fsnotify: use unsigned char * for dentry->d_name.name

fsnotify was using char * when it passed around the d_name.name string
internally but it is actually an unsigned char *.  This patch switches
fsnotify to use unsigned and should silence some pointer signess warnings
which have popped out of xfs.  I do not add -Wpointer-sign to the fsnotify
code as there are still issues with kstrdup and strlen which would pop
out needless warnings.

Signed-off-by: Eric Paris <eparis@redhat.com>

3 files changed, 6 insertions, 5 deletions

diff --git a/fs/namei.c b/fs/namei.c
index 868d0cb9d473..3479b176a4cd 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2635,7 +2635,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 {
         int error;
         int is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
-        const char *old_name;
+        const unsigned char *old_name;
 
         if (old_dentry->d_inode == new_dentry->d_inode)
                 return 0;
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 54d58d5f72c1..c5adf833bf6a 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -171,7 +171,7 @@ void __fsnotify_flush_ignored_mask(struct inode *inode, void *data, int data_is)
 
 static void send_to_group(struct fsnotify_group *group, struct inode *to_tell,
                           struct vfsmount *mnt, __u32 mask, void *data,
-                          int data_is, u32 cookie, const char *file_name,
+                          int data_is, u32 cookie, const unsigned char *file_name,
                           struct fsnotify_event **event)
 {
         if (!group->ops->should_send_event(group, to_tell, mnt, mask,
@@ -206,7 +206,8 @@ static bool needed_by_vfsmount(__u32 test_mask, struct vfsmount *mnt)
  * out to all of the registered fsnotify_group.  Those groups can then use the
  * notification event in whatever means they feel necessary.
  */
-void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, const char *file_name, u32 cookie)
+void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is,
+              const unsigned char *file_name, u32 cookie)
 {
         struct fsnotify_group *group;
         struct fsnotify_event *event = NULL;
diff --git a/fs/notify/notification.c b/fs/notify/notification.c
index 2d50a40ab1e4..b35faafacd38 100644
--- a/fs/notify/notification.c
+++ b/fs/notify/notification.c
@@ -370,8 +370,8 @@ struct fsnotify_event *fsnotify_clone_event(struct fsnotify_event *old_event)
  * @name the filename, if available
  */
 struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask, void *data,
-                                             int data_type, const char *name, u32 cookie,
-                                             gfp_t gfp)
+                                             int data_type, const unsigned char *name,
+                                             u32 cookie, gfp_t gfp)
 {
         struct fsnotify_event *event;