tree f6937c0ce29c79078d6df8346a374a7b9947f360
parent b5e7ae5dd034c2c0ed75c31fca04a805097817bc
author David S. Miller <davem@sunset.davemloft.net> 1142635263 -0800
committer David S. Miller <davem@sunset.davemloft.net> 1142846195 -0800

[SPARC64]: Top-down address space allocation for 32-bit tasks.

Currently allocations are very constrained for 32-bit processes.
It grows down-up from 0x70000000 to 0xf0000000 which gives about
2GB of stack + dynamic mmap() space.

So support the top-down method, and we need to override the
generic helper function in order to deal with D-cache coloring.

With these changes I was able to squeeze out a mmap() just over
3.6GB in size in a 32-bit process.

Signed-off-by: David S. Miller <davem@davemloft.net>