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authorDave Airlie <airlied@redhat.com>2009-08-20 13:38:04 +1000
committerDave Airlie <airlied@redhat.com>2009-08-20 13:38:04 +1000
commit51c8b4071d84d46cc100baa5931ad06b2a823c95 (patch)
tree098cf9d41ce1c548d922708a770a9efe35e434df /fs/nilfs2/Kconfig
parenta987fcaa805fcb24ba885c2e29fd4fdb6816f08f (diff)
parent6c30c53fd5ae6a99a23ad78e90c428d2c8ffb07f (diff)
Merge Linus master to drm-next
linux-next conflict reported needed resolution. Conflicts: drivers/gpu/drm/drm_crtc.c drivers/gpu/drm/drm_edid.c drivers/gpu/drm/i915/intel_sdvo.c drivers/gpu/drm/radeon/radeon_ttm.c drivers/gpu/drm/ttm/ttm_bo.c
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diff --git a/fs/nilfs2/Kconfig b/fs/nilfs2/Kconfig
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+config NILFS2_FS
+ tristate "NILFS2 file system support (EXPERIMENTAL)"
+ depends on BLOCK && EXPERIMENTAL
+ select CRC32
+ help
+ NILFS2 is a log-structured file system (LFS) supporting continuous
+ snapshotting. In addition to versioning capability of the entire
+ file system, users can even restore files mistakenly overwritten or
+ destroyed just a few seconds ago. Since this file system can keep
+ consistency like conventional LFS, it achieves quick recovery after
+ system crashes.
+
+ NILFS2 creates a number of checkpoints every few seconds or per
+ synchronous write basis (unless there is no change). Users can
+ select significant versions among continuously created checkpoints,
+ and can change them into snapshots which will be preserved for long
+ periods until they are changed back to checkpoints. Each
+ snapshot is mountable as a read-only file system concurrently with
+ its writable mount, and this feature is convenient for online backup.
+
+ Some features including atime, extended attributes, and POSIX ACLs,
+ are not supported yet.
+
+ To compile this file system support as a module, choose M here: the
+ module will be called nilfs2. If unsure, say N.