From: Jeff Dike <jdike@addtoit.com>
Date: Sun, 6 May 2007 21:51:19 +0000 (-0700)
Subject: uml: speed up exec
X-Git-Tag: v2.6.22-rc1~866
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a18ff1bde0c3da9ece3ba60e6eae2ef87f91a12e;p=pandora-kernel.git

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>
---

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