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authorNaoya Horiguchi <naoya.horiguchi@nec.com>2020-10-15 20:07:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-16 11:11:17 -0700
commit5d1fd5dc877bc1c670e7b1c174aa659b76c07de1 (patch)
tree0b14158b2481a176b6ea3d1ccd78fc5b594b2a85 /mm
parent5a2ffca3c23333a41cf8604f62994cfd28e4267b (diff)
mm,hwpoison: introduce MF_MSG_UNSPLIT_THP
memory_failure() is supposed to call action_result() when it handles a memory error event, but there's one missing case. So let's add it. I find that include/ras/ras_event.h has some other MF_MSG_* undefined, so this patch also adds them. Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Signed-off-by: Oscar Salvador <osalvador@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Aristeu Rozanski <aris@ruivo.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Dmitry Yakunin <zeil@yandex-team.ru> Cc: Michal Hocko <mhocko@kernel.org> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Oscar Salvador <osalvador@suse.com> Cc: Qian Cai <cai@lca.pw> Cc: Tony Luck <tony.luck@intel.com> Link: https://lkml.kernel.org/r/20200922135650.1634-13-osalvador@suse.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory-failure.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 1fb290faf28e..f9fa9982b5d4 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -582,6 +582,7 @@ static const char * const action_page_types[] = {
[MF_MSG_BUDDY] = "free buddy page",
[MF_MSG_BUDDY_2ND] = "free buddy page (2nd try)",
[MF_MSG_DAX] = "dax page",
+ [MF_MSG_UNSPLIT_THP] = "unsplit thp",
[MF_MSG_UNKNOWN] = "unknown page",
};
@@ -1370,8 +1371,10 @@ int memory_failure(unsigned long pfn, int flags)
}
if (PageTransHuge(hpage)) {
- if (try_to_split_thp_page(p, "Memory Failure") < 0)
+ if (try_to_split_thp_page(p, "Memory Failure") < 0) {
+ action_result(pfn, MF_MSG_UNSPLIT_THP, MF_IGNORED);
return -EBUSY;
+ }
VM_BUG_ON_PAGE(!page_count(p), p);
}