keys: kill the dummy key_replace_session_keyring()
After the previouse change key_replace_session_keyring() becomes a nop. Remove the dummy definition in key.h and update the callers in arch/*/kernel/signal.c. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Alexander Gordeev <agordeev@redhat.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Smith <dsmith@redhat.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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@ -33,8 +33,6 @@ typedef uint32_t key_perm_t;
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struct key;
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#define key_replace_session_keyring() do { } while (0)
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#ifdef CONFIG_KEYS
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#undef KEY_DEBUGGING
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@ -186,8 +186,6 @@ static inline void set_notify_resume(struct task_struct *task)
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*/
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static inline void tracehook_notify_resume(struct pt_regs *regs)
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{
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if (current->replacement_session_keyring)
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key_replace_session_keyring();
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/*
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* The caller just cleared TIF_NOTIFY_RESUME. This barrier
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* pairs with task_work_add()->set_notify_resume() after
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