[PATCH v2 05/30] fuse: export fuse_len_args()

[Vivek Goyal]

From: Stefan Hajnoczi <stefa...@redhat.com>

virtio-fs will need to query the length of fuse_arg lists.  Make the
symbol visible.

Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
 fs/fuse/dev.c    | 7 ++++---
 fs/fuse/fuse_i.h | 5 +++++
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 46d1aecd7506..d8054b1a45f5 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -350,7 +350,7 @@ 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)
+unsigned fuse_len_args(unsigned numargs, struct fuse_arg *args)
 {
        unsigned nbytes = 0;
        unsigned i;
@@ -360,6 +360,7 @@ static unsigned len_args(unsigned numargs, struct fuse_arg 
*args)
 
        return nbytes;
 }
+EXPORT_SYMBOL_GPL(fuse_len_args);
 
 static u64 fuse_get_unique(struct fuse_iqueue *fiq)
 {
@@ -375,7 +376,7 @@ static unsigned int fuse_req_hash(u64 unique)
 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);
+               fuse_len_args(req->in.numargs, (struct fuse_arg *) 
req->in.args);
        list_add_tail(&req->list, &fiq->pending);
        wake_up_locked(&fiq->waitq);
        kill_fasync(&fiq->fasync, SIGIO, POLL_IN);
@@ -1894,7 +1895,7 @@ static int copy_out_args(struct fuse_copy_state *cs, 
struct fuse_out *out,
        if (out->h.error)
                return nbytes != reqsize ? -EINVAL : 0;
 
-       reqsize += len_args(out->numargs, out->args);
+       reqsize += fuse_len_args(out->numargs, out->args);
 
        if (reqsize < nbytes || (reqsize > nbytes && !out->argvar))
                return -EINVAL;
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index c4584c873b87..3a235386d667 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1091,4 +1091,9 @@ int fuse_set_acl(struct inode *inode, struct posix_acl 
*acl, int type);
 /* readdir.c */
 int fuse_readdir(struct file *file, struct dir_context *ctx);
 
+/**
+ * Return the number of bytes in an arguments list
+ */
+unsigned fuse_len_args(unsigned numargs, struct fuse_arg *args);
+
 #endif /* _FS_FUSE_I_H */
-- 
2.20.1