2 files changed, 23 insertions, 3 deletions

diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 7ed1d3c53b8..46cf933aa3b 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -94,6 +94,11 @@ struct fuse_out {
 	/** Header returned from userspace */
 	struct fuse_out_header h;
 
+	/*
+	 * The following bitfields are not changed during the request
+	 * processing
+	 */
+
 	/** Last argument is variable length (can be shorter than
 	    arg->size) */
 	unsigned argvar:1;
@@ -136,6 +141,12 @@ struct fuse_req {
 	/** refcount */
 	atomic_t count;
 
+	/*
+	 * The following bitfields are either set once before the
+	 * request is queued or setting/clearing them is protected by
+	 * fuse_lock
+	 */
+
 	/** True if the request has reply */
 	unsigned isreply:1;
 
@@ -250,15 +261,22 @@ struct fuse_conn {
 	u64 reqctr;
 
 	/** Mount is active */
-	unsigned mounted : 1;
+	unsigned mounted;
 
 	/** Connection established, cleared on umount, connection
 	    abort and device release */
-	unsigned connected : 1;
+	unsigned connected;
 
-	/** Connection failed (version mismatch) */
+	/** Connection failed (version mismatch).  Cannot race with
+	    setting other bitfields since it is only set once in INIT
+	    reply, before any other request, and never cleared */
 	unsigned conn_error : 1;
 
+	/*
+	 * The following bitfields are only for optimization purposes
+	 * and hence races in setting them will not cause malfunction
+	 */
+
 	/** Is fsync not implemented by fs? */
 	unsigned no_fsync : 1;
 
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 8683e7254d5..c755a0440a6 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -397,6 +397,7 @@ static struct fuse_conn *new_conn(void)
 		init_rwsem(&fc->sbput_sem);
 		kobj_set_kset_s(fc, connections_subsys);
 		kobject_init(&fc->kobj);
+		atomic_set(&fc->num_waiting, 0);
 		for (i = 0; i < FUSE_MAX_OUTSTANDING; i++) {
 			struct fuse_req *req = fuse_request_alloc();
 			if (!req) {
@@ -492,6 +493,7 @@ static void fuse_send_init(struct fuse_conn *fc)
 	   to be exactly one request available */
 	struct fuse_req *req = fuse_get_request(fc);
 	struct fuse_init_in *arg = &req->misc.init_in;
+
 	arg->major = FUSE_KERNEL_VERSION;
 	arg->minor = FUSE_KERNEL_MINOR_VERSION;
 	req->in.h.opcode = FUSE_INIT;