Re: [PATCH] fs/buffer: adjust the order of might_sleep() in __getblk_gfp()

[gouhao]

>On Thu, Mar 23, 2023 at 05:37:52PM +0800, gouhao@xxxxxxxxxxxxx wrote:
>> From: Gou Hao <gouhao@xxxxxxxxxxxxx>
>> 
>> If 'bh' is found in cache, just return directly.
>> might_sleep() is only required on slow paths.
>
>You're missing the point.  The caller can't know whether the slow or
>fast path will be taken.  So it must _never_ call this function if it
>cannot sleep.
I see. Thank you for your explanation! :)