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From: Evgeniy Polyakov <zbr-i6C2adt8DTjR7s880joybQ@public.gmane.org>
To: John McCutchan <john-jueV0HHMeujJJrXXpGQQMAC/G2K4zDHf@public.gmane.org>
Cc: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
	mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
	Robert Love <rlove-L7G0xEPcOZbYtjvyW6yDsg@public.gmane.org>,
	linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Andrew Morton
	<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Subject: Re: [take 3] Use pid in inotify events.
Date: Mon, 24 Nov 2008 10:30:19 +0300	[thread overview]
Message-ID: <20081124073018.GC10119@ioremap.net> (raw)
In-Reply-To: <cfec22b10811232108u3ade8b66w58999054c03549fc-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

Hi John.

On Sun, Nov 23, 2008 at 09:08:05PM -0800, John McCutchan (john-jueV0HHMeujJJrXXpGQQMAC/G2K4zDHf@public.gmane.org) wrote:
> At this point I don't really want to see changes made to inotify. But,
> for arguments sake, why not something like inotify_init1 that takes a
> flag EXTENDED_EVENT which causes a larger event structure to be used.
> Something like,
> 
> struct inotify_event_extended
> {
>   s32 wd;
>   u32 mask;
>   u32 cookie;
>   u32 data[4];
>   char path[0];
> }
> 
> The data array could be used to store arbitrary extra information,
> specified by flags.

What will happen when above array is not enough to store needed info?
Although I do not see any reason to send start/offset for the IO itself,
but if it will be decided to do so, above array already is not large
enough. I think I will cook up preliminary patch to add nested
attributes into event structure like I described previously in the
thread to get people involved with working example.

-- 
	Evgeniy Polyakov
--
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WARNING: multiple messages have this Message-ID (diff)
From: Evgeniy Polyakov <zbr@ioremap.net>
To: John McCutchan <john@johnmccutchan.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	mtk.manpages@gmail.com, Christoph Hellwig <hch@lst.de>,
	Robert Love <rlove@rlove.org>,
	linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [take 3] Use pid in inotify events.
Date: Mon, 24 Nov 2008 10:30:19 +0300	[thread overview]
Message-ID: <20081124073018.GC10119@ioremap.net> (raw)
In-Reply-To: <cfec22b10811232108u3ade8b66w58999054c03549fc@mail.gmail.com>

Hi John.

On Sun, Nov 23, 2008 at 09:08:05PM -0800, John McCutchan (john@johnmccutchan.com) wrote:
> At this point I don't really want to see changes made to inotify. But,
> for arguments sake, why not something like inotify_init1 that takes a
> flag EXTENDED_EVENT which causes a larger event structure to be used.
> Something like,
> 
> struct inotify_event_extended
> {
>   s32 wd;
>   u32 mask;
>   u32 cookie;
>   u32 data[4];
>   char path[0];
> }
> 
> The data array could be used to store arbitrary extra information,
> specified by flags.

What will happen when above array is not enough to store needed info?
Although I do not see any reason to send start/offset for the IO itself,
but if it will be decided to do so, above array already is not large
enough. I think I will cook up preliminary patch to add nested
attributes into event structure like I described previously in the
thread to get people involved with working example.

-- 
	Evgeniy Polyakov

  parent reply	other threads:[~2008-11-24  7:30 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <acdcfe7e0811081035l56eedf05x8b3b7ee2fc01eee6@mail.gmail.com>
     [not found] ` <acdcfe7e0811081035l56eedf05x8b3b7ee2fc01eee6-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 18:40   ` [1/1] Use pid in inotify events Evgeniy Polyakov
2008-11-08 18:40     ` Evgeniy Polyakov
     [not found]     ` <20081108184013.GA11888-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-08 22:03       ` Evgeniy Polyakov
2008-11-08 22:03         ` Evgeniy Polyakov
2008-11-10 15:13   ` [take 2] " Evgeniy Polyakov
2008-11-10 15:13     ` Evgeniy Polyakov
2008-11-16 23:24   ` [take 3] " Evgeniy Polyakov
2008-11-16 23:24     ` Evgeniy Polyakov
     [not found]     ` <20081116232450.GA13547-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-17 16:59       ` Michael Kerrisk
2008-11-17 16:59         ` Michael Kerrisk
     [not found]         ` <cfd18e0f0811170859w1d3f903ej1d5626f2d2bf4496-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-17 17:15           ` Evgeniy Polyakov
2008-11-17 17:15             ` Evgeniy Polyakov
     [not found]             ` <20081117171508.GA564-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-17 17:23               ` Michael Kerrisk
2008-11-17 17:23                 ` Michael Kerrisk
     [not found]                 ` <cfd18e0f0811170923q6b72bd0fn9d319bbceb8fa6a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-17 17:52                   ` Evgeniy Polyakov
2008-11-17 17:52                     ` Evgeniy Polyakov
     [not found]                     ` <20081117175212.GA2224-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-20 13:09                       ` Pavel Machek
2008-11-20 13:09                         ` Pavel Machek
     [not found]                         ` <20081120130902.GA1408-+ZI9xUNit7I@public.gmane.org>
2008-11-21 14:03                           ` Evgeniy Polyakov
2008-11-21 14:03                             ` Evgeniy Polyakov
     [not found]                             ` <20081121140325.GA12384-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-21 14:20                               ` Michael Kerrisk
2008-11-21 14:20                                 ` Michael Kerrisk
     [not found]                                 ` <517f3f820811210620o34307610hf926bbe3b3828e8c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-21 14:37                                   ` Evgeniy Polyakov
2008-11-21 14:37                                     ` Evgeniy Polyakov
2008-11-21 14:30                               ` Robert Love
2008-11-21 14:30                                 ` Robert Love
     [not found]                                 ` <acdcfe7e0811210630s65404ef5pf2b94731c2a872e1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-21 14:53                                   ` Evgeniy Polyakov
2008-11-21 14:53                                     ` Evgeniy Polyakov
2008-11-21 14:57                                   ` Pavel Machek
2008-11-21 14:57                                     ` Pavel Machek
     [not found]                                     ` <20081121145709.GC1554-+ZI9xUNit7I@public.gmane.org>
2008-11-21 15:08                                       ` Evgeniy Polyakov
2008-11-21 15:08                                         ` Evgeniy Polyakov
2008-11-18 13:19           ` Christoph Hellwig
2008-11-18 13:19             ` Christoph Hellwig
     [not found]             ` <20081118131937.GC16944-jcswGhMUV9g@public.gmane.org>
2008-11-19 14:05               ` Evgeniy Polyakov
2008-11-19 14:05                 ` Evgeniy Polyakov
     [not found]                 ` <cfd18e0f0811190634g276b4a2dm5b3d5de25a5c9222@mail.gmail.com>
     [not found]                   ` <cfd18e0f0811190634g276b4a2dm5b3d5de25a5c9222-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-19 14:43                     ` Michael Kerrisk
2008-11-19 14:43                       ` Michael Kerrisk
2008-11-20 19:17                       ` Ville Syrjälä
2008-11-19 14:53                     ` Evgeniy Polyakov
2008-11-19 14:53                       ` Evgeniy Polyakov
     [not found]                       ` <20081119145351.GA2652-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-20 22:34                         ` John McCutchan
2008-11-20 22:34                           ` John McCutchan
     [not found]                           ` <cfec22b10811201434v2230d11dvc9797018e433fd20-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-20 23:06                             ` Evgeniy Polyakov
2008-11-20 23:06                               ` Evgeniy Polyakov
     [not found]                               ` <20081120230612.GB6536-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-21 18:39                                 ` Arnd Bergmann
2008-11-21 18:39                                   ` Arnd Bergmann
2008-11-22  7:12                                   ` David Newall
     [not found]                                     ` <4927B0D5.4020907-KzQzY1MbaKjAHznzqCTclw@public.gmane.org>
2008-11-22  9:41                                       ` Evgeniy Polyakov
2008-11-22  9:41                                         ` Evgeniy Polyakov
     [not found]                                         ` <20081122094144.GB12543-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-22 11:41                                           ` David Newall
2008-11-22 11:41                                             ` David Newall
     [not found]                                   ` <200811211939.46812.arnd-r2nGTMty4D4@public.gmane.org>
2008-11-22  9:37                                     ` Evgeniy Polyakov
2008-11-22  9:37                                       ` Evgeniy Polyakov
     [not found]                                       ` <20081122093749.GA12543-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-24  5:08                                         ` John McCutchan
2008-11-24  5:08                                           ` John McCutchan
     [not found]                                           ` <cfec22b10811232108u3ade8b66w58999054c03549fc-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-24  7:30                                             ` Evgeniy Polyakov [this message]
2008-11-24  7:30                                               ` Evgeniy Polyakov

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