cifs: convert async read code to use pages array without kmapping

Replace the "marshal_iov" function with a "read_into_pages" function.
That function will copy the read data off the socket and into the
pages array, kmapping and reading pages one at a time.

Signed-off-by: Jeff Layton <jlayton@redhat.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index b70863ebedf2..93e16200b2e8 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -978,8 +978,11 @@ struct cifs_readdata {
         pid_t                           pid;
         int                             result;
         struct work_struct              work;
-        int (*marshal_iov) (struct cifs_readdata *rdata,
-                            unsigned int remaining);
+        int (*read_into_pages)(struct TCP_Server_Info *server,
+                                struct cifs_readdata *rdata,
+                                unsigned int len);
+        unsigned int                    pagesz;
+        unsigned int                    tailsz;
         unsigned int                    nr_iov;
         struct kvec                     *iov;
         unsigned int                    nr_pages;