netdev - Re: [PATCH v3 10/11] net: sched: atomically check-allocate action

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Message-ID: <20180528152458.GH2173@nanopsycho>
Date:   Mon, 28 May 2018 17:24:58 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Vlad Buslov <vladbu@...lanox.com>
Cc:     netdev@...r.kernel.org, jhs@...atatu.com, xiyou.wangcong@...il.com,
        davem@...emloft.net, ast@...nel.org, daniel@...earbox.net,
        kliteyn@...lanox.com
Subject: Re: [PATCH v3 10/11] net: sched: atomically check-allocate action

Sun, May 27, 2018 at 11:17:28PM CEST, vladbu@...lanox.com wrote:
>Implement function that atomically checks if action exists and either takes
>reference to it, or allocates idr slot for action index to prevent
>concurrent allocations of actions with same index. Use EBUSY error pointer
>to indicate that idr slot is reserved.
>
>Implement cleanup helper function that removes temporary error pointer from
>idr. (in case of error between idr allocation and insertion of newly
>created action to specified index)
>
>Refactor all action init functions to insert new action to idr using this
>API.
>
>Signed-off-by: Vlad Buslov <vladbu@...lanox.com>

Signed-off-by: Jiri Pirko <jiri@...lanox.com>