]> err.no Git - linux-2.6/commit
[PATCH] Add API for flushing Anon pages
authorJames Bottomley <James.Bottomley@SteelEye.com>
Sun, 26 Mar 2006 09:36:57 +0000 (01:36 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sun, 26 Mar 2006 16:56:53 +0000 (08:56 -0800)
commit03beb07664d768db97bf454ae5c9581cd4737bb4
treeb906c4db3a70627a58363193f3f843e7e2132ca1
parent64a07bd82ed526d813b64b0957543eef55bdf9c0
[PATCH] Add API for flushing Anon pages

Currently, get_user_pages() returns fully coherent pages to the kernel for
anything other than anonymous pages.  This is a problem for things like
fuse and the SCSI generic ioctl SG_IO which can potentially wish to do DMA
to anonymous pages passed in by users.

The fix is to add a new memory management API: flush_anon_page() which
is used in get_user_pages() to make anonymous pages coherent.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Documentation/cachetlb.txt
include/linux/highmem.h
mm/memory.c