---
ext2fs/journal.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/ext2fs/journal.c b/ext2fs/journal.c
index b05855b00..91b8e64ff 100644
--- a/ext2fs/journal.c
+++ b/ext2fs/journal.c
@@ -148,6 +148,13 @@ __thread int thread_is_checkpointing = 0;
__thread block_t deferred_blocks[MAX_DEFERRED_BLOCKS];
__thread int deferred_count = 0;
+/* Temporary storage for blocks rushed by the Mach VM pager.
+ * Because we cannot block or delay the pager when it needs to flush a page
+ * belonging to an active (RUNNING/COMMITTING) transaction, this cache
+ * absorbs the write. This prevents a permanent deadlock while preserving
+ * Write-Ahead Log (WAL) ordering.
+ * The payloads are flushed to disk as soon as the transaction safely commits.
+ */
struct journal_lifeboat
{
/* 512 bits total: 0 means free, 1 means occupied.
--
2.55.0
