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+config ADK_KPACKAGE_KMOD_AUFS_FS
+ prompt "Aufs (Advanced multi layered unification filesystem) support"
+ tristate
+ select ADK_KERNEL_EXPERIMENTAL
+ select FWRT_KPACKAGE_KMOD_EXPORTFS if ADK_KERNEL_AUFS_EXPORT
+ help
+ Aufs is a stackable unification filesystem such as Unionfs,
+ which unifies several directories and provides a merged single
+ directory.
+ In the early days, aufs was entirely re-designed and
+ re-implemented Unionfs Version 1.x series. Introducing many
+ original ideas, approaches and improvements, it becomes totally
+ different from Unionfs while keeping the basic features.
+
+if ADK_KPACKAGE_KMOD_AUFS_FS
+
+choice
+ boolean "Maximum number of branches"
+ default ADK_KERNEL_AUFS_BRANCH_MAX_127
+ help
+ Specifies the maximum number of branches (or member directories)
+ in a single aufs. The larger value consumes more system
+ resources and has a minor impact to performance.
+
+config ADK_KERNEL_AUFS_BRANCH_MAX_127
+ bool "127"
+
+config ADK_KERNEL_AUFS_BRANCH_MAX_511
+ bool "511"
+
+config ADK_KERNEL_AUFS_BRANCH_MAX_1023
+ bool "1023"
+
+config ADK_KERNEL_AUFS_BRANCH_MAX_32767
+ bool "32767"
+
+endchoice
+
+config ADK_KERNEL_AUFS_HINOTIFY
+ bool "Use inotify to detect actions on a branch"
+ select ADK_KERNEL_INOTIFY
+ help
+ If you want to modify files on branches directly, eg. bypassing aufs,
+ and want aufs to detect the changes of them fully, then enable this
+ option and use 'udba=inotify' mount option.
+ It will have a negative impact to the performance.
+ See detail in aufs.5.
+
+config ADK_KERNEL_AUFS_EXPORT
+ bool "NFS-exportable aufs"
+ help
+ If you want to export your mounted aufs via NFS, then enable this
+ option. There are several requirements for this configuration.
+ See detail in aufs.5.
+
+config ADK_KERNEL_AUFS_SHWH
+ bool "Show whiteouts"
+ help
+ If you want to make the whiteouts in aufs visible, then enable
+ this option and specify 'shwh' mount option. Although it may
+ sounds like philosophy or something, but in technically it
+ simply shows the name of whiteout with keeping its behaviour.
+
+config ADK_KERNEL_AUFS_BR_RAMFS
+ bool "Ramfs (initramfs/rootfs) as an aufs branch"
+ help
+ If you want to use ramfs as an aufs branch fs, then enable this
+ Generally tmpfs is recommended.
+ hibited them to be a branch fs by default, because
+ s becomes unusable after switch_root or something
+ y. If you sets initramfs as an aufs branch and boot your
+ y switch_root, you will meet a problem easily since the
+ initramfs may be inaccessible.
+ ou are going to use ramfs as an aufs branch fs without
+ oot or something, leave it N.
+
+config ADK_KERNEL_AUFS_BR_FUSE
+ bool "Fuse fs as an aufs branch"
+ select ADK_KERNEL_AUFS_POLL
+ select ADK_KPACKAGE_KMOD_FUSE_FS
+ help
+ If you want to use fuse-based userspace filesystem as an aufs
+ branch fs, then enable this option.
+ It implements the internal poll(2) operation which is
+ implemented by fuse only (curretnly).
+
+config ADK_KERNEL_AUFS_DEBUG
+ bool "Debug aufs"
+ help
+ Enable this to compile aufs internal debug code.
+ It will have a negative impact to the performance.
+
+endif