1a14d5393SJaegeuk Kimconfig F2FS_FS 2a14d5393SJaegeuk Kim tristate "F2FS filesystem support (EXPERIMENTAL)" 3573ea5fcSJaegeuk Kim depends on BLOCK 4a14d5393SJaegeuk Kim help 5a14d5393SJaegeuk Kim F2FS is based on Log-structured File System (LFS), which supports 6a14d5393SJaegeuk Kim versatile "flash-friendly" features. The design has been focused on 7a14d5393SJaegeuk Kim addressing the fundamental issues in LFS, which are snowball effect 8a14d5393SJaegeuk Kim of wandering tree and high cleaning overhead. 9a14d5393SJaegeuk Kim 10a14d5393SJaegeuk Kim Since flash-based storages show different characteristics according to 11a14d5393SJaegeuk Kim the internal geometry or flash memory management schemes aka FTL, F2FS 12a14d5393SJaegeuk Kim and tools support various parameters not only for configuring on-disk 13a14d5393SJaegeuk Kim layout, but also for selecting allocation and cleaning algorithms. 14a14d5393SJaegeuk Kim 15a14d5393SJaegeuk Kim If unsure, say N. 16a14d5393SJaegeuk Kim 17a14d5393SJaegeuk Kimconfig F2FS_STAT_FS 18a14d5393SJaegeuk Kim bool "F2FS Status Information" 19a14d5393SJaegeuk Kim depends on F2FS_FS && DEBUG_FS 20a14d5393SJaegeuk Kim default y 21a14d5393SJaegeuk Kim help 22a14d5393SJaegeuk Kim /sys/kernel/debug/f2fs/ contains information about all the partitions 23a14d5393SJaegeuk Kim mounted as f2fs. Each file shows the whole f2fs information. 24a14d5393SJaegeuk Kim 25a14d5393SJaegeuk Kim /sys/kernel/debug/f2fs/status includes: 26a14d5393SJaegeuk Kim - major file system information managed by f2fs currently 27a14d5393SJaegeuk Kim - average SIT information about whole segments 28a14d5393SJaegeuk Kim - current memory footprint consumed by f2fs. 29a14d5393SJaegeuk Kim 30a14d5393SJaegeuk Kimconfig F2FS_FS_XATTR 31a14d5393SJaegeuk Kim bool "F2FS extended attributes" 32a14d5393SJaegeuk Kim depends on F2FS_FS 33a14d5393SJaegeuk Kim default y 34a14d5393SJaegeuk Kim help 35a14d5393SJaegeuk Kim Extended attributes are name:value pairs associated with inodes by 36a14d5393SJaegeuk Kim the kernel or by users (see the attr(5) manual page, or visit 37a14d5393SJaegeuk Kim <http://acl.bestbits.at/> for details). 38a14d5393SJaegeuk Kim 39a14d5393SJaegeuk Kim If unsure, say N. 40a14d5393SJaegeuk Kim 41a14d5393SJaegeuk Kimconfig F2FS_FS_POSIX_ACL 42a14d5393SJaegeuk Kim bool "F2FS Access Control Lists" 43a14d5393SJaegeuk Kim depends on F2FS_FS_XATTR 44a14d5393SJaegeuk Kim select FS_POSIX_ACL 45a14d5393SJaegeuk Kim default y 46a14d5393SJaegeuk Kim help 47a14d5393SJaegeuk Kim Posix Access Control Lists (ACLs) support permissions for users and 48a14d5393SJaegeuk Kim gourps beyond the owner/group/world scheme. 49a14d5393SJaegeuk Kim 50a14d5393SJaegeuk Kim To learn more about Access Control Lists, visit the POSIX ACLs for 51a14d5393SJaegeuk Kim Linux website <http://acl.bestbits.at/>. 52a14d5393SJaegeuk Kim 53a14d5393SJaegeuk Kim If you don't know what Access Control Lists are, say N 548ae8f162SJaegeuk Kim 558ae8f162SJaegeuk Kimconfig F2FS_FS_SECURITY 568ae8f162SJaegeuk Kim bool "F2FS Security Labels" 578ae8f162SJaegeuk Kim depends on F2FS_FS_XATTR 588ae8f162SJaegeuk Kim help 598ae8f162SJaegeuk Kim Security labels provide an access control facility to support Linux 608ae8f162SJaegeuk Kim Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO 618ae8f162SJaegeuk Kim Linux. This option enables an extended attribute handler for file 628ae8f162SJaegeuk Kim security labels in the f2fs filesystem, so that it requires enabling 638ae8f162SJaegeuk Kim the extended attribute support in advance. 648ae8f162SJaegeuk Kim 658ae8f162SJaegeuk Kim If you are not using a security module, say N. 66