linux-kernel - Re: f_op->read seems to be always NULL since Linux 4.1

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Date:	Sun, 28 Jun 2015 09:38:38 +0200
From:	Richard Weinberger <richard@....at>
To:	Andreas Hartmann <andihartmann@...19freenet.de>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: f_op->read seems to be always NULL since Linux 4.1

Am 28.06.2015 um 08:36 schrieb Andreas Hartmann:
> On Sat, Jun 27, 2015 at 8:10 PM, Richard Weinberger wrote:
>> On Sat, Jun 27, 2015 at 7:32 PM, Andreas Hartmann
>> <andihartmann@...19freenet.de> wrote:
> [...]
>> See __vfs_read().
>> Your module most not rely on such internals.
> 
> Thanks for your hint to the function which exists since 3.19.
> 
> Is there a site out there which lists all relevant changes done for each kernel version and the recommendations how to correctly handle them?

There is no such site.
The only way do deal with the ever changing in-kernel ABI is
bringing your code mainline.

Thanks,
//richard
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