:orphan:

.. title:: CONFIG_FS_LITTLEFS_LOOKAHEAD_SIZE

.. kconfig:: CONFIG_FS_LITTLEFS_LOOKAHEAD_SIZE

CONFIG_FS_LITTLEFS_LOOKAHEAD_SIZE
#################################

*Size of lookahead buffer in bytes*

Type: ``int``

Help
====

.. code-block:: none

    A larger lookahead buffer increases the number of blocks found
    during an allocation pass. The lookahead buffer is stored as a
    compact bitmap, so each byte of RAM can track 8 blocks. Must
    be a multiple of 8.

Direct dependencies
===================

\ :kconfig:`FILE_SYSTEM_LITTLEFS <CONFIG_FILE_SYSTEM_LITTLEFS>` && \ :kconfig:`FILE_SYSTEM <CONFIG_FILE_SYSTEM>`

*(Includes any dependencies from ifs and menus.)*

Default
=======

- 32

Kconfig definition
==================



At ``<Zephyr Subsystem>/fs/Kconfig.littlefs:54``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:44`` → ``<Zephyr Subsystem>/Kconfig:25`` → ``<Zephyr Subsystem>/fs/Kconfig:61``

Menu path: (Top) → Sub Systems and OS Services → File Systems → File system support → LittleFS support → LittleFS Settings

.. code-block:: kconfig

    config FS_LITTLEFS_LOOKAHEAD_SIZE
    	int "Size of lookahead buffer in bytes" if FILE_SYSTEM_LITTLEFS
    	default 32
    	depends on FILE_SYSTEM_LITTLEFS && FILE_SYSTEM
    	help
    	  A larger lookahead buffer increases the number of blocks found
    	  during an allocation pass. The lookahead buffer is stored as a
    	  compact bitmap, so each byte of RAM can track 8 blocks. Must
    	  be a multiple of 8.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*