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From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Eric Paris <eparis@redhat.com>
Cc: kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org,
	hch@infradead.org, akpm@linux-foundation.org
Subject: Re: [PATCH 3/3] fsnotify: use the new open-exec hook for inotify and dnotify
Date: Tue, 16 Dec 2008 11:01:45 +0900 (JST)	[thread overview]
Message-ID: <20081216105624.06D3.KOSAKI.MOTOHIRO@jp.fujitsu.com> (raw)
In-Reply-To: <1229392365.23523.19.camel@localhost.localdomain>

> > they are two different.
> > 
> > 1) Call dnotify_parent() or not
> > 2) Use IN_OPEN or IN_ACCESS
> > 
> > The patch description doesn't explain any reason.
> > 
> > 
> > IOW, IN_ACCESS is usually used by read(). but linux has demand paging
> > mechanism. then exec() only do open and mmap.
> > actual reading is processed by page fault.
> > 
> > I guess you have the reason of this design choice.
> > but it isn't described.
> 
> The original logic was all predicated on my thoughts on how my new
> fanotify would want these events and how I felt that open for exec was
> worth the separate hook.  None of that is useful at this time and in any
> case IN_OPEN makes a lot more sense than IN_ACCESS.  Since you've got me
> looking at these as freestanding patchs I do tend to think that the
> easiest thing for now would be to just drop patch 2 and make the call
> sites from patch 2 call fsnotify_open directly.

it seems make sense. thanks.


> I'll resend in the morning a single patch to call directly to
> fsnotify_open.  (and another single patch to immediately do the rename
> that I want done which I'll send as the full normal diff since it'll be
> freestanding)

you don't need full normal diff. last comment was my mistake. sorry.
I only hope patch separation.





      reply	other threads:[~2008-12-16  2:01 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-15 16:44 [PATCH 0/3] send notification events about exec Eric Paris
2008-12-15 16:44 ` [PATCH 1/3] filesystem notification: create fs/notify to contain all fs notification Eric Paris
2008-12-16  1:02   ` KOSAKI Motohiro
2008-12-16  1:37     ` Eric Paris
2008-12-16  1:46       ` KOSAKI Motohiro
2008-12-15 16:44 ` [PATCH 2/3] fsnotify: sys_execve and sys_uselib do not call into fsnotify Eric Paris
2008-12-16  1:02   ` KOSAKI Motohiro
2008-12-15 16:44 ` [PATCH 3/3] fsnotify: use the new open-exec hook for inotify and dnotify Eric Paris
2008-12-16  1:12   ` KOSAKI Motohiro
2008-12-16  1:52     ` Eric Paris
2008-12-16  2:01       ` KOSAKI Motohiro [this message]

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