For now just return the size of the DMA-buf in pages as badness in the OOM situation. That should probably be extended to be in control of the exporter in the future.
Signed-off-by: Christian König <[email protected]> --- drivers/dma-buf/dma-buf.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index a2f9a1815e38..bdd4e8767cd3 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -388,6 +388,12 @@ static void dma_buf_show_fdinfo(struct seq_file *m, struct file *file) spin_unlock(&dmabuf->name_lock); } +static long dma_buf_oom_badness(struct file *file) +{ + /* TODO: This should probably be controlled by a flag */ + return i_size_read(file_inode(file)) >> PAGE_SHIFT; +} + static const struct file_operations dma_buf_fops = { .release = dma_buf_file_release, .mmap = dma_buf_mmap_internal, @@ -396,6 +402,7 @@ static const struct file_operations dma_buf_fops = { .unlocked_ioctl = dma_buf_ioctl, .compat_ioctl = compat_ptr_ioctl, .show_fdinfo = dma_buf_show_fdinfo, + .oom_badness = dma_buf_oom_badness, }; /* -- 2.25.1
