1config F2FS_FS 2 tristate "F2FS filesystem support" 3 depends on BLOCK 4 select CRYPTO 5 select CRYPTO_CRC32 6 select F2FS_FS_XATTR if FS_ENCRYPTION 7 help 8 F2FS is based on Log-structured File System (LFS), which supports 9 versatile "flash-friendly" features. The design has been focused on 10 addressing the fundamental issues in LFS, which are snowball effect 11 of wandering tree and high cleaning overhead. 12 13 Since flash-based storages show different characteristics according to 14 the internal geometry or flash memory management schemes aka FTL, F2FS 15 and tools support various parameters not only for configuring on-disk 16 layout, but also for selecting allocation and cleaning algorithms. 17 18 If unsure, say N. 19 20config F2FS_STAT_FS 21 bool "F2FS Status Information" 22 depends on F2FS_FS && DEBUG_FS 23 default y 24 help 25 /sys/kernel/debug/f2fs/ contains information about all the partitions 26 mounted as f2fs. Each file shows the whole f2fs information. 27 28 /sys/kernel/debug/f2fs/status includes: 29 - major filesystem information managed by f2fs currently 30 - average SIT information about whole segments 31 - current memory footprint consumed by f2fs. 32 33config F2FS_FS_XATTR 34 bool "F2FS extended attributes" 35 depends on F2FS_FS 36 default y 37 help 38 Extended attributes are name:value pairs associated with inodes by 39 the kernel or by users (see the attr(5) manual page for details). 40 41 If unsure, say N. 42 43config F2FS_FS_POSIX_ACL 44 bool "F2FS Access Control Lists" 45 depends on F2FS_FS_XATTR 46 select FS_POSIX_ACL 47 default y 48 help 49 Posix Access Control Lists (ACLs) support permissions for users and 50 groups beyond the owner/group/world scheme. 51 52 If you don't know what Access Control Lists are, say N 53 54config F2FS_FS_SECURITY 55 bool "F2FS Security Labels" 56 depends on F2FS_FS_XATTR 57 help 58 Security labels provide an access control facility to support Linux 59 Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO 60 Linux. This option enables an extended attribute handler for file 61 security labels in the f2fs filesystem, so that it requires enabling 62 the extended attribute support in advance. 63 64 If you are not using a security module, say N. 65 66config F2FS_CHECK_FS 67 bool "F2FS consistency checking feature" 68 depends on F2FS_FS 69 help 70 Enables BUG_ONs which check the filesystem consistency in runtime. 71 72 If you want to improve the performance, say N. 73 74config F2FS_IO_TRACE 75 bool "F2FS IO tracer" 76 depends on F2FS_FS 77 depends on FUNCTION_TRACER 78 help 79 F2FS IO trace is based on a function trace, which gathers process 80 information and block IO patterns in the filesystem level. 81 82 If unsure, say N. 83 84config F2FS_FAULT_INJECTION 85 bool "F2FS fault injection facility" 86 depends on F2FS_FS 87 help 88 Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on. 89 90 If unsure, say N. 91