From mboxrd@z Thu Jan  1 00:00:00 1970
From: Namjae Jeon <namjae.jeon@samsung.com>
Subject: Re: [PATCH v5 10/10] manpage: update FALLOC_FL_COLLAPSE_RANGE flag in
 fallocate
Date: Tue, 27 May 2014 14:15:27 +0900
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Cc: linux-fsdevel@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>,
	'Christoph Hellwig' <hch@infradead.org>,
	Ashish Sangwan <a.sangwan@samsung.com>
To: Dave Chinner <david@fromorbit.com>
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> [ Hmmmm -  I just had a great idea - removing entire directory
> contents via punching blocks. No more "remove one dirent at a time"
> for rm -rf, just punch the directory from start to end and there
> goes millions of directory entries in a single syscall and a handful
> of transactions.  FALLOC_FL_DIR_PUNCH, anyone? ]
Hi Dave.

I think that it is a great idea also.
BTW, FALLOC_FL_DIR_PUNCH should remove sub-directories using recursive function.
If depth is very deep, Is it possible to make stack overflow issue ?

Thanks.