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    Subject[PATCH 10/10] Add yaffs2 file system: Hook in to Linux tree
    Date
    Change existing Makefile, Kconfig and MAINTAINERS.
    Add yaffs2 specific Makefile and Kconfig

    Signed-off-by: Charles Manning <cdhmanning@gmail.com>
    ---
    MAINTAINERS | 7 ++
    fs/Kconfig | 1 +
    fs/Makefile | 1 +
    fs/yaffs2/Kconfig | 161 ++++++++++++++++++++++++++++++++++++++++++++++++++++
    fs/yaffs2/Makefile | 17 ++++++
    5 files changed, 187 insertions(+), 0 deletions(-)
    create mode 100644 fs/yaffs2/Kconfig
    create mode 100644 fs/yaffs2/Makefile

    diff --git a/MAINTAINERS b/MAINTAINERS
    index 64d7621..4cc7215 100644
    --- a/MAINTAINERS
    +++ b/MAINTAINERS
    @@ -6838,6 +6838,13 @@ L: linux-serial@vger.kernel.org
    S: Maintained
    F: drivers/serial/uartlite.c

    +YAFFS2 FLASH FILE SYSTEM
    +M: Charles Manning <cdhmanning@gmail.com>
    +W: http://www.yaffs.net/
    +L: yaffs@lists.aleph1.co.uk
    +S: Maintained
    +F: fs/yaffs2
    +
    YAM DRIVER FOR AX.25
    M: Jean-Paul Roubelat <jpr@f6fbb.org>
    L: linux-hams@vger.kernel.org
    diff --git a/fs/Kconfig b/fs/Kconfig
    index 771f457..069abb1 100644
    --- a/fs/Kconfig
    +++ b/fs/Kconfig
    @@ -176,6 +176,7 @@ source "fs/hfsplus/Kconfig"
    source "fs/befs/Kconfig"
    source "fs/bfs/Kconfig"
    source "fs/efs/Kconfig"
    +source "fs/yaffs2/Kconfig"
    source "fs/jffs2/Kconfig"
    # UBIFS File system configuration
    source "fs/ubifs/Kconfig"
    diff --git a/fs/Makefile b/fs/Makefile
    index a7f7cef..e370ea5 100644
    --- a/fs/Makefile
    +++ b/fs/Makefile
    @@ -121,3 +121,4 @@ obj-$(CONFIG_BTRFS_FS) += btrfs/
    obj-$(CONFIG_GFS2_FS) += gfs2/
    obj-$(CONFIG_EXOFS_FS) += exofs/
    obj-$(CONFIG_CEPH_FS) += ceph/
    +obj-$(CONFIG_YAFFS_FS) += yaffs2/
    diff --git a/fs/yaffs2/Kconfig b/fs/yaffs2/Kconfig
    new file mode 100644
    index 0000000..6354140
    --- /dev/null
    +++ b/fs/yaffs2/Kconfig
    @@ -0,0 +1,161 @@
    +#
    +# YAFFS file system configurations
    +#
    +
    +config YAFFS_FS
    + tristate "YAFFS2 file system support"
    + default n
    + depends on MTD_BLOCK
    + select YAFFS_YAFFS1
    + select YAFFS_YAFFS2
    + help
    + YAFFS2, or Yet Another Flash Filing System, is a filing system
    + optimised for NAND Flash chips.
    +
    + To compile the YAFFS2 file system support as a module, choose M
    + here: the module will be called yaffs2.
    +
    + If unsure, say N.
    +
    + Further information on YAFFS2 is available at
    + <http://www.aleph1.co.uk/yaffs/>.
    +
    +config YAFFS_YAFFS1
    + bool "512 byte / page devices"
    + depends on YAFFS_FS
    + default y
    + help
    + Enable YAFFS1 support -- yaffs for 512 byte / page devices
    +
    + Not needed for 2K-page devices.
    +
    + If unsure, say Y.
    +
    +config YAFFS_9BYTE_TAGS
    + bool "Use older-style on-NAND data format with pageStatus byte"
    + depends on YAFFS_YAFFS1
    + default n
    + help
    +
    + Older-style on-NAND data format has a "pageStatus" byte to record
    + chunk/page state. This byte is zero when the page is discarded.
    + Choose this option if you have existing on-NAND data using this
    + format that you need to continue to support. New data written
    + also uses the older-style format. Note: Use of this option
    + generally requires that MTD's oob layout be adjusted to use the
    + older-style format. See notes on tags formats and MTD versions
    + in yaffs_mtdif1.c.
    +
    + If unsure, say N.
    +
    +config YAFFS_DOES_ECC
    + bool "Lets Yaffs do its own ECC"
    + depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS
    + default n
    + help
    + This enables Yaffs to use its own ECC functions instead of using
    + the ones from the generic MTD-NAND driver.
    +
    + If unsure, say N.
    +
    +config YAFFS_ECC_WRONG_ORDER
    + bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
    + depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS
    + default n
    + help
    + This makes yaffs_ecc.c use the same ecc byte order as Steven
    + Hill's nand_ecc.c. If not set, then you get the same ecc byte
    + order as SmartMedia.
    +
    + If unsure, say N.
    +
    +config YAFFS_YAFFS2
    + bool "2048 byte (or larger) / page devices"
    + depends on YAFFS_FS
    + default y
    + help
    + Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices
    +
    + If unsure, say Y.
    +
    +config YAFFS_AUTO_YAFFS2
    + bool "Autoselect yaffs2 format"
    + depends on YAFFS_YAFFS2
    + default y
    + help
    + Without this, you need to explicitely use yaffs2 as the file
    + system type. With this, you can say "yaffs" and yaffs or yaffs2
    + will be used depending on the device page size (yaffs on
    + 512-byte page devices, yaffs2 on 2K page devices).
    +
    + If unsure, say Y.
    +
    +config YAFFS_DISABLE_TAGS_ECC
    + bool "Disable YAFFS from doing ECC on tags by default"
    + depends on YAFFS_FS && YAFFS_YAFFS2
    + default n
    + help
    + This defaults Yaffs to using its own ECC calculations on tags instead of
    + just relying on the MTD.
    + This behavior can also be overridden with tags_ecc_on and
    + tags_ecc_off mount options.
    +
    + If unsure, say N.
    +
    +config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
    + bool "Force chunk erase check"
    + depends on YAFFS_FS
    + default n
    + help
    + Normally YAFFS only checks chunks before writing until an erased
    + chunk is found. This helps to detect any partially written
    + chunks that might have happened due to power loss.
    +
    + Enabling this forces on the test that chunks are erased in flash
    + before writing to them. This takes more time but is potentially
    + a bit more secure.
    +
    + Suggest setting Y during development and ironing out driver
    + issues etc. Suggest setting to N if you want faster writing.
    +
    + If unsure, say Y.
    +
    +config YAFFS_EMPTY_LOST_AND_FOUND
    + bool "Empty lost and found on boot"
    + depends on YAFFS_FS
    + default n
    + help
    + If this is enabled then the contents of lost and found is
    + automatically dumped at mount.
    +
    + If unsure, say N.
    +
    +config YAFFS_DISABLE_BLOCK_REFRESHING
    + bool "Disable yaffs2 block refreshing"
    + depends on YAFFS_FS
    + default n
    + help
    + If this is set, then block refreshing is disabled.
    + Block refreshing infrequently refreshes the oldest block in
    + a yaffs2 file system. This mechanism helps to refresh flash to
    + mitigate against data loss. This is particularly useful for MLC.
    +
    + If unsure, say N.
    +
    +config YAFFS_DISABLE_BACKGROUND
    + bool "Disable yaffs2 background processing"
    + depends on YAFFS_FS
    + default n
    + help
    + If this is set, then background processing is disabled.
    + Background processing makes many foreground activities faster.
    +
    + If unsure, say N.
    +
    +config YAFFS_XATTR
    + bool "Enable yaffs2 xattr support"
    + depends on YAFFS_FS
    + default y
    + help
    + If this is set then yaffs2 will provide xattr support.
    + If unsure, say Y.
    diff --git a/fs/yaffs2/Makefile b/fs/yaffs2/Makefile
    new file mode 100644
    index 0000000..e63a28a
    --- /dev/null
    +++ b/fs/yaffs2/Makefile
    @@ -0,0 +1,17 @@
    +#
    +# Makefile for the linux YAFFS filesystem routines.
    +#
    +
    +obj-$(CONFIG_YAFFS_FS) += yaffs.o
    +
    +yaffs-y := yaffs_ecc.o yaffs_vfs.o yaffs_guts.o yaffs_checkptrw.o
    +yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o
    +yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
    +yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
    +yaffs-y += yaffs_nameval.o yaffs_attribs.o
    +yaffs-y += yaffs_allocator.o
    +yaffs-y += yaffs_yaffs1.o
    +yaffs-y += yaffs_yaffs2.o
    +yaffs-y += yaffs_bitmap.o
    +yaffs-y += yaffs_verify.o
    +
    --
    1.7.1


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