···186source "fs/sysv/Kconfig"187source "fs/ufs/Kconfig"188source "fs/exofs/Kconfig"189-190-config NILFS2_FS191- tristate "NILFS2 file system support (EXPERIMENTAL)"192- depends on BLOCK && EXPERIMENTAL193- select CRC32194- help195- NILFS2 is a log-structured file system (LFS) supporting continuous196- snapshotting. In addition to versioning capability of the entire197- file system, users can even restore files mistakenly overwritten or198- destroyed just a few seconds ago. Since this file system can keep199- consistency like conventional LFS, it achieves quick recovery after200- system crashes.201-202- NILFS2 creates a number of checkpoints every few seconds or per203- synchronous write basis (unless there is no change). Users can204- select significant versions among continuously created checkpoints,205- and can change them into snapshots which will be preserved for long206- periods until they are changed back to checkpoints. Each207- snapshot is mountable as a read-only file system concurrently with208- its writable mount, and this feature is convenient for online backup.209-210- Some features including atime, extended attributes, and POSIX ACLs,211- are not supported yet.212-213- To compile this file system support as a module, choose M here: the214- module will be called nilfs2. If unsure, say N.215216endif # MISC_FILESYSTEMS217
···1+config NILFS2_FS2+ tristate "NILFS2 file system support (EXPERIMENTAL)"3+ depends on BLOCK && EXPERIMENTAL4+ select CRC325+ help6+ NILFS2 is a log-structured file system (LFS) supporting continuous7+ snapshotting. In addition to versioning capability of the entire8+ file system, users can even restore files mistakenly overwritten or9+ destroyed just a few seconds ago. Since this file system can keep10+ consistency like conventional LFS, it achieves quick recovery after11+ system crashes.12+13+ NILFS2 creates a number of checkpoints every few seconds or per14+ synchronous write basis (unless there is no change). Users can15+ select significant versions among continuously created checkpoints,16+ and can change them into snapshots which will be preserved for long17+ periods until they are changed back to checkpoints. Each18+ snapshot is mountable as a read-only file system concurrently with19+ its writable mount, and this feature is convenient for online backup.20+21+ Some features including atime, extended attributes, and POSIX ACLs,22+ are not supported yet.23+24+ To compile this file system support as a module, choose M here: the25+ module will be called nilfs2. If unsure, say N.