* [PATCH] io_uring: Optimizing return value
@ 2022-08-12 2:00 Zhang chunchao
2022-08-12 2:02 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Zhang chunchao @ 2022-08-12 2:00 UTC (permalink / raw)
To: axboe, asml.silence; +Cc: io-uring, linux-kernel, kernel, Zhang chunchao
Delete return value ret Initialize assignment, change return value ret
to EOPNOTSUPP when IO_IS_URING_FOPS failed.
Signed-off-by: Zhang chunchao <[email protected]>
---
io_uring/io_uring.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index b54218da075c..1b56f3d1a47b 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -3859,16 +3859,17 @@ SYSCALL_DEFINE4(io_uring_register, unsigned int, fd, unsigned int, opcode,
void __user *, arg, unsigned int, nr_args)
{
struct io_ring_ctx *ctx;
- long ret = -EBADF;
+ long ret;
struct fd f;
f = fdget(fd);
if (!f.file)
return -EBADF;
- ret = -EOPNOTSUPP;
- if (!io_is_uring_fops(f.file))
+ if (!io_is_uring_fops(f.file)) {
+ ret = -EOPNOTSUPP;
goto out_fput;
+ }
ctx = f.file->private_data;
--
2.18.2
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] io_uring: Optimizing return value
2022-08-12 2:00 [PATCH] io_uring: Optimizing return value Zhang chunchao
@ 2022-08-12 2:02 ` Jens Axboe
0 siblings, 0 replies; 2+ messages in thread
From: Jens Axboe @ 2022-08-12 2:02 UTC (permalink / raw)
To: Zhang chunchao, asml.silence; +Cc: io-uring, linux-kernel, kernel
On 8/11/22 8:00 PM, Zhang chunchao wrote:
> Delete return value ret Initialize assignment, change return value ret
> to EOPNOTSUPP when IO_IS_URING_FOPS failed.
>
> Signed-off-by: Zhang chunchao <[email protected]>
> ---
> io_uring/io_uring.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
> index b54218da075c..1b56f3d1a47b 100644
> --- a/io_uring/io_uring.c
> +++ b/io_uring/io_uring.c
> @@ -3859,16 +3859,17 @@ SYSCALL_DEFINE4(io_uring_register, unsigned int, fd, unsigned int, opcode,
> void __user *, arg, unsigned int, nr_args)
> {
> struct io_ring_ctx *ctx;
> - long ret = -EBADF;
> + long ret;
> struct fd f;
>
> f = fdget(fd);
> if (!f.file)
> return -EBADF;
>
> - ret = -EOPNOTSUPP;
> - if (!io_is_uring_fops(f.file))
> + if (!io_is_uring_fops(f.file)) {
> + ret = -EOPNOTSUPP;
> goto out_fput;
> + }
>
> ctx = f.file->private_data;
As mentioned in the other reply, just do the first part. We don't need
to move the other one, I think you'll find the generated code is the
same.
I'd title the commit as "io_uring: remove useless setting of 'ret'".
--
Jens Axboe
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-08-12 2:00 [PATCH] io_uring: Optimizing return value Zhang chunchao
2022-08-12 2:02 ` Jens Axboe
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