tree 4a822b5150773dd979f723232ed2d7169214d9bd
parent 57ac895a7f22d235f637317f58a2d9ba6ec91a27
author Jeff Dike <jdike@addtoit.com> 1178488279 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1178565182 -0700

uml: speed up exec

flush_thread doesn't need to do a full page table walk in order to clear the
address space.  It knows what the end result needs to be, so it can call unmap
directly.

This results in a 10-20% speedup in an exec from bash.

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>