From: Jack Morgenstein <jackm@mellanox.co.il>
Date: Thu, 3 Aug 2006 17:56:42 +0000 (-0700)
Subject: IB/uverbs: Avoid a crash on device hot remove
X-Git-Tag: v2.6.18-rc4~50
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd60ae404f104f12369e654af9cf03b1f1047661;p=pandora-kernel.git

IB/uverbs: Avoid a crash on device hot remove

Wait until all users have closed their device context before allowing
device unregistration to complete.  This prevents a crash caused by
referring to stale data structures.

A better solution would be to have a way to revoke contexts rather
than waiting for userspace to close the context, but that's a much
bigger change that will have to wait.  For now let's at least avoid
the crash.

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

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