[PATCH] dma-buf: Use atomic64_inc_return() in dma_buf_getfile()
From: Uros Bizjak
Date: Mon Oct 07 2024 - 04:40:55 EST
Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref)
to use optimized implementation and ease register pressure around
the primitive for targets that implement optimized variant.
Signed-off-by: Uros Bizjak <ubizjak@xxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>
---
drivers/dma-buf/dma-buf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 8892bc701a66..a3649db76add 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -558,7 +558,7 @@ static struct file *dma_buf_getfile(size_t size, int flags)
* Override ->i_ino with the unique and dmabuffs specific
* value.
*/
- inode->i_ino = atomic64_add_return(1, &dmabuf_inode);
+ inode->i_ino = atomic64_inc_return(&dmabuf_inode);
flags &= O_ACCMODE | O_NONBLOCK;
file = alloc_file_pseudo(inode, dma_buf_mnt, "dmabuf",
flags, &dma_buf_fops);
--
2.46.2