tree eb2a2c1faa732c763102040478830111fc13f2a5
parent d73e60b7144a86baf0fdfcc9537a70bb4f72e11c
author Russell King <rmk@dyn-67.arm.linux.org.uk> 1225465715 +0000
committer Russell King <rmk+kernel@arm.linux.org.uk> 1227830027 +0000

[ARM] copypage: provide our own copy_user_highpage()

We used to override the copy_user_page() function.  However, this
is not only inefficient, it also causes additional complexity for
highmem support, since we convert from a struct page to a kernel
direct mapped address and back to a struct page again.

Moreover, with highmem support, we end up pointlessly setting up
kmap entries for pages which we're going to remap.  So, push the
kmapping down into the copypage implementation files where it's
required.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>