[PATCH] drm: make sure page protections are updated after changing vm_flags.

[Jeremy Fitzhardinge]

Some architectures compute ->vm_page_prot depending on ->vm_flags, so
we need to update the protections after adjusting the flags.

Reported-by: Jan Beulich <jbeul...@novell.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardi...@citrix.com>

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 8104eca..9d3e39f 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -537,7 +537,7 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct 
*vma)
        vma->vm_ops = obj->dev->driver->gem_vm_ops;
        vma->vm_private_data = map->handle;
        /* FIXME: use pgprot_writecombine when available */
-       vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+       vma->vm_page_prot = 
pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
 
        /* Take a ref for this mapping of the object, so that the fault
         * handler can dereference the mmap offset's pointer to the object.



------------------------------------------------------------------------------
Come build with us! The BlackBerry&reg; Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay 
ahead of the curve. Join us from November 9&#45;12, 2009. Register now&#33;
http://p.sf.net/sfu/devconf
--
_______________________________________________
Dri-devel mailing list
Dri-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dri-devel