[Xen-changelog] [xen-unstable] tmem: properly drop lock on error path in do_tmem_get()

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Jan Beulich <jbeulich@xxxxxxxx>
# Date 1347365888 -7200
# Node ID 83b97a59888b6d2d0f984b8403bd5764dd55c10c
# Parent  33b8c42a87ec2fa6e6533dd9ee7603f732b168f5
tmem: properly drop lock on error path in do_tmem_get()

Also remove a bogus assertion.

Reported-by: Tim Deegan <tim@xxxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
---


diff -r 33b8c42a87ec -r 83b97a59888b xen/common/tmem.c
--- a/xen/common/tmem.c Tue Sep 11 14:17:59 2012 +0200
+++ b/xen/common/tmem.c Tue Sep 11 14:18:08 2012 +0200
@@ -1790,7 +1790,6 @@ static NOINLINE int do_tmem_get(pool_t *
             list_del(&pgp->us.client_eph_pages);
             
list_add_tail(&pgp->us.client_eph_pages,&client->ephemeral_page_list);
             tmem_spin_unlock(&eph_lists_spinlock);
-            ASSERT(obj != NULL);
             obj->last_client = tmh_get_cli_id_from_current();
         }
     }
@@ -1807,6 +1806,8 @@ static NOINLINE int do_tmem_get(pool_t *
     return 1;
 
 bad_copy:
+    obj->no_evict = 0;
+    tmem_spin_unlock(&obj->obj_spinlock);
     failed_copies++;
     return rc;
 }

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