tmpfs: expand "help" to explain value of TMPFS_POSIX_ACL

Expand the fs/Kconfig "help" info to clarify why it's a bad idea to
deselect the TMPFS_POSIX_ACL config variable.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Robert P. J. Day 2011-08-03 16:21:29 -07:00 committed by Linus Torvalds
parent 8079b1c859
commit 206506ccf0

View file

@ -127,14 +127,21 @@ config TMPFS_POSIX_ACL
select TMPFS_XATTR select TMPFS_XATTR
select GENERIC_ACL select GENERIC_ACL
help help
POSIX Access Control Lists (ACLs) support permissions for users and POSIX Access Control Lists (ACLs) support additional access rights
groups beyond the owner/group/world scheme. for users and groups beyond the standard owner/group/world scheme,
and this option selects support for ACLs specifically for tmpfs
filesystems.
If you've selected TMPFS, it's possible that you'll also need
this option as there are a number of Linux distros that require
POSIX ACL support under /dev for certain features to work properly.
For example, some distros need this feature for ALSA-related /dev
files for sound to work properly. In short, if you're not sure,
say Y.
To learn more about Access Control Lists, visit the POSIX ACLs for To learn more about Access Control Lists, visit the POSIX ACLs for
Linux website <http://acl.bestbits.at/>. Linux website <http://acl.bestbits.at/>.
If you don't know what Access Control Lists are, say N.
config TMPFS_XATTR config TMPFS_XATTR
bool "Tmpfs extended attributes" bool "Tmpfs extended attributes"
depends on TMPFS depends on TMPFS