fuse: introduce per-instance fuse_dev structure
Allow fuse device clones to refer to be distinguished. This patch just
adds the infrastructure by associating a separate "struct fuse_dev" with
each clone.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Reviewed-by: Ashish Samant <ashish.samant@oracle.com>
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index a9507fd..42d59cb 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -418,6 +418,17 @@
};
/**
+ * Fuse device instance
+ */
+struct fuse_dev {
+ /** Fuse connection for this device */
+ struct fuse_conn *fc;
+
+ /** list entry on fc->devices */
+ struct list_head entry;
+};
+
+/**
* A Fuse connection.
*
* This structure is created, when the filesystem is mounted, and is
@@ -629,6 +640,9 @@
/** Read/write semaphore to hold when accessing sb. */
struct rw_semaphore killsb;
+
+ /** List of device instances belonging to this connection */
+ struct list_head devices;
};
static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
@@ -841,6 +855,9 @@
*/
void fuse_conn_put(struct fuse_conn *fc);
+struct fuse_dev *fuse_dev_alloc(struct fuse_conn *fc);
+void fuse_dev_free(struct fuse_dev *fud);
+
/**
* Add connection to control filesystem
*/