linux-ext4 - Query about reflink support for EXT4

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Message-ID: <5A90DA2E42F8AE43BC4A093BF06788481ABC752F@SHSMSX104.ccr.corp.intel.com>
Date:   Thu, 12 Apr 2018 02:09:12 +0000
From:   "Du, Fan" <fan.du@...el.com>
To:     "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
CC:     "Du, Fan" <fan.du@...el.com>
Subject: Query about reflink support for EXT4

Hi EXT4 folks

May I ask is there any plan to support reflink support in EXT4?
It's good mechanism to create database snapshot and 
deduplication as well. I googled one proposal here[1] in 2014,
but seems dropped.

Can you please shed some light here about the background?

[1]:
https://www.spinics.net/lists/linux-ext4/msg43427.html