linux-kernel - ext4 counts SSD discards as writes (output of tune2fs -l /dev/xxx)

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Message-ID: <1362264347.3893.YahooMailNeo@web172003.mail.ir2.yahoo.com>
Date:	Sat, 2 Mar 2013 22:45:47 +0000 (GMT)
From:	A B <spinflipper4@...oo.co.uk>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: ext4 counts SSD discards as writes (output of tune2fs -l /dev/xxx)

Hi,

I just realized that ext4 seems to count discards on SSDs (done using fstrim command) as writes in the global fs statistics, which can be viewed using tune2fs -l /dev/xxx. This is certainly a minor problem, but is this the intended ext4 behaviour?
Best regards,
Max
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