19 Jun
2024
19 Jun
'24
12:16 p.m.
Le mercredi 19 juin 2024 à 13:43 +0200, Markus Elfring a écrit :
…
+++ b/drivers/iio/industrialio-buffer.c
…
+static void iio_buffer_dmabuf_release(struct kref *ref) +{
…
- dma_resv_lock(dmabuf->resv, NULL);
- dma_buf_unmap_attachment(attach, priv->sgt, priv->dir);
- dma_resv_unlock(dmabuf->resv);
…
Under which circumstances will another lock guard become applicable? https://elixir.bootlin.com/linux/v6.10-rc4/source/include/linux/cleanup.h#L1...
As soon as "struct dma_resv" gets a DEFINE_GUARD().
-Paul