1# SPDX-License-Identifier: GPL-2.0-only 2config F2FS_FS 3 tristate "F2FS filesystem support" 4 depends on BLOCK 5 select NLS 6 select CRYPTO 7 select CRYPTO_CRC32 8 select F2FS_FS_XATTR if FS_ENCRYPTION 9 select FS_ENCRYPTION_ALGS if FS_ENCRYPTION 10 select FS_IOMAP 11 select LZ4_COMPRESS if F2FS_FS_LZ4 12 select LZ4_DECOMPRESS if F2FS_FS_LZ4 13 select LZ4HC_COMPRESS if F2FS_FS_LZ4HC 14 select LZO_COMPRESS if F2FS_FS_LZO 15 select LZO_DECOMPRESS if F2FS_FS_LZO 16 select ZSTD_COMPRESS if F2FS_FS_ZSTD 17 select ZSTD_DECOMPRESS if F2FS_FS_ZSTD 18 help 19 F2FS is based on Log-structured File System (LFS), which supports 20 versatile "flash-friendly" features. The design has been focused on 21 addressing the fundamental issues in LFS, which are snowball effect 22 of wandering tree and high cleaning overhead. 23 24 Since flash-based storages show different characteristics according to 25 the internal geometry or flash memory management schemes aka FTL, F2FS 26 and tools support various parameters not only for configuring on-disk 27 layout, but also for selecting allocation and cleaning algorithms. 28 29 If unsure, say N. 30 31config F2FS_STAT_FS 32 bool "F2FS Status Information" 33 depends on F2FS_FS 34 default y 35 help 36 /sys/kernel/debug/f2fs/ contains information about all the partitions 37 mounted as f2fs. Each file shows the whole f2fs information. 38 39 /sys/kernel/debug/f2fs/status includes: 40 - major filesystem information managed by f2fs currently 41 - average SIT information about whole segments 42 - current memory footprint consumed by f2fs. 43 44config F2FS_FS_XATTR 45 bool "F2FS extended attributes" 46 depends on F2FS_FS 47 default y 48 help 49 Extended attributes are name:value pairs associated with inodes by 50 the kernel or by users (see the attr(5) manual page for details). 51 52 If unsure, say N. 53 54config F2FS_FS_POSIX_ACL 55 bool "F2FS Access Control Lists" 56 depends on F2FS_FS_XATTR 57 select FS_POSIX_ACL 58 default y 59 help 60 Posix Access Control Lists (ACLs) support permissions for users and 61 groups beyond the owner/group/world scheme. 62 63 If you don't know what Access Control Lists are, say N 64 65config F2FS_FS_SECURITY 66 bool "F2FS Security Labels" 67 depends on F2FS_FS_XATTR 68 help 69 Security labels provide an access control facility to support Linux 70 Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO 71 Linux. This option enables an extended attribute handler for file 72 security labels in the f2fs filesystem, so that it requires enabling 73 the extended attribute support in advance. In particular you need this 74 option if you use the setcap command to assign initial process capabi- 75 lities to executables (the security.* extended attributes). 76 77 If you are not using a security module, say N. 78 79config F2FS_CHECK_FS 80 bool "F2FS consistency checking feature" 81 depends on F2FS_FS 82 help 83 Enables BUG_ONs which check the filesystem consistency in runtime. 84 85 If you want to improve the performance, say N. 86 87config F2FS_FAULT_INJECTION 88 bool "F2FS fault injection facility" 89 depends on F2FS_FS 90 help 91 Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on. 92 93 If unsure, say N. 94 95config F2FS_FS_COMPRESSION 96 bool "F2FS compression feature" 97 depends on F2FS_FS 98 help 99 Enable filesystem-level compression on f2fs regular files, 100 multiple back-end compression algorithms are supported. 101 102config F2FS_FS_LZO 103 bool "LZO compression support" 104 depends on F2FS_FS_COMPRESSION 105 default y 106 help 107 Support LZO compress algorithm, if unsure, say Y. 108 109config F2FS_FS_LZORLE 110 bool "LZO-RLE compression support" 111 depends on F2FS_FS_LZO 112 default y 113 help 114 Support LZO-RLE compress algorithm, if unsure, say Y. 115 116config F2FS_FS_LZ4 117 bool "LZ4 compression support" 118 depends on F2FS_FS_COMPRESSION 119 default y 120 help 121 Support LZ4 compress algorithm, if unsure, say Y. 122 123config F2FS_FS_LZ4HC 124 bool "LZ4HC compression support" 125 depends on F2FS_FS_LZ4 126 default y 127 help 128 Support LZ4HC compress algorithm, LZ4HC has compatible on-disk 129 layout with LZ4, if unsure, say Y. 130 131config F2FS_FS_ZSTD 132 bool "ZSTD compression support" 133 depends on F2FS_FS_COMPRESSION 134 default y 135 help 136 Support ZSTD compress algorithm, if unsure, say Y. 137 138config F2FS_IOSTAT 139 bool "F2FS IO statistics information" 140 depends on F2FS_FS 141 default y 142 help 143 Support getting IO statistics through sysfs and printing out periodic 144 IO statistics tracepoint events. You have to turn on "iostat_enable" 145 sysfs node to enable this feature. 146 147config F2FS_UNFAIR_RWSEM 148 bool "F2FS unfair rw_semaphore" 149 depends on F2FS_FS && BLK_CGROUP 150 help 151 Use unfair rw_semaphore, if system configured IO priority by block 152 cgroup. 153