From: Mikulas Patocka <mpatocka@redhat.com>
Date: Mon, 22 Jun 2009 09:12:26 +0000 (+0100)
Subject: dm io: retry after barrier error
X-Git-Tag: v2.6.31-rc1~8^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=51aa322849581f1a73594e48ea0df63f914ee6a2;p=pandora-kernel.git

dm io: retry after barrier error

If -EOPNOTSUPP was returned and the request was a barrier request, retry it
without barrier.

Retry all regions for now. Barriers are submitted only for one-region requests,
so it doesn't matter.  (In the future, retries can be limited to the actual
regions that failed.)

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---

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