]> git.karo-electronics.de Git - karo-tx-linux.git/commit
thp: remove some code depend on CONFIG_NUMA
authorXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Thu, 13 Sep 2012 00:58:39 +0000 (10:58 +1000)
committerStephen Rothwell <sfr@canb.auug.org.au>
Thu, 13 Sep 2012 07:27:51 +0000 (17:27 +1000)
commit7fe96b3183878de2cd076a83de272308f2e9ebcc
treef1e0eebb8d01c93f6657f250e891061c765d0c7e
parentf76156f5a5d729fbedb7c2f9a4525e62443a5e66
thp: remove some code depend on CONFIG_NUMA

If NUMA is disabled, hpage is used as page pre-alloc, so there are two
cases for hpage:

- it is !NULL, means the page is not consumed otherwise,
- the page has been consumed

If NUMA is enabled, hpage is just used as alloc-fail indicator which is
not a real page, NULL means not fail triggered.

So, we can release the page only if !IS_ERR_OR_NULL

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mm/huge_memory.c