[media] v4l: vb2-memops: use vma slab when vma allocation

The slab for vm_area_struct which is vm_area_cachep is already prepared
for the general use. Instead of kmalloc() for the vma copy for userptr,
allocation from vm_area_cachep is more beneficial.

CC: Hans Verkuil <hans.verkuil@cisco.com>
CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
KyongHo Cho 2015-02-05 02:52:42 -03:00 • committed by Mauro Carvalho Chehab
commit 5ed1c328ea