| commit | f86e4271978bd93db466d6a95dad4b0fdcdb04f6 | [log] [tgz] |
|---|---|---|
| author | Yang Shi <yang.shi@linaro.org> | Fri Jun 03 14:55:38 2016 -0700 |
| committer | Linus Torvalds <torvalds@linux-foundation.org> | Fri Jun 03 15:06:22 2016 -0700 |
| tree | 26ef29934495da598a11c3a177d0294a71c5eae8 | |
| parent | d8bae33dddc03dc652e1d8cfceebf4f753939de7 [diff] |
mm: check the return value of lookup_page_ext for all call sites Per the discussion with Joonsoo Kim [1], we need check the return value of lookup_page_ext() for all call sites since it might return NULL in some cases, although it is unlikely, i.e. memory hotplug. Tested with ltp with "page_owner=0". [1] http://lkml.kernel.org/r/20160519002809.GA10245@js1304-P5Q-DELUXE [akpm@linux-foundation.org: fix build-breaking typos] [arnd@arndb.de: fix build problems from lookup_page_ext] Link: http://lkml.kernel.org/r/6285269.2CksypHdYp@wuerfel [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/1464023768-31025-1-git-send-email-yang.shi@linaro.org Signed-off-by: Yang Shi <yang.shi@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>