io_uring/rsrc: remove '->ctx_ptr' of 'struct io_rsrc_node'

Remove '->ctx_ptr' of 'struct io_rsrc_node', and add 'type' field,
meantime remove io_rsrc_node_type().

Signed-off-by: Ming Lei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>

Author: Ming Lei

io_uring/rsrc.c

@@ -124,7 +124,7 @@ struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx, int type)
 
 	node = kzalloc(sizeof(*node), GFP_KERNEL);
 	if (node) {
-		node->ctx_ptr = (unsigned long) ctx | type;
+		node->type = type;
 		node->refs = 1;
 	}
 	return node;
@@ -449,7 +449,7 @@ void io_free_rsrc_node(struct io_ring_ctx *ctx, struct io_rsrc_node *node)
 	if (node->tag)
 		io_post_aux_cqe(ctx, node->tag, 0, 0);
 
-	switch (io_rsrc_node_type(node)) {
+	switch (node->type) {
 	case IORING_RSRC_FILE:
 		if (io_slot_file(node))
 			fput(io_slot_file(node));

io_uring/rsrc.h

@@ -11,12 +11,10 @@
 enum {
 	IORING_RSRC_FILE		= 0,
 	IORING_RSRC_BUFFER		= 1,
-
-	IORING_RSRC_TYPE_MASK		= 0x3UL,
 };
 
 struct io_rsrc_node {
-	unsigned long			ctx_ptr;
+	unsigned char			type;
 	int				refs;
 
 	u64 tag;
@@ -106,11 +104,6 @@ static inline void io_req_put_rsrc_nodes(struct io_kiocb *req)
 	}
 }
 
-static inline int io_rsrc_node_type(struct io_rsrc_node *node)
-{
-	return node->ctx_ptr & IORING_RSRC_TYPE_MASK;
-}
-
 static inline void io_req_assign_rsrc_node(struct io_rsrc_node **dst_node,
 					   struct io_rsrc_node *node)
 {