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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@ah.jp.nec.com> Cc: Chen Gong <gong.chen@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 3 additions and 2 deletions
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@ -555,8 +555,9 @@ static int madvise_hwpoison(int bhv, unsigned long start, unsigned long end)
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}
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pr_info("Injecting memory failure for page %#lx at %#lx\n",
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page_to_pfn(p), start);
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/* Ignore return value for now */
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memory_failure(page_to_pfn(p), 0, MF_COUNT_INCREASED);
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ret = memory_failure(page_to_pfn(p), 0, MF_COUNT_INCREASED);
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if (ret)
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return ret;
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}
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return 0;
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}
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