The patch titled Subject: sysctl: make CONFIG_SYSCTL_SYSCALL default to n has been removed from the -mm tree. Its filename was sysctl-make-config_sysctl_syscall-default-to-n.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ From: WANG Cong <amwang@xxxxxxxxxx> Subject: sysctl: make CONFIG_SYSCTL_SYSCALL default to n When I tried to send a patch to remove it, Andi told me we still need to keep compabitlies for old libc, so we can't remove this completely. Then just make it default to n and remove the doc from feature-removal-schedule.txt. Signed-off-by: WANG Cong <amwang@xxxxxxxxxx> Cc: Eric Biederman <ebiederm@xxxxxxxxxxxx> Cc: Andi Kleen <andi@xxxxxxxxxxxxxx> Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/feature-removal-schedule.txt | 35 ------------------- init/Kconfig | 4 +- 2 files changed, 2 insertions(+), 37 deletions(-) diff -puN Documentation/feature-removal-schedule.txt~sysctl-make-config_sysctl_syscall-default-to-n Documentation/feature-removal-schedule.txt --- a/Documentation/feature-removal-schedule.txt~sysctl-make-config_sysctl_syscall-default-to-n +++ a/Documentation/feature-removal-schedule.txt @@ -133,41 +133,6 @@ Who: Pavel Machek <pavel@xxxxxx> --------------------------- -What: sys_sysctl -When: September 2010 -Option: CONFIG_SYSCTL_SYSCALL -Why: The same information is available in a more convenient from - /proc/sys, and none of the sysctl variables appear to be - important performance wise. - - Binary sysctls are a long standing source of subtle kernel - bugs and security issues. - - When I looked several months ago all I could find after - searching several distributions were 5 user space programs and - glibc (which falls back to /proc/sys) using this syscall. - - The man page for sysctl(2) documents it as unusable for user - space programs. - - sysctl(2) is not generally ABI compatible to a 32bit user - space application on a 64bit and a 32bit kernel. - - For the last several months the policy has been no new binary - sysctls and no one has put forward an argument to use them. - - Binary sysctls issues seem to keep happening appearing so - properly deprecating them (with a warning to user space) and a - 2 year grace warning period will mean eventually we can kill - them and end the pain. - - In the mean time individual binary sysctls can be dealt with - in a piecewise fashion. - -Who: Eric Biederman <ebiederm@xxxxxxxxxxxx> - ---------------------------- - What: /proc/<pid>/oom_adj When: August 2012 Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's diff -puN init/Kconfig~sysctl-make-config_sysctl_syscall-default-to-n init/Kconfig --- a/init/Kconfig~sysctl-make-config_sysctl_syscall-default-to-n +++ a/init/Kconfig @@ -947,7 +947,7 @@ config UID16 config SYSCTL_SYSCALL bool "Sysctl syscall support" if EXPERT depends on PROC_SYSCTL - default y + default n select SYSCTL ---help--- sys_sysctl uses binary paths that have been found challenging @@ -959,7 +959,7 @@ config SYSCTL_SYSCALL trying to save some space it is probably safe to disable this, making your kernel marginally smaller. - If unsure say Y here. + If unsure say N here. config KALLSYMS bool "Load all symbols for debugging/ksymoops" if EXPERT _ Patches currently in -mm which might be from amwang@xxxxxxxxxx are origin.patch linux-next.patch ipc-mqueue-cleanup-definition-names-and-locations.patch ipc-mqueue-switch-back-to-using-non-max-values-on-create.patch ipc-mqueue-enforce-hard-limits.patch ipc-mqueue-update-maximums-for-the-mqueue-subsystem.patch ipc-mqueue-update-maximums-for-the-mqueue-subsystem-checkpatch-fixes.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html