Just return the size of the DMA-buf in pages since pages allocated or mapped through DMA-bufs are usually not accounted elsewhere.
Signed-off-by: Christian König christian.koenig@amd.com --- drivers/dma-buf/dma-buf.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index 630133284e2b..16162ec3538c 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -494,6 +494,11 @@ static void dma_buf_show_fdinfo(struct seq_file *m, struct file *file) spin_unlock(&dmabuf->name_lock); }
+static long dma_buf_file_rss(struct file *file) +{ + 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, @@ -502,6 +507,7 @@ static const struct file_operations dma_buf_fops = { .unlocked_ioctl = dma_buf_ioctl, .compat_ioctl = compat_ptr_ioctl, .show_fdinfo = dma_buf_show_fdinfo, + .file_rss = dma_buf_file_rss, };
/*