On 01/30/2015 09:23 PM, Guenter Roeck wrote:
Commit bcd022801ee5 ("MIPS: Fix COW D-cache aliasing on fork") replaced
the inline function copy_user_page for mips with an external reference,
but neglected to introduce the actual non-inline function. Restore it.
Fixes: bcd022801ee5 ("MIPS: Fix COW D-cache aliasing on fork")
Fixes: 4927b7d77c00 ("dax,ext2: replace the XIP page fault handler with the DAX page fault handler")
Cc: Atsushi Nemoto <anemo@xxxxxxxxxxxxx>
Cc: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Why do you use copy_user_page?
It doesn't work properly in HIGHMEM environment and it is excluded from
MIPS because of that, I believe.
You should use copy_user_highpage() for user pages.
- Leonid.
