From: Baokun Li <libaokun@huaweicloud.com>
To: Jingbo Xu <jefflexu@linux.alibaba.com>, netfs@lists.linux.dev
Cc: dhowells@redhat.com, jlayton@kernel.org, zhujia.zj@bytedance.com,
linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, libaokun@huaweicloud.com,
yangerkun <yangerkun@huawei.com>
Subject: Re: [PATCH 02/12] cachefiles: remove err_put_fd tag in cachefiles_ondemand_daemon_read()
Date: Mon, 6 May 2024 12:02:48 +0800 [thread overview]
Message-ID: <aace11c7-d399-6966-02d0-2f08d1fa8b13@huaweicloud.com> (raw)
In-Reply-To: <795cd804-f7a1-44ba-99ac-01070edd5a9a@linux.alibaba.com>
On 2024/5/6 11:55, Jingbo Xu wrote:
>
> On 4/24/24 11:39 AM, libaokun@huaweicloud.com wrote:
>> From: Baokun Li <libaokun1@huawei.com>
>>
>> The err_put_fd tag is only used once, so remove it to make the code more
>> readable.
> I think it's a conventional style to put error handling in the bottom of
> the function so that it could be reused. Indeed currently err_put_fd
> has only one caller but IMHO it's only styling issues.
>
> By the way it seems that this is not needed anymore if patch 9 is applied.
This is just to make patch 3 look clearer, if you insist on dropping it
I will drop it in the next revision.
Cheers,
Baokun
>> ---
>> fs/cachefiles/ondemand.c | 7 +++----
>> 1 file changed, 3 insertions(+), 4 deletions(-)
>>
>> diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
>> index 4ba42f1fa3b4..fd49728d8bae 100644
>> --- a/fs/cachefiles/ondemand.c
>> +++ b/fs/cachefiles/ondemand.c
>> @@ -347,7 +347,9 @@ ssize_t cachefiles_ondemand_daemon_read(struct cachefiles_cache *cache,
>>
>> if (copy_to_user(_buffer, msg, n) != 0) {
>> ret = -EFAULT;
>> - goto err_put_fd;
>> + if (msg->opcode == CACHEFILES_OP_OPEN)
>> + close_fd(((struct cachefiles_open *)msg->data)->fd);
>> + goto error;
>> }
>>
>> /* CLOSE request has no reply */
>> @@ -358,9 +360,6 @@ ssize_t cachefiles_ondemand_daemon_read(struct cachefiles_cache *cache,
>>
>> return n;
>>
>> -err_put_fd:
>> - if (msg->opcode == CACHEFILES_OP_OPEN)
>> - close_fd(((struct cachefiles_open *)msg->data)->fd);
>> error:
>> xa_erase(&cache->reqs, id);
>> req->error = ret;
next prev parent reply other threads:[~2024-05-06 4:02 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 3:39 [PATCH 00/12] cachefiles: some bugfixes and cleanups for ondemand requests libaokun
2024-04-24 3:39 ` [PATCH 01/12] cachefiles: remove request from xarry during flush requests libaokun
2024-04-25 3:13 ` Jia Zhu
2024-05-06 3:48 ` Jingbo Xu
2024-05-06 3:57 ` Baokun Li
2024-05-06 5:50 ` Jingbo Xu
2024-05-07 6:52 ` Baokun Li
2024-04-24 3:39 ` [PATCH 02/12] cachefiles: remove err_put_fd tag in cachefiles_ondemand_daemon_read() libaokun
2024-04-25 3:17 ` Jia Zhu
2024-05-06 3:55 ` Jingbo Xu
2024-05-06 4:02 ` Baokun Li [this message]
2024-04-24 3:39 ` [PATCH 03/12] cachefiles: fix slab-use-after-free in cachefiles_ondemand_get_fd() libaokun
2024-04-24 14:55 ` Jia Zhu
2024-04-25 1:33 ` Baokun Li
2024-04-25 3:39 ` Jia Zhu
2024-04-24 3:39 ` [PATCH 04/12] cachefiles: fix slab-use-after-free in cachefiles_ondemand_daemon_read() libaokun
2024-04-25 3:42 ` [External] " Jia Zhu
2024-04-24 3:39 ` [PATCH 05/12] cachefiles: add output string to cachefiles_obj_[get|put]_ondemand_fd libaokun
2024-04-24 3:39 ` [PATCH 06/12] cachefiles: add consistency check for copen/cread libaokun
2024-05-06 2:31 ` Jingbo Xu
2024-05-06 3:12 ` Baokun Li
2024-04-24 3:39 ` [PATCH 07/12] cachefiles: add spin_lock for cachefiles_ondemand_info libaokun
2024-05-06 2:55 ` Jingbo Xu
2024-05-06 3:23 ` Baokun Li
2024-04-24 3:39 ` [PATCH 08/12] cachefiles: never get a new anon fd if ondemand_id is valid libaokun
2024-05-06 3:09 ` Jingbo Xu
2024-05-07 9:32 ` Baokun Li
2024-04-24 3:39 ` [PATCH 09/12] cachefiles: defer exposing anon_fd until after copy_to_user() succeeds libaokun
2024-05-06 3:24 ` Jingbo Xu
2024-05-06 3:34 ` Baokun Li
2024-04-24 3:39 ` [PATCH 10/12] cachefiles: Set object to close if ondemand_id < 0 in copen libaokun
2024-04-25 4:56 ` Jia Zhu
2024-04-24 3:39 ` [PATCH 11/12] cachefiles: flush all requests after setting CACHEFILES_DEAD libaokun
2024-04-24 3:39 ` [PATCH 12/12] cachefiles: make on-demand read killable libaokun
2024-04-25 5:15 ` Jia Zhu
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