X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-ia64%2Fpgalloc.h;h=973316828f028fe1cfa009129a639e5ccca94fa4;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=68be9d57c7d0764748981a4dad9879a9f9e213d6;hpb=db216c3d5e4c040e557a50f8f5d35d5c415e8c1c;p=linux-2.6.git

diff --git a/include/asm-ia64/pgalloc.h b/include/asm-ia64/pgalloc.h
index 68be9d57c..973316828 100644
--- a/include/asm-ia64/pgalloc.h
+++ b/include/asm-ia64/pgalloc.h
@@ -37,14 +37,20 @@
 static inline pgd_t*
 pgd_alloc_one_fast (struct mm_struct *mm)
 {
-	unsigned long *ret = pgd_quicklist;
+	unsigned long *ret = NULL;
 
+	preempt_disable();
+
+	ret = pgd_quicklist;
 	if (likely(ret != NULL)) {
 		pgd_quicklist = (unsigned long *)(*ret);
 		ret[0] = 0;
 		--pgtable_cache_size;
 	} else
 		ret = NULL;
+
+	preempt_enable();
+
 	return (pgd_t *) ret;
 }
 
@@ -65,9 +71,11 @@ pgd_alloc (struct mm_struct *mm)
 static inline void
 pgd_free (pgd_t *pgd)
 {
+	preempt_disable();
 	*(unsigned long *)pgd = (unsigned long) pgd_quicklist;
 	pgd_quicklist = (unsigned long *) pgd;
 	++pgtable_cache_size;
+	preempt_enable();
 }
 
 static inline void
@@ -80,13 +88,19 @@ pgd_populate (struct mm_struct *mm, pgd_t *pgd_entry, pmd_t *pmd)
 static inline pmd_t*
 pmd_alloc_one_fast (struct mm_struct *mm, unsigned long addr)
 {
-	unsigned long *ret = (unsigned long *)pmd_quicklist;
+	unsigned long *ret = NULL;
 
+	preempt_disable();
+
+	ret = (unsigned long *)pmd_quicklist;
 	if (likely(ret != NULL)) {
 		pmd_quicklist = (unsigned long *)(*ret);
 		ret[0] = 0;
 		--pgtable_cache_size;
 	}
+
+	preempt_enable();
+
 	return (pmd_t *)ret;
 }
 
@@ -103,9 +117,11 @@ pmd_alloc_one (struct mm_struct *mm, unsigned long addr)
 static inline void
 pmd_free (pmd_t *pmd)
 {
+	preempt_disable();
 	*(unsigned long *)pmd = (unsigned long) pmd_quicklist;
 	pmd_quicklist = (unsigned long *) pmd;
 	++pgtable_cache_size;
+	preempt_enable();
 }
 
 #define __pmd_free_tlb(tlb, pmd)	pmd_free(pmd)