mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-17 14:30:00 +00:00
80 lines
2.7 KiB
Plaintext
80 lines
2.7 KiB
Plaintext
|
config EXT4_FS
|
||
|
|
tristate "The Extended 4 (ext4) filesystem"
|
||
|
|
select JBD2
|
||
|
|
select CRC16
|
||
|
|
help
|
||
|
|
This is the next generation of the ext3 filesystem.
|
||
|
|
|
||
|
|
Unlike the change from ext2 filesystem to ext3 filesystem,
|
||
|
|
the on-disk format of ext4 is not forwards compatible with
|
||
|
|
ext3; it is based on extent maps and it supports 48-bit
|
||
|
|
physical block numbers. The ext4 filesystem also supports delayed
|
||
|
|
allocation, persistent preallocation, high resolution time stamps,
|
||
|
|
and a number of other features to improve performance and speed
|
||
|
|
up fsck time. For more information, please see the web pages at
|
||
|
|
http://ext4.wiki.kernel.org.
|
||
|
|
|
||
|
|
The ext4 filesystem will support mounting an ext3
|
||
|
|
filesystem; while there will be some performance gains from
|
||
|
|
the delayed allocation and inode table readahead, the best
|
||
|
|
performance gains will require enabling ext4 features in the
|
||
|
|
filesystem, or formating a new filesystem as an ext4
|
||
|
|
filesystem initially.
|
||
|
|
|
||
|
|
To compile this file system support as a module, choose M here. The
|
||
|
|
module will be called ext4.
|
||
|
|
|
||
|
|
If unsure, say N.
|
||
|
|
|
||
|
|
config EXT4DEV_COMPAT
|
||
|
|
bool "Enable ext4dev compatibility"
|
||
|
|
depends on EXT4_FS
|
||
|
|
help
|
||
|
|
Starting with 2.6.28, the name of the ext4 filesystem was
|
||
|
|
renamed from ext4dev to ext4. Unfortunately there are some
|
||
|
|
legacy userspace programs (such as klibc's fstype) have
|
||
|
|
"ext4dev" hardcoded.
|
||
|
|
|
||
|
|
To enable backwards compatibility so that systems that are
|
||
|
|
still expecting to mount ext4 filesystems using ext4dev,
|
||
|
|
chose Y here. This feature will go away by 2.6.31, so
|
||
|
|
please arrange to get your userspace programs fixed!
|
||
|
|
|
||
|
|
config EXT4_FS_XATTR
|
||
|
|
bool "Ext4 extended attributes"
|
||
|
|
depends on EXT4_FS
|
||
|
|
default y
|
||
|
|
help
|
||
|
|
Extended attributes are name:value pairs associated with inodes by
|
||
|
|
the kernel or by users (see the attr(5) manual page, or visit
|
||
|
|
<http://acl.bestbits.at/> for details).
|
||
|
|
|
||
|
|
If unsure, say N.
|
||
|
|
|
||
|
|
You need this for POSIX ACL support on ext4.
|
||
|
|
|
||
|
|
config EXT4_FS_POSIX_ACL
|
||
|
|
bool "Ext4 POSIX Access Control Lists"
|
||
|
|
depends on EXT4_FS_XATTR
|
||
|
|
select FS_POSIX_ACL
|
||
|
|
help
|
||
|
|
POSIX Access Control Lists (ACLs) support permissions for users and
|
||
|
|
groups beyond the owner/group/world scheme.
|
||
|
|
|
||
|
|
To learn more about Access Control Lists, visit the POSIX ACLs for
|
||
|
|
Linux website <http://acl.bestbits.at/>.
|
||
|
|
|
||
|
|
If you don't know what Access Control Lists are, say N
|
||
|
|
|
||
|
|
config EXT4_FS_SECURITY
|
||
|
|
bool "Ext4 Security Labels"
|
||
|
|
depends on EXT4_FS_XATTR
|
||
|
|
help
|
||
|
|
Security labels support alternative access control models
|
||
|
|
implemented by security modules like SELinux. This option
|
||
|
|
enables an extended attribute handler for file security
|
||
|
|
labels in the ext4 filesystem.
|
||
|
|
|
||
|
|
If you are not using a security module that requires using
|
||
|
|
extended attributes for file security labels, say N.
|