fuse: ioctl cleanup

Get rid of unnecessary page_address()-es.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: Tejun Heo <tj@kernel.org>

1 files changed, 7 insertions, 8 deletions

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 8b984a2cebbd..ca3b6bbb3790 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1740,7 +1740,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
         struct fuse_ioctl_out outarg;
         struct fuse_req *req = NULL;
         struct page **pages = NULL;
-        struct page *iov_page = NULL;
+        struct iovec *iov_page = NULL;
         struct iovec *in_iov = NULL, *out_iov = NULL;
         unsigned int in_iovs = 0, out_iovs = 0, num_pages = 0, max_pages;
         size_t in_size, out_size, transferred;
@@ -1751,7 +1751,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
 
         err = -ENOMEM;
         pages = kzalloc(sizeof(pages[0]) * FUSE_MAX_PAGES_PER_REQ, GFP_KERNEL);
-        iov_page = alloc_page(GFP_KERNEL);
+        iov_page = (struct iovec *) __get_free_page(GFP_KERNEL);
         if (!pages || !iov_page)
                 goto out;
 
@@ -1760,7 +1760,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
          * RETRY from server is not allowed.
          */
         if (!(flags & FUSE_IOCTL_UNRESTRICTED)) {
-                struct iovec *iov = page_address(iov_page);
+                struct iovec *iov = iov_page;
 
                 iov->iov_base = (void __user *)arg;
                 iov->iov_len = _IOC_SIZE(cmd);
@@ -1841,7 +1841,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
 
         /* did it ask for retry? */
         if (outarg.flags & FUSE_IOCTL_RETRY) {
-                char *vaddr;
+                void *vaddr;
 
                 /* no retry if in restricted mode */
                 err = -EIO;
@@ -1862,14 +1862,14 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
                         goto out;
 
                 vaddr = kmap_atomic(pages[0], KM_USER0);
-                err = fuse_copy_ioctl_iovec(page_address(iov_page), vaddr,
+                err = fuse_copy_ioctl_iovec(iov_page, vaddr,
                                             transferred, in_iovs + out_iovs,
                                             (flags & FUSE_IOCTL_COMPAT) != 0);
                 kunmap_atomic(vaddr, KM_USER0);
                 if (err)
                         goto out;
 
-                in_iov = page_address(iov_page);
+                in_iov = iov_page;
                 out_iov = in_iov + in_iovs;
 
                 err = fuse_verify_ioctl_iov(in_iov, in_iovs);
@@ -1891,8 +1891,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
  out:
         if (req)
                 fuse_put_request(fc, req);
-        if (iov_page)
-                __free_page(iov_page);
+        free_page((unsigned long) iov_page);
         while (num_pages)
                 __free_page(pages[--num_pages]);
         kfree(pages);