1config F2FS_FS
  2	tristate "F2FS filesystem support"
  3	depends on BLOCK
  4	select CRYPTO
  5	select CRYPTO_CRC32
  6	help
  7	  F2FS is based on Log-structured File System (LFS), which supports
  8	  versatile "flash-friendly" features. The design has been focused on
  9	  addressing the fundamental issues in LFS, which are snowball effect
 10	  of wandering tree and high cleaning overhead.
 11
 12	  Since flash-based storages show different characteristics according to
 13	  the internal geometry or flash memory management schemes aka FTL, F2FS
 14	  and tools support various parameters not only for configuring on-disk
 15	  layout, but also for selecting allocation and cleaning algorithms.
 16
 17	  If unsure, say N.
 18
 19config F2FS_STAT_FS
 20	bool "F2FS Status Information"
 21	depends on F2FS_FS && DEBUG_FS
 22	default y
 23	help
 24	  /sys/kernel/debug/f2fs/ contains information about all the partitions
 25	  mounted as f2fs. Each file shows the whole f2fs information.
 26
 27	  /sys/kernel/debug/f2fs/status includes:
 28	    - major filesystem information managed by f2fs currently
 29	    - average SIT information about whole segments
 30	    - current memory footprint consumed by f2fs.
 31
 32config F2FS_FS_XATTR
 33	bool "F2FS extended attributes"
 34	depends on F2FS_FS
 35	default y
 36	help
 37	  Extended attributes are name:value pairs associated with inodes by
 38	  the kernel or by users (see the attr(5) manual page, or visit
 39	  <http://acl.bestbits.at/> 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	  To learn more about Access Control Lists, visit the POSIX ACLs for
 53	  Linux website <http://acl.bestbits.at/>.
 54
 55	  If you don't know what Access Control Lists are, say N
 56
 57config F2FS_FS_SECURITY
 58	bool "F2FS Security Labels"
 59	depends on F2FS_FS_XATTR
 60	help
 61	  Security labels provide an access control facility to support Linux
 62	  Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
 63	  Linux. This option enables an extended attribute handler for file
 64	  security labels in the f2fs filesystem, so that it requires enabling
 65	  the extended attribute support in advance.
 66
 67	  If you are not using a security module, say N.
 68
 69config F2FS_CHECK_FS
 70	bool "F2FS consistency checking feature"
 71	depends on F2FS_FS
 72	help
 73	  Enables BUG_ONs which check the filesystem consistency in runtime.
 74
 75	  If you want to improve the performance, say N.
 76
 77config F2FS_FS_ENCRYPTION
 78	bool "F2FS Encryption"
 79	depends on F2FS_FS
 80	depends on F2FS_FS_XATTR
 81	select FS_ENCRYPTION
 82	help
 83	  Enable encryption of f2fs files and directories.  This
 84	  feature is similar to ecryptfs, but it is more memory
 85	  efficient since it avoids caching the encrypted and
 86	  decrypted pages in the page cache.
 87
 88config F2FS_IO_TRACE
 89	bool "F2FS IO tracer"
 90	depends on F2FS_FS
 91	depends on FUNCTION_TRACER
 92	help
 93	  F2FS IO trace is based on a function trace, which gathers process
 94	  information and block IO patterns in the filesystem level.
 95
 96	  If unsure, say N.
 97
 98config F2FS_FAULT_INJECTION
 99	bool "F2FS fault injection facility"
100	depends on F2FS_FS
101	help
102	  Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.
103
104	  If unsure, say N.