[RFC PATCH 03/12] fs, block: interface to register/unregister the raw-queue

[Kanchan Joshi]

From: Anuj Gupta <anuj20.g at samsung.com>

Introduce register/unregister callbacks to fops and mq_ops, so that
callers can attach/detach to raw-queues.

Signed-off-by: Anuj Gupta <anuj20.g at samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k at samsung.com>
---
 include/linux/blk-mq.h | 2 ++
 include/linux/fs.h     | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 06caacd77ed6..7d6790be4847 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -657,6 +657,8 @@ struct blk_mq_ops {
 	 * information about a request.
 	 */
 	void (*show_rq)(struct seq_file *m, struct request *rq);
+	int (*register_queue)(void *data);
+	int (*unregister_queue)(void *data, int qid);
 #endif
 };
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 475d88640d3d..79acccc5e7d4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1798,6 +1798,8 @@ struct file_operations {
 	int (*uring_cmd)(struct io_uring_cmd *ioucmd, unsigned int issue_flags);
 	int (*uring_cmd_iopoll)(struct io_uring_cmd *, struct io_comp_batch *,
 				unsigned int poll_flags);
+	int (*register_queue)(struct file *f);
+	int (*unregister_queue)(struct file *f, int qid);
 } __randomize_layout;
 
 struct inode_operations {
-- 
2.25.1