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authorGerald Schaefer <gerald.schaefer@de.ibm.com>2018-08-07 19:57:11 +0300
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2018-08-09 09:05:48 +0300
commit37a366face294facb9c9d9fdd9f5b64a27456cbd (patch)
tree1632e0bf35b441b454f9d0ebda84c1e99ecbe454 /arch
parent4c14d1ce17bcc4c0c0f291ee162f9de73c4ee2eb (diff)
downloadlinux-37a366face294facb9c9d9fdd9f5b64a27456cbd.tar.xz
s390/mm: fix addressing exception after suspend/resume
Commit c9b5ad546e7d "s390/mm: tag normal pages vs pages used in page tables" accidentally changed the logic in arch_set_page_states(), which is used by the suspend/resume code. set_page_stable(page, order) was changed to set_page_stable_dat(page, 0). After this, only the first page of higher order pages will be set to stable, and a write to one of the unstable pages will result in an addressing exception. Fix this by using "order" again, instead of "0". Fixes: c9b5ad546e7d ("s390/mm: tag normal pages vs pages used in page tables") Cc: stable@vger.kernel.org # 4.14+ Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/mm/page-states.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c
index 382153ff17e3..dc3cede7f2ec 100644
--- a/arch/s390/mm/page-states.c
+++ b/arch/s390/mm/page-states.c
@@ -271,7 +271,7 @@ void arch_set_page_states(int make_stable)
list_for_each(l, &zone->free_area[order].free_list[t]) {
page = list_entry(l, struct page, lru);
if (make_stable)
- set_page_stable_dat(page, 0);
+ set_page_stable_dat(page, order);
else
set_page_unused(page, order);
}