ec09c280b8
This patch fixes a bug under lower version linux kernel, mmap() fails when length is not aligned with hugepage size. mmap() without flag of MAP_ANONYMOUS, should be called with length argument aligned with hugepagesz at older longterm version Linux, like 2.6.32 and 3.2.72, or mmap() will fail with EINVAL. This bug was fixed in Linux kernel by commit: dab2d3dc45ae7343216635d981d43637e1cb7d45 To avoid failure, make sure in caller to keep length aligned. Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com> Acked-by: Huawei Xie <huawei.xie@intel.com>