1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyunconfig F2FS_FS 3*4882a593Smuzhiyun tristate "F2FS filesystem support" 4*4882a593Smuzhiyun depends on BLOCK 5*4882a593Smuzhiyun select NLS 6*4882a593Smuzhiyun select CRYPTO 7*4882a593Smuzhiyun select CRYPTO_CRC32 8*4882a593Smuzhiyun select F2FS_FS_XATTR if FS_ENCRYPTION 9*4882a593Smuzhiyun select FS_ENCRYPTION_ALGS if FS_ENCRYPTION 10*4882a593Smuzhiyun select LZ4_COMPRESS if F2FS_FS_LZ4 11*4882a593Smuzhiyun select LZ4_DECOMPRESS if F2FS_FS_LZ4 12*4882a593Smuzhiyun select LZ4HC_COMPRESS if F2FS_FS_LZ4HC 13*4882a593Smuzhiyun select LZO_COMPRESS if F2FS_FS_LZO 14*4882a593Smuzhiyun select LZO_DECOMPRESS if F2FS_FS_LZO 15*4882a593Smuzhiyun select ZSTD_COMPRESS if F2FS_FS_ZSTD 16*4882a593Smuzhiyun select ZSTD_DECOMPRESS if F2FS_FS_ZSTD 17*4882a593Smuzhiyun help 18*4882a593Smuzhiyun F2FS is based on Log-structured File System (LFS), which supports 19*4882a593Smuzhiyun versatile "flash-friendly" features. The design has been focused on 20*4882a593Smuzhiyun addressing the fundamental issues in LFS, which are snowball effect 21*4882a593Smuzhiyun of wandering tree and high cleaning overhead. 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun Since flash-based storages show different characteristics according to 24*4882a593Smuzhiyun the internal geometry or flash memory management schemes aka FTL, F2FS 25*4882a593Smuzhiyun and tools support various parameters not only for configuring on-disk 26*4882a593Smuzhiyun layout, but also for selecting allocation and cleaning algorithms. 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun If unsure, say N. 29*4882a593Smuzhiyun 30*4882a593Smuzhiyunconfig F2FS_STAT_FS 31*4882a593Smuzhiyun bool "F2FS Status Information" 32*4882a593Smuzhiyun depends on F2FS_FS 33*4882a593Smuzhiyun default y 34*4882a593Smuzhiyun help 35*4882a593Smuzhiyun /sys/kernel/debug/f2fs/ contains information about all the partitions 36*4882a593Smuzhiyun mounted as f2fs. Each file shows the whole f2fs information. 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun /sys/kernel/debug/f2fs/status includes: 39*4882a593Smuzhiyun - major filesystem information managed by f2fs currently 40*4882a593Smuzhiyun - average SIT information about whole segments 41*4882a593Smuzhiyun - current memory footprint consumed by f2fs. 42*4882a593Smuzhiyun 43*4882a593Smuzhiyunconfig F2FS_FS_XATTR 44*4882a593Smuzhiyun bool "F2FS extended attributes" 45*4882a593Smuzhiyun depends on F2FS_FS 46*4882a593Smuzhiyun default y 47*4882a593Smuzhiyun help 48*4882a593Smuzhiyun Extended attributes are name:value pairs associated with inodes by 49*4882a593Smuzhiyun the kernel or by users (see the attr(5) manual page for details). 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun If unsure, say N. 52*4882a593Smuzhiyun 53*4882a593Smuzhiyunconfig F2FS_FS_POSIX_ACL 54*4882a593Smuzhiyun bool "F2FS Access Control Lists" 55*4882a593Smuzhiyun depends on F2FS_FS_XATTR 56*4882a593Smuzhiyun select FS_POSIX_ACL 57*4882a593Smuzhiyun default y 58*4882a593Smuzhiyun help 59*4882a593Smuzhiyun Posix Access Control Lists (ACLs) support permissions for users and 60*4882a593Smuzhiyun groups beyond the owner/group/world scheme. 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun If you don't know what Access Control Lists are, say N 63*4882a593Smuzhiyun 64*4882a593Smuzhiyunconfig F2FS_FS_SECURITY 65*4882a593Smuzhiyun bool "F2FS Security Labels" 66*4882a593Smuzhiyun depends on F2FS_FS_XATTR 67*4882a593Smuzhiyun help 68*4882a593Smuzhiyun Security labels provide an access control facility to support Linux 69*4882a593Smuzhiyun Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO 70*4882a593Smuzhiyun Linux. This option enables an extended attribute handler for file 71*4882a593Smuzhiyun security labels in the f2fs filesystem, so that it requires enabling 72*4882a593Smuzhiyun the extended attribute support in advance. In particular you need this 73*4882a593Smuzhiyun option if you use the setcap command to assign initial process capabi- 74*4882a593Smuzhiyun lities to executables (the security.* extended attributes). 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun If you are not using a security module, say N. 77*4882a593Smuzhiyun 78*4882a593Smuzhiyunconfig F2FS_CHECK_FS 79*4882a593Smuzhiyun bool "F2FS consistency checking feature" 80*4882a593Smuzhiyun depends on F2FS_FS 81*4882a593Smuzhiyun help 82*4882a593Smuzhiyun Enables BUG_ONs which check the filesystem consistency in runtime. 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun If you want to improve the performance, say N. 85*4882a593Smuzhiyun 86*4882a593Smuzhiyunconfig F2FS_FAULT_INJECTION 87*4882a593Smuzhiyun bool "F2FS fault injection facility" 88*4882a593Smuzhiyun depends on F2FS_FS 89*4882a593Smuzhiyun help 90*4882a593Smuzhiyun Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on. 91*4882a593Smuzhiyun 92*4882a593Smuzhiyun If unsure, say N. 93*4882a593Smuzhiyun 94*4882a593Smuzhiyunconfig F2FS_FS_COMPRESSION 95*4882a593Smuzhiyun bool "F2FS compression feature" 96*4882a593Smuzhiyun depends on F2FS_FS 97*4882a593Smuzhiyun help 98*4882a593Smuzhiyun Enable filesystem-level compression on f2fs regular files, 99*4882a593Smuzhiyun multiple back-end compression algorithms are supported. 100*4882a593Smuzhiyun 101*4882a593Smuzhiyunconfig F2FS_FS_LZO 102*4882a593Smuzhiyun bool "LZO compression support" 103*4882a593Smuzhiyun depends on F2FS_FS_COMPRESSION 104*4882a593Smuzhiyun default y 105*4882a593Smuzhiyun help 106*4882a593Smuzhiyun Support LZO compress algorithm, if unsure, say Y. 107*4882a593Smuzhiyun 108*4882a593Smuzhiyunconfig F2FS_FS_LZ4 109*4882a593Smuzhiyun bool "LZ4 compression support" 110*4882a593Smuzhiyun depends on F2FS_FS_COMPRESSION 111*4882a593Smuzhiyun default y 112*4882a593Smuzhiyun help 113*4882a593Smuzhiyun Support LZ4 compress algorithm, if unsure, say Y. 114*4882a593Smuzhiyun 115*4882a593Smuzhiyunconfig F2FS_FS_LZ4HC 116*4882a593Smuzhiyun bool "LZ4HC compression support" 117*4882a593Smuzhiyun depends on F2FS_FS_COMPRESSION 118*4882a593Smuzhiyun depends on F2FS_FS_LZ4 119*4882a593Smuzhiyun default y 120*4882a593Smuzhiyun help 121*4882a593Smuzhiyun Support LZ4HC compress algorithm, LZ4HC has compatible on-disk 122*4882a593Smuzhiyun layout with LZ4, if unsure, say Y. 123*4882a593Smuzhiyun 124*4882a593Smuzhiyunconfig F2FS_FS_ZSTD 125*4882a593Smuzhiyun bool "ZSTD compression support" 126*4882a593Smuzhiyun depends on F2FS_FS_COMPRESSION 127*4882a593Smuzhiyun default y 128*4882a593Smuzhiyun help 129*4882a593Smuzhiyun Support ZSTD compress algorithm, if unsure, say Y. 130*4882a593Smuzhiyun 131*4882a593Smuzhiyunconfig F2FS_FS_LZORLE 132*4882a593Smuzhiyun bool "LZO-RLE compression support" 133*4882a593Smuzhiyun depends on F2FS_FS_COMPRESSION 134*4882a593Smuzhiyun depends on F2FS_FS_LZO 135*4882a593Smuzhiyun default y 136*4882a593Smuzhiyun help 137*4882a593Smuzhiyun Support LZO-RLE compress algorithm, if unsure, say Y. 138