From: Jonathan Lallinger <jonathan@ogc.us>
Date: Thu, 29 Sep 2011 07:58:41 +0000 (+0000)
Subject: RDSRDMA: Fix cleanup of rds_iw_mr_pool
X-Git-Tag: v3.1-rc9~1^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85a64889492b45f931ddac87ec09d84aa7347ee1;p=pandora-kernel.git

RDSRDMA: Fix cleanup of rds_iw_mr_pool

In the rds_iw_mr_pool struct the free_pinned field keeps track of
memory pinned by free MRs. While this field is incremented properly
upon allocation, it is never decremented upon unmapping. This would
cause the rds_rdma module to crash the kernel upon unloading, by
triggering the BUG_ON in the rds_iw_destroy_mr_pool function.

This change keeps track of the MRs that become unpinned, so that
free_pinned can be decremented appropriately.

Signed-off-by: Jonathan Lallinger <jonathan@ogc.us>
Signed-off-by: Steve Wise <swise@ogc.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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