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-rw-r--r--block/blk-core.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 627ed0c59..d1a63defd 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -48,6 +48,8 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(block_unplug);
DEFINE_IDA(blk_queue_ida);
+int trap_non_toi_io;
+
/*
* For the allocated request tables
*/
@@ -1988,6 +1990,9 @@ void submit_bio(int rw, struct bio *bio)
{
bio->bi_rw |= rw;
+ if (unlikely(trap_non_toi_io))
+ BUG_ON(!(bio->bi_flags & (1 << BIO_TOI)));
+
/*
* If it's a regular read/write or a barrier with data attached,
* go through the normal accounting stuff before submission.