
#define BTREE_ITER_ALL_SNAPSHOTS (1 << 11)
#define BTREE_ITER_FILTER_SNAPSHOTS (1 << 12)
#define BTREE_ITER_NOPRESERVE (1 << 13)
#define BTREE_ITER_CACHED_NOFILL (1 << 14)
enum btree_path_uptodate {
BTREE_ITER_UPTODATE = 0,