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Red Hat Bugzilla – Attachment 292038 Details for
Bug 428612
RHEL 5.1 regression in hugepages due to pagetable sharing patch
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[patch]
hugetlb page leak patch
linux-2.6.18-hugetlb-fix-for-page-sharing.patch (text/plain), 460 bytes, created by
John Sobecki
on 2008-01-17 18:09:59 UTC
(
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Description:
hugetlb page leak patch
Filename:
MIME Type:
Creator:
John Sobecki
Created:
2008-01-17 18:09:59 UTC
Size:
460 bytes
patch
obsolete
>--- linux-2.6.18.noarch/mm/hugetlb.c.orig 2008-01-17 07:51:19.000000000 -0800 >+++ linux-2.6.18.noarch/mm/hugetlb.c 2008-01-17 07:54:14.000000000 -0800 >@@ -340,6 +340,11 @@ > dst_pte = huge_pte_alloc(dst, addr); > if (!dst_pte) > goto nomem; >+ >+ /* if the pagetables are shared dont copy or take references */ >+ if(dst_pte == src_pte) >+ continue; >+ > spin_lock(&dst->page_table_lock); > spin_lock(&src->page_table_lock); > if (!pte_none(*src_pte)) {
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bug 428612
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