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152 lines
4.5 KiB
152 lines
4.5 KiB
# SPDX-License-Identifier: GPL-2.0-only |
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config F2FS_FS |
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tristate "F2FS filesystem support" |
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depends on BLOCK |
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select NLS |
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select CRYPTO |
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select CRYPTO_CRC32 |
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select F2FS_FS_XATTR if FS_ENCRYPTION |
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select FS_ENCRYPTION_ALGS if FS_ENCRYPTION |
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select FS_IOMAP |
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select LZ4_COMPRESS if F2FS_FS_LZ4 |
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select LZ4_DECOMPRESS if F2FS_FS_LZ4 |
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select LZ4HC_COMPRESS if F2FS_FS_LZ4HC |
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select LZO_COMPRESS if F2FS_FS_LZO |
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select LZO_DECOMPRESS if F2FS_FS_LZO |
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select ZSTD_COMPRESS if F2FS_FS_ZSTD |
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select ZSTD_DECOMPRESS if F2FS_FS_ZSTD |
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help |
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F2FS is based on Log-structured File System (LFS), which supports |
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versatile "flash-friendly" features. The design has been focused on |
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addressing the fundamental issues in LFS, which are snowball effect |
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of wandering tree and high cleaning overhead. |
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Since flash-based storages show different characteristics according to |
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the internal geometry or flash memory management schemes aka FTL, F2FS |
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and tools support various parameters not only for configuring on-disk |
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layout, but also for selecting allocation and cleaning algorithms. |
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If unsure, say N. |
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config F2FS_STAT_FS |
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bool "F2FS Status Information" |
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depends on F2FS_FS |
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default y |
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help |
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/sys/kernel/debug/f2fs/ contains information about all the partitions |
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mounted as f2fs. Each file shows the whole f2fs information. |
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/sys/kernel/debug/f2fs/status includes: |
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- major filesystem information managed by f2fs currently |
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- average SIT information about whole segments |
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- current memory footprint consumed by f2fs. |
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config F2FS_FS_XATTR |
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bool "F2FS extended attributes" |
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depends on F2FS_FS |
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default y |
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help |
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Extended attributes are name:value pairs associated with inodes by |
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the kernel or by users (see the attr(5) manual page for details). |
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If unsure, say N. |
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config F2FS_FS_POSIX_ACL |
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bool "F2FS Access Control Lists" |
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depends on F2FS_FS_XATTR |
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select FS_POSIX_ACL |
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default y |
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help |
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Posix Access Control Lists (ACLs) support permissions for users and |
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groups beyond the owner/group/world scheme. |
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If you don't know what Access Control Lists are, say N |
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config F2FS_FS_SECURITY |
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bool "F2FS Security Labels" |
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depends on F2FS_FS_XATTR |
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help |
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Security labels provide an access control facility to support Linux |
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Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO |
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Linux. This option enables an extended attribute handler for file |
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security labels in the f2fs filesystem, so that it requires enabling |
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the extended attribute support in advance. In particular you need this |
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option if you use the setcap command to assign initial process capabi- |
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lities to executables (the security.* extended attributes). |
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If you are not using a security module, say N. |
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config F2FS_CHECK_FS |
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bool "F2FS consistency checking feature" |
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depends on F2FS_FS |
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help |
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Enables BUG_ONs which check the filesystem consistency in runtime. |
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If you want to improve the performance, say N. |
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config F2FS_FAULT_INJECTION |
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bool "F2FS fault injection facility" |
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depends on F2FS_FS |
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help |
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Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on. |
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If unsure, say N. |
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config F2FS_FS_COMPRESSION |
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bool "F2FS compression feature" |
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depends on F2FS_FS |
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help |
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Enable filesystem-level compression on f2fs regular files, |
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multiple back-end compression algorithms are supported. |
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config F2FS_FS_LZO |
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bool "LZO compression support" |
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depends on F2FS_FS_COMPRESSION |
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default y |
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help |
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Support LZO compress algorithm, if unsure, say Y. |
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config F2FS_FS_LZORLE |
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bool "LZO-RLE compression support" |
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depends on F2FS_FS_LZO |
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default y |
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help |
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Support LZO-RLE compress algorithm, if unsure, say Y. |
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config F2FS_FS_LZ4 |
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bool "LZ4 compression support" |
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depends on F2FS_FS_COMPRESSION |
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default y |
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help |
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Support LZ4 compress algorithm, if unsure, say Y. |
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config F2FS_FS_LZ4HC |
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bool "LZ4HC compression support" |
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depends on F2FS_FS_LZ4 |
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default y |
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help |
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Support LZ4HC compress algorithm, LZ4HC has compatible on-disk |
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layout with LZ4, if unsure, say Y. |
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config F2FS_FS_ZSTD |
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bool "ZSTD compression support" |
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depends on F2FS_FS_COMPRESSION |
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default y |
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help |
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Support ZSTD compress algorithm, if unsure, say Y. |
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config F2FS_IOSTAT |
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bool "F2FS IO statistics information" |
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depends on F2FS_FS |
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default y |
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help |
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Support getting IO statistics through sysfs and printing out periodic |
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IO statistics tracepoint events. You have to turn on "iostat_enable" |
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sysfs node to enable this feature. |
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config F2FS_UNFAIR_RWSEM |
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bool "F2FS unfair rw_semaphore" |
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depends on F2FS_FS && BLK_CGROUP |
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help |
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Use unfair rw_semaphore, if system configured IO priority by block |
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cgroup.
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