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| author | Naoya Horiguchi <naoya.horiguchi@nec.com> | 2020-10-16 06:06:42 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 21:11:16 +0300 |
| commit | 1b473becde09d1aec17334a34af70ccdee9fe680 (patch) | |
| tree | 2239c5414b5d20bd229eb4f02c8ce67962466a43 /mm/memory-failure.c | |
| parent | 7d9d46ac87f91b8dedad5241d64382b650e26487 (diff) | |
| download | linux-1b473becde09d1aec17334a34af70ccdee9fe680.tar.xz | |
mm, hwpoison: remove recalculating hpage
hpage is never used after try_to_split_thp_page() in memory_failure(), so
we don't have to update hpage. So let's not recalculate/use hpage.
Suggested-by: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
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>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.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: Oscar Salvador <osalvador@suse.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20200922135650.1634-3-osalvador@suse.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 484f968641d1..6876757f4b85 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1341,7 +1341,6 @@ int memory_failure(unsigned long pfn, int flags) } unlock_page(p); VM_BUG_ON_PAGE(!page_count(p), p); - hpage = compound_head(p); } /* @@ -1413,11 +1412,8 @@ int memory_failure(unsigned long pfn, int flags) /* * Now take care of user space mappings. * Abort on fail: __delete_from_page_cache() assumes unmapped page. - * - * When the raw error page is thp tail page, hpage points to the raw - * page after thp split. */ - if (!hwpoison_user_mappings(p, pfn, flags, &hpage)) { + if (!hwpoison_user_mappings(p, pfn, flags, &p)) { action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED); res = -EBUSY; goto out; |