ec8f24b7fa
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
26 lines
1.2 KiB
Plaintext
26 lines
1.2 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
config NILFS2_FS
|
|
tristate "NILFS2 file system support"
|
|
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.
|