mm/vmalloc.c: fix align value calculation error

It causes double align requirement for __get_vm_area_node() if parameter
size is power of 2 and VM_IOREMAP is set in parameter flags, for example
size=0x10000 -> fls_long(0x10000)=17 -> align=0x20000

get_count_order_long() is implemented and can be used instead of
fls_long() for fixing the bug, for example size=0x10000 ->
get_count_order_long(0x10000)=16 -> align=0x10000

[[email protected]: s/get_order_long()/get_count_order_long()/]
[[email protected]: fixes]
 Link: http://lkml.kernel.org/r/[email protected]
[[email protected]: locate get_count_order_long() next to get_count_order()]
[[email protected]: move get_count_order[_long] definitions to pick up fls_long()]
[[email protected]: move out get_count_order[_long]() from __KERNEL__ scope]
 Link: http://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: zijun_hu <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: David Rientjes <[email protected]>
Signed-off-by: zijun_hu <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions