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authorDave Chinner <dchinner@redhat.com>2010-11-08 08:55:04 +0000
committerAlex Elder <aelder@sgi.com>2010-11-10 12:00:48 -0600
commitf83282a8ef799c0bdcb0c32971487087da1bc216 (patch)
tree953c706c4c96a85348cc6e1404436411919b6d80 /fs/xfs/xfs_mount.c
parent6762b938eac878a30a90e770ac655874c36bc642 (diff)
xfs: fix per-ag reference counting in inode reclaim tree walking
The walk fails to decrement the per-ag reference count when the non-blocking walk fails to obtain the per-ag reclaim lock, leading to an assert failure on debug kernels when unmounting a filesystem. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index b1498ab5a399..19e9dfa1c254 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -275,6 +275,7 @@ xfs_free_perag(
pag = radix_tree_delete(&mp->m_perag_tree, agno);
spin_unlock(&mp->m_perag_lock);
ASSERT(pag);
+ ASSERT(atomic_read(&pag->pag_ref) == 0);
call_rcu(&pag->rcu_head, __xfs_free_perag);
}
}