]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm, hugetlb: protect reserved pages when soft offlining a hugepage
authorJoonsoo Kim <iamjoonsoo.kim@lge.com>
Wed, 11 Sep 2013 21:21:51 +0000 (14:21 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Sep 2013 22:57:42 +0000 (15:57 -0700)
commit4ef91848043679b272a1a5b8e2879acf696ba9e2
treec3b84c11107f2a3885721edcee54fe6fdce07ba7
parent0f1cfe9d0d06fe44c2b310401d2db101968e8c58
mm, hugetlb: protect reserved pages when soft offlining a hugepage

Don't use the reserve pool when soft offlining a hugepage.  Check we have
free pages outside the reserve pool before we dequeue the huge page.
Otherwise, we can steal other's reserve page.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reviewed-by: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/hugetlb.c