[PATCH 0/3] Fix bugs in munlock

[Vlastimil Babka]

This patch mini-series is a result of Sasha Levin's bug reports via trinity.

First two patches are quite straightforward fixes for bugs introduced in 3.12,
and earlier versions have been tested. Sasha, can you please test the final
versions of the first two (together) again? The first one added an extra
VM_BUG_ON.

The third is based on me noticing there might still be an (older than 3.12)
race with a THP page split with non-fatal but still bad consequences, such as
pages being kept mlocked. Since this is quite rare and was not reported, any
review agreeing that it can really happen would be great. Testing as well, of
course.  So it's kind of RFC at this point.

Vlastimil Babka (3):
  mm: munlock: fix a bug where THP tail page is encountered
  mm: munlock: fix deadlock in __munlock_pagevec()
  mm: munlock: fix potential race with THP page split

 mm/mlock.c | 116 ++++++++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 76 insertions(+), 40 deletions(-)

-- 
1.8.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/