From: David S. Miller Date: Mon, 18 Apr 2005 01:03:09 +0000 (-0700) Subject: [PATCH] sparc64: Do not flush dcache for ZERO_PAGE. X-Git-Tag: v2.6.12-rc3~27^2~13 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a9546f59e90d6ec1b65952c547302e0678e3a5ac;p=pandora-kernel.git [PATCH] sparc64: Do not flush dcache for ZERO_PAGE. This case actually can get exercised a lot during an ELF coredump of a process which contains a lot of non-COW'd anonymous pages. GDB has this test case which in partiaular creates near terabyte process full of ZERO_PAGEes. It takes forever to just walk through the page tables because of all of these spurious cache flushes on sparc64. With this change it takes only a second or so. Signed-off-by: David S. Miller Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed