On 10.03.2018 20:17, Andiry Xu wrote:
> From: Andiry Xu <jix...@cs.ucsd.edu>
> 
> Signed-off-by: Andiry Xu <jix...@cs.ucsd.edu>
> ---
>  fs/Kconfig       |  2 ++
>  fs/Makefile      |  1 +
>  fs/nova/Kconfig  | 15 +++++++++++++++
>  fs/nova/Makefile |  7 +++++++
>  4 files changed, 25 insertions(+)
>  create mode 100644 fs/nova/Kconfig
>  create mode 100644 fs/nova/Makefile
> 
> diff --git a/fs/Kconfig b/fs/Kconfig
> index bc821a8..5e9ff3e 100644
> --- a/fs/Kconfig
> +++ b/fs/Kconfig
> @@ -58,6 +58,8 @@ config FS_DAX_PMD
>       depends on ZONE_DEVICE
>       depends on TRANSPARENT_HUGEPAGE
>  
> +source "fs/nova/Kconfig"
> +
>  # Selected by DAX drivers that do not expect filesystem DAX to support
>  # get_user_pages() of DAX mappings. I.e. "limited" indicates no support
>  # for fork() of processes with MAP_SHARED mappings or support for
> diff --git a/fs/Makefile b/fs/Makefile
> index add789e..65ea619 100644
> --- a/fs/Makefile
> +++ b/fs/Makefile
> @@ -113,6 +113,7 @@ obj-$(CONFIG_OMFS_FS)             += omfs/
>  obj-$(CONFIG_JFS_FS)         += jfs/
>  obj-$(CONFIG_XFS_FS)         += xfs/
>  obj-$(CONFIG_9P_FS)          += 9p/
> +obj-$(CONFIG_NOVA_FS)                += nova/
>  obj-$(CONFIG_AFS_FS)         += afs/
>  obj-$(CONFIG_NILFS2_FS)              += nilfs2/
>  obj-$(CONFIG_BEFS_FS)                += befs/
> diff --git a/fs/nova/Kconfig b/fs/nova/Kconfig
> new file mode 100644
> index 0000000..c1c692e
> --- /dev/null
> +++ b/fs/nova/Kconfig
> @@ -0,0 +1,15 @@
> +config NOVA_FS
> +     tristate "NOVA: log-structured file system for non-volatile memories"
> +     depends on FS_DAX
> +     select CRC32

What do you need crc32 for? Selecting libcrc32c is enough to do "the
right thing"

> +     select LIBCRC32C
> +     help
> +       If your system has a block of fast (comparable in access speed to
> +       system memory) and non-volatile byte-addressable memory and you wish
> +       to mount a light-weight filesystem with strong consistency support
> +       over it, say Y here.
> +
> +       To compile this as a module, choose M here: the module will be
> +       called nova.
> +
> +       If unsure, say N.
> diff --git a/fs/nova/Makefile b/fs/nova/Makefile
> new file mode 100644
> index 0000000..eb19646
> --- /dev/null
> +++ b/fs/nova/Makefile
> @@ -0,0 +1,7 @@
> +#
> +# Makefile for the linux NOVA filesystem routines.
> +#
> +
> +obj-$(CONFIG_NOVA_FS) += nova.o
> +
> +nova-y := bbuild.o inode.o rebuild.o super.o
> 
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