linux-kernel - Re: [PATCH 1/1] fs: global sync to not clear error status of individual inodes

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Message-ID: <20150915165250.GC1747@two.firstfloor.org>
Date:	Tue, 15 Sep 2015 18:52:50 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Junichi Nomura <j-nomura@...jp.nec.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"andi@...stfloor.org" <andi@...stfloor.org>,
	"fengguang.wu@...el.com" <fengguang.wu@...el.com>,
	"tony.luck@...el.com" <tony.luck@...el.com>,
	"liwanp@...ux.vnet.ibm.com" <liwanp@...ux.vnet.ibm.com>,
	"david@...morbit.com" <david@...morbit.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Subject: Re: [PATCH 1/1] fs: global sync to not clear error status of
 individual inodes

> Is this an actual problem?  Write errors usually indicate that the

There are transaction systems that need to track errors at the level
of the individual IO.  So yes we should guarantee that if a particular
sync failed an error is always returned.

-Andi
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