Am 10.07.24 um 15:57 schrieb Lei Liu:
Use vm_insert_page to establish a mapping for the memory allocated
by dmabuf, thus supporting direct I/O read and write; and fix the
issue of incorrect memory statistics after mapping dmabuf memory.
Well big NAK to that! Direct I/O is intentionally disabled on DMA-bufs.
We already discussed enforcing that in the DMA-buf framework and this
patch probably means that we should really do that.
Regards,
Christian.
Lei Liu (2):
mm: dmabuf_direct_io: Support direct_io for memory allocated by dmabuf
mm: dmabuf_direct_io: Fix memory statistics error for dmabuf allocated
memory with direct_io support
drivers/dma-buf/heaps/system_heap.c | 5 +++--
fs/proc/task_mmu.c | 8 +++++++-
include/linux/mm.h | 1 +
mm/memory.c | 15 ++++++++++-----
mm/rmap.c | 9 +++++----
5 files changed, 26 insertions(+), 12 deletions(-)
