38 lines
1.0 KiB
Diff
38 lines
1.0 KiB
Diff
From: Thomas Gleixner <tglx@linutronix.de>
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Date: Sat, 25 Jul 2009 22:06:27 +0200
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Subject: mm: Remove preempt count from pagefault disable/enable
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.4-rt1.tar.xz
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Now that all users are cleaned up, we can remove the preemption count.
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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mm/memory.c | 7 -------
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1 file changed, 7 deletions(-)
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Index: linux-stable/mm/memory.c
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===================================================================
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--- linux-stable.orig/mm/memory.c
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+++ linux-stable/mm/memory.c
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@@ -3751,7 +3751,6 @@ unlock:
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#ifdef CONFIG_PREEMPT_RT_FULL
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void pagefault_disable(void)
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{
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- inc_preempt_count();
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current->pagefault_disabled++;
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/*
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* make sure to have issued the store before a pagefault
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@@ -3769,12 +3768,6 @@ void pagefault_enable(void)
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*/
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barrier();
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current->pagefault_disabled--;
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- dec_preempt_count();
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- /*
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- * make sure we do..
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- */
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- barrier();
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- preempt_check_resched();
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}
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EXPORT_SYMBOL(pagefault_enable);
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#endif
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