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authorHugh Dickins <hugh@veritas.com>2009-01-06 14:39:22 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:01 -0800
commite5991371ee0d1c0ce19e133c6f9075b49c5b4ae8 (patch)
tree3e5c9c3293c025f537ff4416660a96d33c694b5f /include
parent39f0dee2d8abe902617622b71f8f6f73985ec71c (diff)
mm: remove cgroup_mm_owner_callbacks
cgroup_mm_owner_callbacks() was brought in to support the memrlimit controller, but sneaked into mainline ahead of it. That controller has now been shelved, and the mm_owner_changed() args were inadequate for it anyway (they needed an mm pointer instead of a task pointer). Remove the dead code, and restore mm_update_next_owner() locking to how it was before: taking mmap_sem there does nothing for memcontrol.c, now the only user of mm->owner. Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Paul Menage <menage@google.com> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/cgroup.h14
1 files changed, 1 insertions, 13 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 1164963c3a85..08b78c09b09a 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -329,13 +329,7 @@ struct cgroup_subsys {
struct cgroup *cgrp);
void (*post_clone)(struct cgroup_subsys *ss, struct cgroup *cgrp);
void (*bind)(struct cgroup_subsys *ss, struct cgroup *root);
- /*
- * This routine is called with the task_lock of mm->owner held
- */
- void (*mm_owner_changed)(struct cgroup_subsys *ss,
- struct cgroup *old,
- struct cgroup *new,
- struct task_struct *p);
+
int subsys_id;
int active;
int disabled;
@@ -400,9 +394,6 @@ void cgroup_iter_end(struct cgroup *cgrp, struct cgroup_iter *it);
int cgroup_scan_tasks(struct cgroup_scanner *scan);
int cgroup_attach_task(struct cgroup *, struct task_struct *);
-void cgroup_mm_owner_callbacks(struct task_struct *old,
- struct task_struct *new);
-
#else /* !CONFIG_CGROUPS */
static inline int cgroup_init_early(void) { return 0; }
@@ -420,9 +411,6 @@ static inline int cgroupstats_build(struct cgroupstats *stats,
return -EINVAL;
}
-static inline void cgroup_mm_owner_callbacks(struct task_struct *old,
- struct task_struct *new) {}
-
#endif /* !CONFIG_CGROUPS */
#endif /* _LINUX_CGROUP_H */