1# SPDX-License-Identifier: GPL-2.0-only 2config F2FS_FS 3 tristate "F2FS filesystem support" 4 depends on BLOCK 5 select CRYPTO 6 select CRYPTO_CRC32 7 select F2FS_FS_XATTR if FS_ENCRYPTION 8 help 9 F2FS is based on Log-structured File System (LFS), which supports 10 versatile "flash-friendly" features. The design has been focused on 11 addressing the fundamental issues in LFS, which are snowball effect 12 of wandering tree and high cleaning overhead. 13 14 Since flash-based storages show different characteristics according to 15 the internal geometry or flash memory management schemes aka FTL, F2FS 16 and tools support various parameters not only for configuring on-disk 17 layout, but also for selecting allocation and cleaning algorithms. 18 19 If unsure, say N. 20 21config F2FS_STAT_FS 22 bool "F2FS Status Information" 23 depends on F2FS_FS && DEBUG_FS 24 default y 25 help 26 /sys/kernel/debug/f2fs/ contains information about all the partitions 27 mounted as f2fs. Each file shows the whole f2fs information. 28 29 /sys/kernel/debug/f2fs/status includes: 30 - major filesystem information managed by f2fs currently 31 - average SIT information about whole segments 32 - current memory footprint consumed by f2fs. 33 34config F2FS_FS_XATTR 35 bool "F2FS extended attributes" 36 depends on F2FS_FS 37 default y 38 help 39 Extended attributes are name:value pairs associated with inodes by 40 the kernel or by users (see the attr(5) manual page for details). 41 42 If unsure, say N. 43 44config F2FS_FS_POSIX_ACL 45 bool "F2FS Access Control Lists" 46 depends on F2FS_FS_XATTR 47 select FS_POSIX_ACL 48 default y 49 help 50 Posix Access Control Lists (ACLs) support permissions for users and 51 groups beyond the owner/group/world scheme. 52 53 If you don't know what Access Control Lists are, say N 54 55config F2FS_FS_SECURITY 56 bool "F2FS Security Labels" 57 depends on F2FS_FS_XATTR 58 help 59 Security labels provide an access control facility to support Linux 60 Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO 61 Linux. This option enables an extended attribute handler for file 62 security labels in the f2fs filesystem, so that it requires enabling 63 the extended attribute support in advance. 64 65 If you are not using a security module, say N. 66 67config F2FS_CHECK_FS 68 bool "F2FS consistency checking feature" 69 depends on F2FS_FS 70 help 71 Enables BUG_ONs which check the filesystem consistency in runtime. 72 73 If you want to improve the performance, say N. 74 75config F2FS_IO_TRACE 76 bool "F2FS IO tracer" 77 depends on F2FS_FS 78 depends on FUNCTION_TRACER 79 help 80 F2FS IO trace is based on a function trace, which gathers process 81 information and block IO patterns in the filesystem level. 82 83 If unsure, say N. 84 85config F2FS_FAULT_INJECTION 86 bool "F2FS fault injection facility" 87 depends on F2FS_FS 88 help 89 Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on. 90 91 If unsure, say N. 92