fuse: separate pqueue for clones

Make each fuse device clone refer to a separate processing queue.  The only
constraint on userspace code is that the request answer must be written to
the same device clone as it was read off.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

1 files changed, 6 insertions, 3 deletions

diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 42d59cbd47e7..405113101db8 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -424,6 +424,9 @@ struct fuse_dev {
 	/** Fuse connection for this device */
 	struct fuse_conn *fc;
 
+	/** Processing queue */
+	struct fuse_pqueue pq;
+
 	/** list entry on fc->devices */
 	struct list_head entry;
 };
@@ -442,6 +445,9 @@ struct fuse_conn {
 	/** Refcount */
 	atomic_t count;
 
+	/** Number of fuse_dev's */
+	atomic_t dev_count;
+
 	struct rcu_head rcu;
 
 	/** The user id for this mount */
@@ -462,9 +468,6 @@ struct fuse_conn {
 	/** Input queue */
 	struct fuse_iqueue iq;
 
-	/** Processing queue */
-	struct fuse_pqueue pq;
-
 	/** The next unique kernel file handle */
 	u64 khctr;