[PATCH 4/8] io_uring/rsrc: add lockdep checks

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Add a lockdep chek to make sure that file and buffer updates hold
->uring_lock.

Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
 io_uring/rsrc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index 603a783a0383..24e4e2109549 100644
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c
@@ -534,6 +534,8 @@ static int __io_register_rsrc_update(struct io_ring_ctx *ctx, unsigned type,
 	__u32 tmp;
 	int err;
 
+	lockdep_assert_held(&ctx->uring_lock);
+
 	if (check_add_overflow(up->offset, nr_args, &tmp))
 		return -EOVERFLOW;
 	err = io_rsrc_node_switch_start(ctx);
-- 
2.40.0




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