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openSUSE:Evergreen:Maintenance:114
xen.openSUSE_Evergreen_11.4
25459-page-list-splice.patch
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File 25459-page-list-splice.patch of Package xen.openSUSE_Evergreen_11.4
# HG changeset patch # User Jan Beulich <jbeulich@suse.com> # Date 1338997025 -3600 # Node ID f6bfaf9daa508c31b2bca0e461202db2759426fc # Parent 8ec2c428f4dad55cf6d91b893a19c2218972db5e xen: fix page_list_splice() Other than in __list_splice(), the first element's prev pointer doesn't need adjustment here - it already is PAGE_LIST_NULL. Rather than fixing the assignment (to formally match __list_splice()), simply assert that this assignment is really unnecessary. Reported-by: Jisoo Yang <jisooy@gmail.com> Signed-off-by: Jan Beulich <jbeulich@suse.com> Also assert that the prev pointers are both PAGE_LIST_NULL. Signed-off-by: Keir Fraser <keir@xen.org> Committed-by: Keir Fraser <keir@xen.org> --- a/xen/include/xen/mm.h +++ b/xen/include/xen/mm.h @@ -265,7 +265,8 @@ page_list_splice(struct page_list_head * last = list->tail; at = head->next; - first->list.prev = page_to_pdx(head->next); + ASSERT(first->list.prev == PAGE_LIST_NULL); + ASSERT(first->list.prev == at->list.prev); head->next = first; last->list.next = page_to_pdx(at);
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