The patch titled
Subject: mm/madvise: pass return code of memory_failure() to userspace
has been added to the -mm tree. Its filename is
mm-madvise-pass-return-code-of-memory_failure-to-userspace.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-madvise-pass-return-code-of-memory_failure-to-userspace.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-madvise-pass-return-code-of-memory_failure-to-userspace.patch
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------------------------------------------------------
From: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Subject: mm/madvise: pass return code of memory_failure() to userspace
Currently the return value of memory_failure() is not passed to userspace
when madvise(MADV_HWPOISON) is used. This is inconvenient for test
programs that want to know the result of error handling. So let's return
it to the caller as we already do in the MADV_SOFT_OFFLINE case.
Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Chen Gong <gong.chen@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/madvise.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff -puN mm/madvise.c~mm-madvise-pass-return-code-of-memory_failure-to-userspace mm/madvise.c
--- a/mm/madvise.c~mm-madvise-pass-return-code-of-memory_failure-to-userspace
+++ a/mm/madvise.c
@@ -555,8 +555,9 @@ static int madvise_hwpoison(int bhv, uns
}
pr_info("Injecting memory failure for page %#lx at %#lx\n",
page_to_pfn(p), start);
- /* Ignore return value for now */
- memory_failure(page_to_pfn(p), 0, MF_COUNT_INCREASED);
+ ret = memory_failure(page_to_pfn(p), 0, MF_COUNT_INCREASED);
+ if (ret)
+ return ret;
}
return 0;
}
_
Patches currently in -mm which might be from n-horiguchi@xxxxxxxxxxxxx are
mm-madvise-pass-return-code-of-memory_failure-to-userspace.patch
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