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-rw-r--r--fs/xfs/xfs_buf.c10
-rw-r--r--fs/xfs/xfs_trans_ail.c1
2 files changed, 10 insertions, 1 deletions
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index ae86b16f9025..e143c7b66e35 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1527,6 +1527,16 @@ xfs_wait_buftarg(
LIST_HEAD(dispose);
int loop = 0;
+ /*
+ * We need to flush the buffer workqueue to ensure that all IO
+ * completion processing is 100% done. Just waiting on buffer locks is
+ * not sufficient for async IO as the reference count held over IO is
+ * not released until after the buffer lock is dropped. Hence we need to
+ * ensure here that all reference counts have been dropped before we
+ * start walking the LRU list.
+ */
+ drain_workqueue(btp->bt_mount->m_buf_workqueue);
+
/* loop until there is nothing left on the lru list. */
while (list_lru_count(&btp->bt_lru)) {
list_lru_walk(&btp->bt_lru, xfs_buftarg_wait_rele,
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index aa67339b9537..4f18fd92ca13 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -497,7 +497,6 @@ xfsaild(
long tout = 0; /* milliseconds */
current->flags |= PF_MEMALLOC;
- set_freezable();
while (!kthread_should_stop()) {
if (tout && tout <= 20)