[PATCH] s390: isclean bug.

Remove the _PAGE_ISCLEAN bit in pte_mkwrite to make pte_mkwrite work correctly even if it is not followed by a pte_mkdirty.

[PATCH] s390: isclean bug.
Remove the _PAGE_ISCLEAN bit in pte_mkwrite to make pte_mkwrite work correctly even if it is not followed by a pte_mkdirty.
35adc636 · Martin Schwidefsky · Linus Torvalds · c40dd755 · 35adc636 · 35adc636
Commit 35adc636 authored Nov 17, 2002 by Martin Schwidefsky Committed by Linus Torvalds Nov 17, 2002
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include/asm-s390/pgtable.h include/asm-s390/pgtable.h +1 -1

include/asm-s390x/pgtable.h include/asm-s390x/pgtable.h +1 -1

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--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -320,7 +320,7 @@ extern inline pte_t pte_wrprotect(pte_t pte)

 extern inline pte_t pte_mkwrite(pte_t pte) 
 {
-	pte_val(pte) &= ~_PAGE_RO;
+	pte_val(pte) &= ~(_PAGE_RO | _PAGE_ISCLEAN);
 	return pte;
 }


--- a/include/asm-s390x/pgtable.h
+++ b/include/asm-s390x/pgtable.h
@@ -339,7 +339,7 @@ extern inline pte_t pte_wrprotect(pte_t pte)

 extern inline pte_t pte_mkwrite(pte_t pte)
 {
-	pte_val(pte) &= ~_PAGE_RO;
+	pte_val(pte) &= ~(_PAGE_RO | _PAGE_ISCLEAN);
 	return pte;
 }