linux-kernel - Re: [PATCH AUTOSEL 4.14 50/95] fsnotify: generalize handling of extra event flags

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Message-ID: <20190507162942.GD1747@sasha-vm>
Date:   Tue, 7 May 2019 12:29:42 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Jan Kara <jack@...e.cz>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Amir Goldstein <amir73il@...il.com>,
        Sasha Levin <alexander.levin@...rosoft.com>,
        linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 4.14 50/95] fsnotify: generalize handling of
 extra event flags

On Tue, May 07, 2019 at 03:23:30PM +0200, Jan Kara wrote:
>On Tue 07-05-19 01:37:39, Sasha Levin wrote:
>> From: Amir Goldstein <amir73il@...il.com>
>>
>> [ Upstream commit 007d1e8395eaa59b0e7ad9eb2b53a40859446a88 ]
>>
>> FS_EVENT_ON_CHILD gets a special treatment in fsnotify() because it is
>> not a flag specifying an event type, but rather an extra flags that may
>> be reported along with another event and control the handling of the
>> event by the backend.
>>
>> FS_ISDIR is also an "extra flag" and not an "event type" and therefore
>> desrves the same treatment. With inotify/dnotify backends it was never
>> possible to set FS_ISDIR in mark masks, so it did not matter.
>> With fanotify backend, mark adding code jumps through hoops to avoid
>> setting the FS_ISDIR in the commulative object mask.
>>
>> Separate the constant ALL_FSNOTIFY_EVENTS to ALL_FSNOTIFY_FLAGS and
>> ALL_FSNOTIFY_EVENTS, so the latter can be used to test for specific
>> event types.
>>
>> Signed-off-by: Amir Goldstein <amir73il@...il.com>
>> Signed-off-by: Jan Kara <jack@...e.cz>
>> Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
>
>Sasha, why did you select this patch? It is just a cleanup with no user
>visible effect and was done mostly to simplify implementing following
>features...

Sigh, my script picked up the patch after this one (by mistake). I've
dropped that one but missed this one twice(!). Thanks for the heads-up,
I'll drop it.

--
Thanks,
Sasha