fs: common implementation of file type

Many file systems use a copy&paste implementation
of dirent to on-disk file type conversions.

Create a common implementation to be used by file systems
with some useful conversion helpers to reduce open coded
file type conversions in file system code.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 1 insertions, 16 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 811c77743dad..92966678539d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -37,6 +37,7 @@
 #include <linux/uuid.h>
 #include <linux/errseq.h>
 #include <linux/ioprio.h>
+#include <linux/fs_types.h>
 
 #include <asm/byteorder.h>
 #include <uapi/linux/fs.h>
@@ -1700,22 +1701,6 @@ int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical,
 int fiemap_check_flags(struct fiemap_extent_info *fieinfo, u32 fs_flags);
 
 /*
- * File types
- *
- * NOTE! These match bits 12..15 of stat.st_mode
- * (ie "(i_mode >> 12) & 15").
- */
-#define DT_UNKNOWN      0
-#define DT_FIFO         1
-#define DT_CHR          2
-#define DT_DIR          4
-#define DT_BLK          6
-#define DT_REG          8
-#define DT_LNK          10
-#define DT_SOCK         12
-#define DT_WHT          14
-
-/*
  * This is the "filldir" function type, used by readdir() to let
  * the kernel specify what kind of dirent layout it wants to have.
  * This allows the kernel to read directories into kernel space or