io_uring/rsrc: infer node from ctx on io_queue_rsrc_removal

For io_queue_rsrc_removal() we should always use the current active rsrc
node, don't pass it directly but let the function grab it from the
context.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d15939b4afea730978b4925685c2577538b823bb.1681822823.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: isilence

io_uring/filetable.c

@@ -85,8 +85,7 @@ static int io_install_fixed_file(struct io_ring_ctx *ctx, struct file *file,
 			return ret;
 
 		old_file = (struct file *)(file_slot->file_ptr & FFS_MASK);
-		ret = io_queue_rsrc_removal(ctx->file_data, slot_index,
-					    ctx->rsrc_node, old_file);
+		ret = io_queue_rsrc_removal(ctx->file_data, slot_index, old_file);
 		if (ret)
 			return ret;
 
@@ -163,7 +162,7 @@ int io_fixed_fd_remove(struct io_ring_ctx *ctx, unsigned int offset)
 		return -EBADF;
 
 	file = (struct file *)(file_slot->file_ptr & FFS_MASK);
-	ret = io_queue_rsrc_removal(ctx->file_data, offset, ctx->rsrc_node, file);
+	ret = io_queue_rsrc_removal(ctx->file_data, offset, file);
 	if (ret)
 		return ret;
 

io_uring/rsrc.c

@@ -409,7 +409,7 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx,
 
 		if (file_slot->file_ptr) {
 			file = (struct file *)(file_slot->file_ptr & FFS_MASK);
-			err = io_queue_rsrc_removal(data, i, ctx->rsrc_node, file);
+			err = io_queue_rsrc_removal(data, i, file);
 			if (err)
 				break;
 			file_slot->file_ptr = 0;
@@ -492,7 +492,7 @@ static int __io_sqe_buffers_update(struct io_ring_ctx *ctx,
 		i = array_index_nospec(up->offset + done, ctx->nr_user_bufs);
 		if (ctx->user_bufs[i] != ctx->dummy_ubuf) {
 			err = io_queue_rsrc_removal(ctx->buf_data, i,
-						    ctx->rsrc_node, ctx->user_bufs[i]);
+						    ctx->user_bufs[i]);
 			if (unlikely(err)) {
 				io_buffer_unmap(ctx, &imu);
 				break;
@@ -680,9 +680,10 @@ int io_files_update(struct io_kiocb *req, unsigned int issue_flags)
 	return IOU_OK;
 }
 
-int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx,
-			  struct io_rsrc_node *node, void *rsrc)
+int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx, void *rsrc)
 {
+	struct io_ring_ctx *ctx = data->ctx;
+	struct io_rsrc_node *node = ctx->rsrc_node;
 	u64 *tag_slot = io_get_tag_slot(data, idx);
 	struct io_rsrc_put *prsrc;
 

io_uring/rsrc.h

@@ -70,8 +70,7 @@ void io_rsrc_put_work(struct work_struct *work);
 void io_rsrc_node_destroy(struct io_ring_ctx *ctx, struct io_rsrc_node *ref_node);
 int __io_rsrc_node_switch_start(struct io_ring_ctx *ctx);
 struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx);
-int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx,
-			  struct io_rsrc_node *node, void *rsrc);
+int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx, void *rsrc);
 void io_rsrc_node_switch(struct io_ring_ctx *ctx,
 			 struct io_rsrc_data *data_to_kill);