[PATCH] fuse: rename struct fuse_arg to fuse_out_arg

[kusumi.tomohiro@xxxxxxxxx]

From: Tomohiro Kusumi <tkusumi@xxxxxxxxxx>

Use the same naming scheme as in arg. There's also struct fuse_args
as temporary holder of in/out args before in/out args get copied
to a fuse request, which makes these structures a bit confusing.

Signed-off-by: Tomohiro Kusumi <tkusumi@xxxxxxxxxx>
---
 fs/fuse/dev.c    | 17 ++++++++++-------
 fs/fuse/fuse_i.h |  6 +++---
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index f117926..3bb180c 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -288,7 +288,10 @@ void fuse_put_request(struct fuse_conn *fc, struct fuse_req *req)
 }
 EXPORT_SYMBOL_GPL(fuse_put_request);
 
-static unsigned len_args(unsigned numargs, struct fuse_arg *args)
+/*
+ * This function also works for fuse_in_arg
+ */
+static unsigned len_args(unsigned numargs, struct fuse_out_arg *args)
 {
 	unsigned nbytes = 0;
 	unsigned i;
@@ -307,7 +310,7 @@ static u64 fuse_get_unique(struct fuse_iqueue *fiq)
 static void queue_request(struct fuse_iqueue *fiq, struct fuse_req *req)
 {
 	req->in.h.len = sizeof(struct fuse_in_header) +
-		len_args(req->in.numargs, (struct fuse_arg *) req->in.args);
+		len_args(req->in.numargs, (struct fuse_out_arg *) req->in.args);
 	list_add_tail(&req->list, &fiq->pending);
 	wake_up_locked(&fiq->waitq);
 	kill_fasync(&fiq->fasync, SIGIO, POLL_IN);
@@ -543,7 +546,7 @@ ssize_t fuse_simple_request(struct fuse_conn *fc, struct fuse_args *args)
 	req->out.argvar = args->out.argvar;
 	req->out.numargs = args->out.numargs;
 	memcpy(req->out.args, args->out.args,
-	       args->out.numargs * sizeof(struct fuse_arg));
+	       args->out.numargs * sizeof(struct fuse_out_arg));
 	fuse_request_send(fc, req);
 	ret = req->out.h.error;
 	if (!ret && args->out.argvar) {
@@ -1021,14 +1024,14 @@ static int fuse_copy_one(struct fuse_copy_state *cs, void *val, unsigned size)
 
 /* Copy request arguments to/from userspace buffer */
 static int fuse_copy_args(struct fuse_copy_state *cs, unsigned numargs,
-			  unsigned argpages, struct fuse_arg *args,
+			  unsigned argpages, struct fuse_out_arg *args,
 			  int zeroing)
 {
 	int err = 0;
 	unsigned i;
 
 	for (i = 0; !err && i < numargs; i++)  {
-		struct fuse_arg *arg = &args[i];
+		struct fuse_out_arg *arg = &args[i];
 		if (i == numargs - 1 && argpages)
 			err = fuse_copy_pages(cs, arg->size, zeroing);
 		else
@@ -1275,7 +1278,7 @@ static ssize_t fuse_dev_do_read(struct fuse_dev *fud, struct file *file,
 	err = fuse_copy_one(cs, &in->h, sizeof(in->h));
 	if (!err)
 		err = fuse_copy_args(cs, in->numargs, in->argpages,
-				     (struct fuse_arg *) in->args, 0);
+				     (struct fuse_out_arg *) in->args, 0);
 	fuse_copy_finish(cs);
 	spin_lock(&fpq->lock);
 	clear_bit(FR_LOCKED, &req->flags);
@@ -1794,7 +1797,7 @@ static int copy_out_args(struct fuse_copy_state *cs, struct fuse_out *out,
 	if (reqsize < nbytes || (reqsize > nbytes && !out->argvar))
 		return -EINVAL;
 	else if (reqsize > nbytes) {
-		struct fuse_arg *lastarg = &out->args[out->numargs-1];
+		struct fuse_out_arg *lastarg = &out->args[out->numargs-1];
 		unsigned diffsize = reqsize - nbytes;
 		if (diffsize > lastarg->size)
 			return -EINVAL;
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 9130794..5022fbe 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -177,7 +177,7 @@ struct fuse_in {
 };
 
 /** One output argument of a request */
-struct fuse_arg {
+struct fuse_out_arg {
 	unsigned size;
 	void *value;
 };
@@ -209,7 +209,7 @@ struct fuse_out {
 	unsigned numargs;
 
 	/** Array of arguments */
-	struct fuse_arg args[2];
+	struct fuse_out_arg args[2];
 };
 
 /** FUSE page descriptor */
@@ -231,7 +231,7 @@ struct fuse_args {
 	struct {
 		unsigned argvar:1;
 		unsigned numargs;
-		struct fuse_arg args[2];
+		struct fuse_out_arg args[2];
 	} out;
 };
 
-- 
2.9.3