The patch titled
Subject: mm/migrate: allow migrate_vma() to alloc new page on empty entry fix
has been added to the -mm tree. Its filename is
mm-migrate-allow-migrate_vma-to-alloc-new-page-on-empty-entry-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-migrate-allow-migrate_vma-to-alloc-new-page-on-empty-entry-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-migrate-allow-migrate_vma-to-alloc-new-page-on-empty-entry-fix.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Subject: mm/migrate: allow migrate_vma() to alloc new page on empty entry fix
Link: http://lkml.kernel.org/r/20170410175103.1a534c7d@xxxxxxxxxxxxxxxx
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN mm/migrate.c~mm-migrate-allow-migrate_vma-to-alloc-new-page-on-empty-entry-fix mm/migrate.c
--- a/mm/migrate.c~mm-migrate-allow-migrate_vma-to-alloc-new-page-on-empty-entry-fix
+++ a/mm/migrate.c
@@ -2478,6 +2478,7 @@ static void migrate_vma_insert_page(stru
struct mem_cgroup *memcg;
spinlock_t *ptl;
pgd_t *pgdp;
+ p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -2488,7 +2489,10 @@ static void migrate_vma_insert_page(stru
goto abort;
pgdp = pgd_offset(mm, addr);
- pudp = pud_alloc(mm, pgdp, addr);
+ p4dp = p4d_alloc(mm, pgdp, addr);
+ if (!p4dp)
+ goto abort;
+ pudp = pud_alloc(mm, p4dp, addr);
if (!pudp)
goto abort;
pmdp = pmd_alloc(mm, pudp, addr);
_
Patches currently in -mm which might be from sfr@xxxxxxxxxxxxxxxx are
mm-introduce-kvalloc-helpers-fix.patch
mm-migrate-allow-migrate_vma-to-alloc-new-page-on-empty-entry-fix.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
