From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Date: Fri, 23 Sep 2005 04:44:15 +0000 (-0700)
Subject: [PATCH] uml: don't redundantly mark pte as newpage in pte_modify
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=69e1e688f5698287b45fbff22a01de91b20804cd;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] uml: don't redundantly mark pte as newpage in pte_modify

pte_modify marks a page as needing flush, which is redundant because the
resulting PTE is still set with set_pte, which already handles that.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h
index ed06170e0edd..616d02b57ea9 100644
--- a/include/asm-um/pgtable.h
+++ b/include/asm-um/pgtable.h
@@ -346,7 +346,6 @@ static inline void set_pte(pte_t *pteptr, pte_t pteval)
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 {
 	pte_set_val(pte, (pte_val(pte) & _PAGE_CHG_MASK), newprot);
-	if(pte_present(pte)) pte = pte_mknewpage(pte_mknewprot(pte));
 	return pte; 
 }