From: Uros Bizjak Date: Mon, 7 Oct 2024 08:37:52 +0000 (+0200) Subject: dma-buf: Use atomic64_inc_return() in dma_buf_getfile() X-Git-Tag: v6.13-rc1~122^2~18^2~8 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0654196d7ea20934f90a87d1b523ef3b77fb021b;p=thirdparty%2Fkernel%2Flinux.git dma-buf: Use atomic64_inc_return() in dma_buf_getfile() 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 Cc: Sumit Semwal Cc: "Christian König" Signed-off-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/msgid/20241007083921.47525-1-ubizjak@gmail.com --- diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index 2472eb96c4b72..5ad0e9e2e1b93 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -559,7 +559,7 @@ 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);