linux-ext4 - Two questions on sparse files

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Message-ID: <f20639eaa10eaa327dc9a294164b731215d5212f.camel@web.de>
Date: Wed, 15 Jan 2025 09:34:06 +0100
From: Andreas Wagner <thewand@....de>
To: linux-ext4@...r.kernel.org
Cc: linux-fsdevel@...r.kernel.org
Subject: Two questions on sparse files

Hello,

I have two questions on sparse files:

1. Do they really - as media and Wikipedia suggest - reduce allocated
filesize if the file is sparse? 
2. Are the blocks of the file in random order?

Thanks in advance and regards,
Andreas Wagner