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| author |   Kent Overstreet <kent.overstreet@linux.dev> | 2024-12-21 02:55:03 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2025-01-09 23:38:41 -0500 |
| commit | 6adc5af50a5401a19c1f23b3ed2ebfd3a0d8cdc6 (patch) | |
| tree | 68d956bf665b4127378b4c4cac5cebfc5bd6ec1d | |
| parent | bcachefs: fix bch2_btree_key_cache_drop() (diff) | |
| download | wireguard-linux-6adc5af50a5401a19c1f23b3ed2ebfd3a0d8cdc6.tar.xz wireguard-linux-6adc5af50a5401a19c1f23b3ed2ebfd3a0d8cdc6.zip | |
bcachefs: btree_path_very_locks(): verify lock seq
If the btree_path's lock seq is wrong, the next bch2_trans_relock()
operation is guaranteed to fail and we take an unnecessary transaction
restart.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | fs/bcachefs/btree_locking.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/bcachefs/btree_locking.c b/fs/bcachefs/btree_locking.c index d343df9f0ad2..b339c209345a 100644 --- a/fs/bcachefs/btree_locking.c +++ b/fs/bcachefs/btree_locking.c @@ -856,6 +856,9 @@ void bch2_btree_path_verify_locks(struct btree_path *path) (want == BTREE_NODE_UNLOCKED || have != BTREE_NODE_WRITE_LOCKED) && want != have); + + BUG_ON(btree_node_locked(path, l) && + path->l[l].lock_seq != six_lock_seq(&path->l[l].b->c.lock)); } } |