[PATCH 3/3] videobuf2-core.h: Document the alloc memop size argument as page aligned

[Sakari Ailus <sakari.ailus@linux.intel.com>]

The size argument of the alloc memop, which allocates buffer memory, is
page aligned. Document it as such, as code elsewhere has not taken this
into account.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 include/media/videobuf2-core.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index e86981d615ae4..68b9fe660e4f1 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -54,7 +54,8 @@ struct vb2_threadio_data;
  *		will then be passed as @buf_priv argument to other ops in this
  *		structure. Additional gfp_flags to use when allocating the
  *		are also passed to this operation. These flags are from the
- *		gfp_flags field of vb2_queue.
+ *		gfp_flags field of vb2_queue. The size argument to this function
+ *		shall be *page aligned*.
  * @put:	inform the allocator that the buffer will no longer be used;
  *		usually will result in the allocator freeing the buffer (if
  *		no other users of this buffer are present); the @buf_priv
-- 
2.11.0