From: Pauli Nieminen <suokkos@gmail.com>
Date: Thu, 20 Aug 2009 15:57:35 +0000 (+0300)
Subject: radeon: Add comment to explain logic for freeing dma buffers.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0c0cea250d6615bbd500ac0b61b5d34bc61711cf;p=mesa.git

radeon: Add comment to explain logic for freeing dma buffers.
---

diff --git a/src/mesa/drivers/dri/radeon/radeon_dma.c b/src/mesa/drivers/dri/radeon/radeon_dma.c
index 40082d0798f..7e6b74add86 100644
--- a/src/mesa/drivers/dri/radeon/radeon_dma.c
+++ b/src/mesa/drivers/dri/radeon/radeon_dma.c
@@ -204,6 +204,9 @@ again_alloc:
 		}
 		insert_at_head(&rmesa->dma.reserved, dma_bo);
 	} else {
+		/* We push and pop buffers from end of list so we can keep
+		   counter on unused buffers for later freeing them from
+		   begin of list */
 		struct radeon_dma_bo *dma_bo = last_elem(&rmesa->dma.free);
 		assert(dma_bo->bo->cref == 1);
 		remove_from_list(dma_bo);