fuse: break infinite loop in fuse_fill_write_pages()

[firefly-linux-kernel-4.4.55.git] / fs / fuse / file.c

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index f523f2f04c196db5b1201a38a6e3222ae40d1724..195476a24148ba01d6609b72f60c98596d2065e1 100644 (file)
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1049,6 +1049,7 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
                tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes);
                flush_dcache_page(page);
 
+               iov_iter_advance(ii, tmp);
                if (!tmp) {
                        unlock_page(page);
                        page_cache_release(page);
@@ -1061,7 +1062,6 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
                req->page_descs[req->num_pages].length = tmp;
                req->num_pages++;
 
-               iov_iter_advance(ii, tmp);
                count += tmp;
                pos += tmp;
                offset += tmp;