fs: rename fs_types.h to fs_dirent.h

We will split out a bunch of types into a separate header.
So free up the appropriate name for it.

Link: https://patch.msgid.link/20251104-work-fs-header-v1-1-fb39a2efe39e@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

fs/Makefile

@@ -14,7 +14,7 @@ obj-y :=	open.o read_write.o file_table.o super.o \
 		seq_file.o xattr.o libfs.o fs-writeback.o \
 		pnode.o splice.o sync.o utimes.o d_path.o \
 		stack.o fs_struct.o statfs.o fs_pin.o nsfs.o \
-		fs_types.o fs_context.o fs_parser.o fsopen.o init.o \
+		fs_dirent.o fs_context.o fs_parser.o fsopen.o init.o \
 		kernel_read_file.o mnt_idmapping.o remap_range.o pidfs.o \
 		file_attr.o
 

fs/fs_dirent.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-#include <linux/fs.h>
+#include <linux/fs_dirent.h>
 #include <linux/export.h>
 
 /*

include/linux/fs.h

@@ -37,7 +37,7 @@
 #include <linux/uuid.h>
 #include <linux/errseq.h>
 #include <linux/ioprio.h>
-#include <linux/fs_types.h>
+#include <linux/fs_dirent.h>
 #include <linux/build_bug.h>
 #include <linux/stddef.h>
 #include <linux/mount.h>

include/linux/fs_dirent.h

@@ -1,6 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_FS_TYPES_H
-#define _LINUX_FS_TYPES_H
+#ifndef _LINUX_FS_DIRENT_H
+#define _LINUX_FS_DIRENT_H
+
+#include <linux/stat.h>
+#include <linux/types.h>
 
 /*
  * This is a header for the common implementation of dirent
@@ -66,10 +69,10 @@
 
 /*
  * declarations for helper functions, accompanying implementation
- * is in fs/fs_types.c
+ * is in fs/fs_dirent.c
  */
 extern unsigned char fs_ftype_to_dtype(unsigned int filetype);
 extern unsigned char fs_umode_to_ftype(umode_t mode);
 extern unsigned char fs_umode_to_dtype(umode_t mode);
 
-#endif
+#endif /* _LINUX_FS_DIRENT_H */