From: Sagi Grimberg <sagig@mellanox.com>
Date: Sun, 8 Jun 2014 07:00:59 +0000 (+0300)
Subject: mlx5_core: Fix possible race between mr tree insert/delete
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~269^2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ef07a9f369742a7b18c77484411cff0bd790291;p=pandora-kernel.git

mlx5_core: Fix possible race between mr tree insert/delete

In mlx5_core_destroy_mkey(), we must first remove the mr from the
radix tree and then destroy it.  Otherwise we might hit a race if the
key was reallocated and we attempted to insert it to the radix tree.

Also handle radix tree insert/delete failures.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Eli Cohen <elic@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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