The patch titled
Subject: mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2
has been added to the -mm tree. Its filename is
mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2.patch
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------------------------------------------------------
From: James Morse <james.morse@xxxxxxx>
Subject: mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2
Added vm_fault_to_errno() call to faultin_page() as Naoya Horiguchi
suggested.
Link: http://lkml.kernel.org/r/20170525171035.16359-1-james.morse@xxxxxxx
Signed-off-by: James Morse <james.morse@xxxxxxx>
Acked-by: Punit Agrawal <punit.agrawal@xxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 10 ++++------
mm/hugetlb.c | 3 ++-
2 files changed, 6 insertions(+), 7 deletions(-)
diff -puN mm/gup.c~mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2 mm/gup.c
--- a/mm/gup.c~mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2
+++ a/mm/gup.c
@@ -795,12 +795,10 @@ retry:
ret = handle_mm_fault(vma, address, fault_flags);
major |= ret & VM_FAULT_MAJOR;
if (ret & VM_FAULT_ERROR) {
- if (ret & VM_FAULT_OOM)
- return -ENOMEM;
- if (ret & (VM_FAULT_HWPOISON | VM_FAULT_HWPOISON_LARGE))
- return -EHWPOISON;
- if (ret & (VM_FAULT_SIGBUS | VM_FAULT_SIGSEGV))
- return -EFAULT;
+ int err = vm_fault_to_errno(ret, 0);
+
+ if (err)
+ return err;
BUG();
}
diff -puN mm/hugetlb.c~mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2 mm/hugetlb.c
--- a/mm/hugetlb.c~mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2
+++ a/mm/hugetlb.c
@@ -4192,9 +4192,10 @@ long follow_hugetlb_page(struct mm_struc
if (ret & VM_FAULT_ERROR) {
int err = vm_fault_to_errno(ret, flags);
- remainder = 0;
if (err)
return err;
+
+ remainder = 0;
break;
}
if (ret & VM_FAULT_RETRY) {
_
Patches currently in -mm which might be from james.morse@xxxxxxx are
mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified.patch
mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-v2.patch
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