tree a2af11a3991b1bebe9d764ab6d4d28891e86eda2
parent 6c7c6afbb8c0e60d32a563cae7c6889211e9d9d8
author Alan Cox <alan@redhat.com> 1211573071 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1211648169 -0700

mm: fix atomic_t overflow in vm

The atomic_t type is 32bit but a 64bit system can have more than 2^32
pages of virtual address space available.  Without this we overflow on
ludicrously large mappings

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>