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| author | Robert P. J. Day <rpjday@crashcourse.ca> | 2011-08-03 16:21:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-03 14:25:25 -1000 |
| commit | 206506ccf04b6790d11553a0c8595d1bf65790fe (patch) | |
| tree | b30ac4fd8005d5fe0ec818de303a0b486b15c007 | |
| parent | 8079b1c859c44f27d63da4951f5038a16589a563 (diff) | |
| download | lwn-206506ccf04b6790d11553a0c8595d1bf65790fe.tar.gz lwn-206506ccf04b6790d11553a0c8595d1bf65790fe.zip | |
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>
| -rw-r--r-- | fs/Kconfig | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/fs/Kconfig b/fs/Kconfig index 19891aab9c6e..9fe0b349f4cd 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -127,14 +127,21 @@ config TMPFS_POSIX_ACL select TMPFS_XATTR select GENERIC_ACL help - POSIX Access Control Lists (ACLs) support permissions for users and - groups beyond the owner/group/world scheme. + POSIX Access Control Lists (ACLs) support additional access rights + 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 Linux website <http://acl.bestbits.at/>. - If you don't know what Access Control Lists are, say N. - config TMPFS_XATTR bool "Tmpfs extended attributes" depends on TMPFS |