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path: root/fs/bcachefs/btree_update_interior.c
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Diffstat (limited to 'fs/bcachefs/btree_update_interior.c')
-rw-r--r--fs/bcachefs/btree_update_interior.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/bcachefs/btree_update_interior.c b/fs/bcachefs/btree_update_interior.c
index 76897cf15946..65ca54c5b0ff 100644
--- a/fs/bcachefs/btree_update_interior.c
+++ b/fs/bcachefs/btree_update_interior.c
@@ -336,6 +336,20 @@ static struct btree *__bch2_btree_node_alloc(struct btree_trans *trans,
BUG_ON(b->ob.nr);
mutex_lock(&c->btree_reserve_cache_lock);
+ if (unlikely(c->open_buckets_nr_free <= bch2_open_buckets_reserved(watermark))) {
+ guard(spinlock)(&c->freelist_lock);
+ if (c->open_buckets_nr_free <= bch2_open_buckets_reserved(watermark)) {
+ if (cl)
+ closure_wait(&c->open_buckets_wait, cl);
+
+ ret = cl
+ ? bch_err_throw(c, bucket_alloc_blocked)
+ : bch_err_throw(c, open_buckets_empty);
+ mutex_unlock(&c->btree_reserve_cache_lock);
+ goto err;
+ }
+ }
+
if (c->btree_reserve_cache_nr > nr_reserve) {
for (struct btree_alloc *a = c->btree_reserve_cache;
a < c->btree_reserve_cache + c->btree_reserve_cache_nr;) {