From: Robert P. J. Day Date: Wed, 3 Aug 2011 23:21:29 +0000 (-0700) Subject: tmpfs: expand "help" to explain value of TMPFS_POSIX_ACL X-Git-Tag: firefly_0821_release~3680^2~4738 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=206506ccf04b6790d11553a0c8595d1bf65790fe;p=firefly-linux-kernel-4.4.55.git 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 Acked-by: Randy Dunlap Acked-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 . - If you don't know what Access Control Lists are, say N. - config TMPFS_XATTR bool "Tmpfs extended attributes" depends on TMPFS