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From: Pratik Shinde <pratikshinde320@gmail.com>
Date: Sun, 17 Nov 2019 15:40:43 +0530
Message-ID: <CAGu0czQOorHC=JxQVpWDB2KD0NOzh13OuHj3r_4_U5hCWkkNwQ@mail.gmail.com>
Subject: Support for uncompressed sparse files.
To: Gao Xiang <hsiangkao@aol.com>, Gao Xiang <gaoxiang25@huawei.com>
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Hello Gao,

I have started working on above functionality for erofs.
First thing we need to do is detect sparse files & determine location of
holes in it.

I was thinking of using lseek() with SEEK_HOLE & SEEK_DATA for detecting
holes.
Let me know what you think about the approach OR any other better approach
in your mind.

PS : support for SEEK_HOLE & SEEK_DATA came in 3.4 kernel.

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<div dir=3D"ltr"><div>Hello Gao,</div><div><br></div><div>I have started wo=
rking on above functionality for erofs.</div><div>First thing we need to do=
 is detect sparse files &amp; determine location of holes in it.</div><div>=
<br></div><div>I was thinking of using lseek() with SEEK_HOLE &amp; SEEK_DA=
TA for detecting holes.</div><div>Let me know what you think about the appr=
oach OR any other better approach in your mind.<br></div><div><br></div><di=
v>PS : support for SEEK_HOLE &amp; SEEK_DATA came in 3.4 kernel. <br></div>=
<div> <br></div></div>

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