fuse: move page alloc

fuse_req_pages_alloc() is moved to file.c, since its internal use by the
device code will eventually be removed.

Rename to fuse_pages_alloc() to signify that it's not only usable for
fuse_req page array.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 53f2cc6970f1..c3e95002f489 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -19,6 +19,18 @@
 #include <linux/falloc.h>
 #include <linux/uio.h>
 
+struct page **fuse_pages_alloc(unsigned int npages, gfp_t flags,
+			       struct fuse_page_desc **desc)
+{
+	struct page **pages;
+
+	pages = kzalloc(npages * (sizeof(struct page *) +
+				  sizeof(struct fuse_page_desc)), flags);
+	*desc = (void *) (pages + npages);
+
+	return pages;
+}
+
 static int fuse_send_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
 			  int opcode, struct fuse_open_out *outargp)
 {