V4L2_BUF_FLAG_MAPPED
#define V4L2_BUFFER_MASK_FLAGS (V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | \
b->flags |= V4L2_BUF_FLAG_MAPPED;
{ V4L2_BUF_FLAG_MAPPED, "MAPPED" }, \