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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-11-07 00:55:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 17:38:25 +0300 |
| commit | 7d79d1c681ac4f4e0702ceb346150db4b3bb87c7 (patch) | |
| tree | ec01ae5943123536922adfbd677fc0bd3450bcc7 /include | |
| parent | c35d0ebed357f47ede0afef03699db29f14032c1 (diff) | |
| download | linux-7d79d1c681ac4f4e0702ceb346150db4b3bb87c7.tar.xz | |
exit/exec: Seperate mm_release()
commit 4610ba7ad877fafc0a25a30c6c82015304120426 upstream.
mm_release() contains the futex exit handling. mm_release() is called from
do_exit()->exit_mm() and from exec()->exec_mm().
In the exit_mm() case PF_EXITING and the futex state is updated. In the
exec_mm() case these states are not touched.
As the futex exit code needs further protections against exit races, this
needs to be split into two functions.
Preparatory only, no functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191106224556.240518241@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched/mm.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h index 9f7cc1d7ec4a..efb9e12e7f91 100644 --- a/include/linux/sched/mm.h +++ b/include/linux/sched/mm.h @@ -125,8 +125,10 @@ extern struct mm_struct *get_task_mm(struct task_struct *task); * succeeds. */ 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 *); +/* Remove the current tasks stale references to the old mm_struct on exit() */ +extern void exit_mm_release(struct task_struct *, struct mm_struct *); +/* Remove the current tasks stale references to the old mm_struct on exec() */ +extern void exec_mm_release(struct task_struct *, struct mm_struct *); #ifdef CONFIG_MEMCG extern void mm_update_next_owner(struct mm_struct *mm); |