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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2016-03-15 14:56:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-15 16:55:16 -0700 |
| commit | 23a003bfd23ea9ea0b7756b920e51f64b284b468 (patch) | |
| tree | 3219402f3b8ad53114e4193e27b852ba7cb79f90 | |
| parent | 5b3810e5c6e1b9a1858464a53b5d72ee050bb918 (diff) | |
| download | op-kernel-dev-23a003bfd23ea9ea0b7756b920e51f64b284b468.zip op-kernel-dev-23a003bfd23ea9ea0b7756b920e51f64b284b468.tar.gz | |
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>
| -rw-r--r-- | mm/madvise.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index f56825b..6a77114 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -555,8 +555,9 @@ static int madvise_hwpoison(int bhv, unsigned long start, unsigned long end) } 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; } |
