| Jaegeuk Kim | a14d5393 | 2012-11-02 17:25:27 +0900 | [diff] [blame^] | 1 | config F2FS_FS |
| 2 | tristate "F2FS filesystem support (EXPERIMENTAL)" |
| 3 | help |
| 4 | F2FS is based on Log-structured File System (LFS), which supports |
| 5 | versatile "flash-friendly" features. The design has been focused on |
| 6 | addressing the fundamental issues in LFS, which are snowball effect |
| 7 | of wandering tree and high cleaning overhead. |
| 8 | |
| 9 | Since flash-based storages show different characteristics according to |
| 10 | the internal geometry or flash memory management schemes aka FTL, F2FS |
| 11 | and tools support various parameters not only for configuring on-disk |
| 12 | layout, but also for selecting allocation and cleaning algorithms. |
| 13 | |
| 14 | If unsure, say N. |
| 15 | |
| 16 | config F2FS_STAT_FS |
| 17 | bool "F2FS Status Information" |
| 18 | depends on F2FS_FS && DEBUG_FS |
| 19 | default y |
| 20 | help |
| 21 | /sys/kernel/debug/f2fs/ contains information about all the partitions |
| 22 | mounted as f2fs. Each file shows the whole f2fs information. |
| 23 | |
| 24 | /sys/kernel/debug/f2fs/status includes: |
| 25 | - major file system information managed by f2fs currently |
| 26 | - average SIT information about whole segments |
| 27 | - current memory footprint consumed by f2fs. |
| 28 | |
| 29 | config F2FS_FS_XATTR |
| 30 | bool "F2FS extended attributes" |
| 31 | depends on F2FS_FS |
| 32 | default y |
| 33 | help |
| 34 | Extended attributes are name:value pairs associated with inodes by |
| 35 | the kernel or by users (see the attr(5) manual page, or visit |
| 36 | <http://acl.bestbits.at/> for details). |
| 37 | |
| 38 | If unsure, say N. |
| 39 | |
| 40 | config F2FS_FS_POSIX_ACL |
| 41 | bool "F2FS Access Control Lists" |
| 42 | depends on F2FS_FS_XATTR |
| 43 | select FS_POSIX_ACL |
| 44 | default y |
| 45 | help |
| 46 | Posix Access Control Lists (ACLs) support permissions for users and |
| 47 | gourps beyond the owner/group/world scheme. |
| 48 | |
| 49 | To learn more about Access Control Lists, visit the POSIX ACLs for |
| 50 | Linux website <http://acl.bestbits.at/>. |
| 51 | |
| 52 | If you don't know what Access Control Lists are, say N |