From: "David Wang" <00107082@163.com>
To: "Oliver Neukum" <oneukum@suse.com>
Cc: mathias.nyman@intel.com, gregkh@linuxfoundation.org,
stern@rowland.harvard.edu, surenb@google.com,
kent.overstreet@linux.dev, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] USB: core: add a memory pool to urb for host-controller private data
Date: Tue, 13 May 2025 19:12:47 +0800 (CST) [thread overview]
Message-ID: <7259897e.9f89.196c958e24d.Coremail.00107082@163.com> (raw)
In-Reply-To: <3fa2cbc3-fe81-4364-96c1-b753c52ddc16@suse.com>
At 2025-05-13 19:02:42, "Oliver Neukum" <oneukum@suse.com> wrote:
>
>
>On 13.05.25 11:49, David Wang wrote:
>
>> Hi, I have one question about mem flags.
>> If usb_submit_urb wants a memory in context of flags A, say GFP_ATOMIC, but I already have a memory alloc with flags B and its size
>> is big enough, is it safe to return this memory to usb_submit_urb which is in the context of flags A?
>
>Yes, that is perfectly safe.
>
> HTH
> Oliver
Copy that~
Thanks
David
next prev parent reply other threads:[~2025-05-13 11:14 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-12 15:07 [RFC] USB: core/xhci: add a buffer in urb for host controller private data David Wang
2025-05-12 15:34 ` Alan Stern
2025-05-12 16:19 ` David Wang
2025-05-13 5:54 ` [PATCH 1/2] USB: core: add a memory pool to urb for host-controller " David Wang
2025-05-13 8:11 ` Oliver Neukum
2025-05-13 8:23 ` David Wang
2025-05-13 8:46 ` Oliver Neukum
2025-05-13 8:53 ` David Wang
2025-05-13 9:49 ` David Wang
2025-05-13 11:02 ` Oliver Neukum
2025-05-13 11:12 ` David Wang [this message]
2025-05-13 5:55 ` [PATCH 2/2] USB: xhci: use urb hcpriv mempool for " David Wang
2025-05-13 8:21 ` Oliver Neukum
2025-05-13 8:31 ` David Wang
2025-05-13 9:00 ` Oliver Neukum
2025-05-13 9:27 ` [RFC] USB: core/xhci: add a buffer in urb for host controller " Mathias Nyman
2025-05-13 9:41 ` David Wang
2025-05-13 11:38 ` [PATCH v2 1/2] USB: core: add a memory pool to urb for host-controller " David Wang
2025-05-13 14:25 ` Alan Stern
2025-05-13 14:41 ` David Wang
2025-05-13 15:37 ` Alan Stern
2025-05-13 16:35 ` David Wang
2025-05-13 18:21 ` Alan Stern
2025-05-13 18:48 ` David Wang
2025-05-13 19:46 ` Alan Stern
2025-05-14 11:27 ` Oliver Neukum
2025-05-14 6:44 ` David Wang
2025-05-14 7:29 ` Greg KH
2025-05-14 8:50 ` David Wang
2025-05-14 9:34 ` Oliver Neukum
2025-05-17 9:09 ` David Wang
2025-05-14 11:23 ` Oliver Neukum
2025-05-14 11:51 ` David Wang
2025-05-14 12:03 ` Oliver Neukum
2025-05-14 12:14 ` David Wang
2025-05-16 17:13 ` David Wang
2025-05-13 11:38 ` [PATCH v2 2/2] USB: xhci: use urb hcpriv mempool for " David Wang
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