tree 98d38ab533082d8145b932bb0e6c4ab86191186a
parent f30c2c983e09470446ee00472f9d4a927fe2e9cb
author Jeff Dike <jdike@addtoit.com> 1178488290 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1178565183 -0700

uml: speed up page table walking

The previous page table walking code was horribly inefficient.  This patch
replaces it with code taken from elsewhere in the kernel.

Forking from bash is now ~5% faster and page faults are handled ~10% faster.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>