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Linux/fs/nilfs2/Kconfig

  1 config NILFS2_FS
  2         tristate "NILFS2 file system support"
  3         select CRC32
  4         help
  5           NILFS2 is a log-structured file system (LFS) supporting continuous
  6           snapshotting.  In addition to versioning capability of the entire
  7           file system, users can even restore files mistakenly overwritten or
  8           destroyed just a few seconds ago.  Since this file system can keep
  9           consistency like conventional LFS, it achieves quick recovery after
 10           system crashes.
 11 
 12           NILFS2 creates a number of checkpoints every few seconds or per
 13           synchronous write basis (unless there is no change).  Users can
 14           select significant versions among continuously created checkpoints,
 15           and can change them into snapshots which will be preserved for long
 16           periods until they are changed back to checkpoints.  Each
 17           snapshot is mountable as a read-only file system concurrently with
 18           its writable mount, and this feature is convenient for online backup.
 19 
 20           Some features including atime, extended attributes, and POSIX ACLs,
 21           are not supported yet.
 22 
 23           To compile this file system support as a module, choose M here: the
 24           module will be called nilfs2.  If unsure, say N.

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