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    Subject[PATCH 18/53] sched/headers: Move more mm_struct related functionality from <linux/sched.h> to <linux/sched/mm.h>
    Date
    Neither the mmap_layout nor the mm_update_next_owner() methods need to be
    in <linux/sched.h> - move them to the more appropriate <linux/sched/mm.h> header.

    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Mike Galbraith <efault@gmx.de>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: Ingo Molnar <mingo@kernel.org>
    ---
    include/linux/sched.h | 21 ---------------------
    include/linux/sched/mm.h | 21 +++++++++++++++++++++
    2 files changed, 21 insertions(+), 21 deletions(-)

    diff --git a/include/linux/sched.h b/include/linux/sched.h
    index f310c8e9c968..8f2ae1e11e73 100644
    --- a/include/linux/sched.h
    +++ b/include/linux/sched.h
    @@ -313,19 +313,6 @@ void __noreturn do_task_dead(void);

    struct nsproxy;

    -#ifdef CONFIG_MMU
    -extern void arch_pick_mmap_layout(struct mm_struct *mm);
    -extern unsigned long
    -arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
    - unsigned long, unsigned long);
    -extern unsigned long
    -arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
    - unsigned long len, unsigned long pgoff,
    - unsigned long flags);
    -#else
    -static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
    -#endif
    -
    /**
    * struct prev_cputime - snaphsot of system and user cputime
    * @utime: time spent in user mode
    @@ -2276,12 +2263,4 @@ static inline void inc_syscw(struct task_struct *tsk)
    #define TASK_SIZE_OF(tsk) TASK_SIZE
    #endif

    -#ifdef CONFIG_MEMCG
    -extern void mm_update_next_owner(struct mm_struct *mm);
    -#else
    -static inline void mm_update_next_owner(struct mm_struct *mm)
    -{
    -}
    -#endif /* CONFIG_MEMCG */
    -
    #endif
    diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
    index 175b61f2672a..8fd3152bfeaa 100644
    --- a/include/linux/sched/mm.h
    +++ b/include/linux/sched/mm.h
    @@ -57,4 +57,25 @@ extern struct mm_struct *mm_access(struct task_struct *task, unsigned int mode);
    /* Remove the current tasks stale references to the old mm_struct */
    extern void mm_release(struct task_struct *, struct mm_struct *);

    +#ifdef CONFIG_MEMCG
    +extern void mm_update_next_owner(struct mm_struct *mm);
    +#else
    +static inline void mm_update_next_owner(struct mm_struct *mm)
    +{
    +}
    +#endif /* CONFIG_MEMCG */
    +
    +#ifdef CONFIG_MMU
    +extern void arch_pick_mmap_layout(struct mm_struct *mm);
    +extern unsigned long
    +arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
    + unsigned long, unsigned long);
    +extern unsigned long
    +arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
    + unsigned long len, unsigned long pgoff,
    + unsigned long flags);
    +#else
    +static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
    +#endif
    +
    #endif /* _LINUX_SCHED_MM_H */
    --
    2.7.4
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