fs/netfs: declare field proc_link only if CONFIG_PROC_FS=y

This field is only used for the "proc" filesystem.

Signed-off-by: Max Kellermann <[email protected]>
Signed-off-by: David Howells <[email protected]>
Link: https://lore.kernel.org/[email protected]
cc: Paulo Alcantara <[email protected]>
cc: [email protected]
cc: [email protected]
Signed-off-by: Christian Brauner <[email protected]>

Author: MaxKellermann

include/linux/netfs.h

@@ -228,7 +228,9 @@ struct netfs_io_request {
 	struct kiocb		*iocb;		/* AIO completion vector */
 	struct netfs_cache_resources cache_resources;
 	struct netfs_io_request	*copy_to_cache;	/* Request to write just-read data to the cache */
+#ifdef CONFIG_PROC_FS
 	struct list_head	proc_link;	/* Link in netfs_iorequests */
+#endif
 	struct netfs_io_stream	io_streams[2];	/* Streams of parallel I/O operations */
 #define NR_IO_STREAMS 2 //wreq->nr_io_streams
 	struct netfs_group	*group;		/* Writeback group being written back */