diff -drupN a/fs/fat/Kconfig b/fs/fat/Kconfig
--- a/fs/fat/Kconfig	2018-08-06 17:23:04.000000000 +0300
+++ b/fs/fat/Kconfig	2022-06-12 05:28:14.000000000 +0300
@@ -57,6 +57,37 @@ config MSDOS_FS
 	  as well. To compile this as a module, choose M here: the module will
 	  be called msdos.
 
+config PRELLOCATE_FLAG
+	tristate "Add fallocate flag"
+	depends on FAT_FS
+	help
+	  If this configuration is enabled, the fallocate flag is set.
+
+config FAT1_UPDATE_ONLY
+	tristate "update fat1 only"
+	depends on FAT_FS
+	help
+	  If this configuration is enabled, update only FAT1 not FAT2 when writing data.
+
+config OPTIMIZE_METADATA_REFRESH
+	tristate "Optimize metadata refresh when writing data"
+	depends on FAT_FS
+	help
+	  If this configuration is enabled, Added flush interface to refresh
+	  metadata uniformly when close files
+
+config TRUNCATE_NOMEM_RECLAIM
+	tristate "Add fallocate and don't reclaim."
+	depends on PRELLOCATE_FLAG
+	help
+	  If this configuration enabled, don't reclaim unused fat entrys alloced by fallocate.
+
+config TRUNCATE_NOMEM_RECLAIM_DISCARD
+	tristate "use TRUNCATE_NOMEM_RECLAIM function and discard"
+	depends on PRELLOCATE_FLAG && TRUNCATE_NOMEM_RECLAIM
+	help
+	  If this configuration enabled, discard fat entrys alloced by fallocate when fat free.
+
 config VFAT_FS
 	tristate "VFAT (Windows-95) fs support"
 	select FAT_FS
@@ -114,3 +145,11 @@ config FAT_DEFAULT_UTF8
 	  Say Y if you use UTF-8 encoding for file names, N otherwise.
 
 	  See <file:Documentation/filesystems/vfat.txt> for more information.
+
+config FAT_READ_FAT_DIR_SUNXI
+	bool "Sunxi all read fat and some dir to mem ahead"
+	depends on MSDOS_FS || VFAT_FS
+	help
+		It will read fat and dir data to mem on mount,and relase it until
+		umount
+