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futex: Split futex_mm_release() for exit/exec

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commit 150d71584b12809144b8145b817e83b81158ae5f upstream.

To allow separate handling of the futex exit state in the futex exit code
for exit and exec, split futex_mm_release() into two functions and invoke
them from the corresponding exit/exec_mm_release() callsites.

Preparatory only, no functional change.

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Ingo Molnar <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Thomas Gleixner 2019-11-06 22:55:39 +01:00 • committed by Greg Kroah-Hartman
commit 1bcee23370
3 changed files with 12 additions and 6 deletions
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7
kernel/futex.c
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@ -3661,7 +3661,7 @@ static void exit_robust_list(struct task_struct *curr)
}
}
void futex_mm_release(struct task_struct *tsk)
void futex_exec_release(struct task_struct *tsk)
{
if (unlikely(tsk->robust_list)) {
exit_robust_list(tsk);
@ -3679,6 +3679,11 @@ void futex_mm_release(struct task_struct *tsk)
exit_pi_state_list(tsk);
}
void futex_exit_release(struct task_struct *tsk)
{
futex_exec_release(tsk);
}
long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
u32 __user *uaddr2, u32 val2, u32 val3)
{