fs/9p: Update zero-copy implementation in 9p

* remove lot of update to different data structure
* add a seperate callback for zero copy request.
* above makes non zero copy code path simpler
* remove conditionalizing TREAD/TREADDIR/TWRITE in the zero copy path
* Fix the dotu p9_check_errors with zero copy. Add sufficient doc around
* Add support for both in and output buffers in zero copy callback
* pin and unpin pages in the same context
* use helpers instead of defining page offset and rest of page ourself
* Fix mem leak in p9_check_errors
* Remove 'E' and 'F' in p9pdu_vwritef

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index 9c2bdda5cd9..ce6600f3365 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -231,7 +231,7 @@ static int v9fs_dir_readdir_dotl(struct file *filp, void *dirent,
         while (err == 0) {
                 if (rdir->tail == rdir->head) {
                         err = p9_client_readdir(fid, rdir->buf, buflen,
-                                                                filp->f_pos);
+                                                filp->f_pos);
                         if (err <= 0)
                                 goto unlock_and_exit;