The patch titled
Subject: include/linux/sem.h: make sysv_sem empty if SYSVIPC is disabled
has been added to the -mm tree. Its filename is
include-linux-semh-make-sysv_sem-empty-if-sysvipc-is-disabled.patch
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------------------------------------------------------
From: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Subject: include/linux/sem.h: make sysv_sem empty if SYSVIPC is disabled
For the sysvsem undo, each task struct contains a sysv_sem structure with
a pointer to the undo information.
This pointer is only necessary if sysvipc is enabled - thus the pointer
can be made conditional on CONFIG_SYSVIPC.
Signed-off-by: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Acked-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxx>
---
include/linux/sem.h | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff -puN include/linux/sem.h~include-linux-semh-make-sysv_sem-empty-if-sysvipc-is-disabled include/linux/sem.h
--- a/include/linux/sem.h~include-linux-semh-make-sysv_sem-empty-if-sysvipc-is-disabled
+++ a/include/linux/sem.h
@@ -96,16 +96,21 @@ struct sem_array {
int complex_count; /* pending complex operations */
};
+#ifdef CONFIG_SYSVIPC
+
struct sysv_sem {
struct sem_undo_list *undo_list;
};
-#ifdef CONFIG_SYSVIPC
-
extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
extern void exit_sem(struct task_struct *tsk);
#else
+
+struct sysv_sem {
+ /* empty */
+};
+
static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
{
return 0;
_
Subject: Subject: include/linux/sem.h: make sysv_sem empty if SYSVIPC is disabled
Patches currently in -mm which might be from manfred@xxxxxxxxxxxxxxxx are
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-semc-fix-return-code-race-with-semop-vs-semop-semctlipc_rmid.patch
ipc-semc-handle-spurious-wakeups.patch
ipc-semc-remove-private-structures-from-public-header-file.patch
include-linux-semh-make-sysv_sem-empty-if-sysvipc-is-disabled.patch
ipc-semc-alternatives-to-preempt_disable.patch
slab-leaks3-default-y.patch
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