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staging: erofs: update Kconfig

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Keep in line with erofs-outofstaging patchset:
 - turn on CONFIG_EROFS_FS_ZIP by default;
 - turn on CONFIG_EROFS_FS_SECURITY by default suggested by David;
 - update Kconfig description.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190731155752.210602-23-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gao Xiang 2019-07-31 23:57:52 +08:00 committed by Greg Kroah-Hartman
parent bc33d9f35d
commit 0b800f3dba
1 changed files with 28 additions and 26 deletions
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54
drivers/staging/erofs/Kconfig
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@ -4,16 +4,16 @@ config EROFS_FS
tristate "EROFS filesystem support"
depends on BLOCK
help
EROFS(Enhanced Read-Only File System) is a lightweight
EROFS (Enhanced Read-Only File System) is a lightweight
read-only file system with modern designs (eg. page-sized
blocks, inline xattrs/data, etc.) for scenarios which need
high-performance read-only requirements, eg. firmwares in
mobile phone or LIVECDs.
high-performance read-only requirements, e.g. Android OS
for mobile phones and LIVECDs.
It also provides VLE compression support, focusing on
random read improvements, keeping relatively lower
compression ratios, which is useful for high-performance
devices with limited memory and ROM space.
It also provides fixed-sized output compression support,
which improves storage density, keeps relatively higher
compression ratios, which is more useful to achieve high
performance for embedded devices with limited memory.
If unsure, say N.
@ -21,11 +21,19 @@ config EROFS_FS_DEBUG
bool "EROFS debugging feature"
depends on EROFS_FS
help
Print EROFS debugging messages and enable more BUG_ONs
which check the filesystem consistency aggressively.
Print debugging messages and enable more BUG_ONs which check
filesystem consistency and find potential issues aggressively,
which can be used for Android eng build, for example.
For daily use, say N.
config EROFS_FAULT_INJECTION
bool "EROFS fault injection facility"
depends on EROFS_FS
help
Test EROFS to inject faults such as ENOMEM, EIO, and so on.
If unsure, say N.
config EROFS_FS_XATTR
bool "EROFS extended attributes"
depends on EROFS_FS
@ -54,6 +62,7 @@ config EROFS_FS_POSIX_ACL
config EROFS_FS_SECURITY
bool "EROFS Security Labels"
depends on EROFS_FS_XATTR
default y
help
Security labels provide an access control facility to support Linux
Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
@ -63,22 +72,15 @@ config EROFS_FS_SECURITY
If you are not using a security module, say N.
config EROFS_FAULT_INJECTION
bool "EROFS fault injection facility"
depends on EROFS_FS
help
Test EROFS to inject faults such as ENOMEM, EIO, and so on.
If unsure, say N.
config EROFS_FS_ZIP
bool "EROFS Data Compresssion Support"
bool "EROFS Data Compression Support"
depends on EROFS_FS
select LZ4_DECOMPRESS
default y
help
Currently we support LZ4 VLE Compression only.
Play at your own risk.
Enable fixed-sized output compression for EROFS.
If you don't want to use compression feature, say N.
If you don't want to enable compression feature, say N.
config EROFS_FS_CLUSTER_PAGE_LIMIT
int "EROFS Cluster Pages Hard Limit"
@ -86,11 +88,11 @@ config EROFS_FS_CLUSTER_PAGE_LIMIT
range 1 256
default "1"
help
Indicates VLE compressed pages hard limit of a
compressed cluster.
Indicates maximum # of pages of a compressed
physical cluster.
For example, if files of a image are compressed
into 8k-unit, the hard limit should not be less
than 2. Otherwise, the image cannot be mounted
correctly on this kernel.
For example, if files in a image were compressed
into 8k-unit, hard limit should not be configured
less than 2. Otherwise, the image will be refused
to mount on this kernel.