[PATCH] xfs: destroy mutex pag_ici_reclaim_lock before free xfs_perag_t structure

[Xiongwei Song]

The mutex pag_ici_reclaim_lock of xfs_perag_t structure is initialized in
xfs_initialize_perag. If happen errors in xfs_initialize_perag, or free
resources in xfs_free_perag, wo need to destroy the mutex before free
perag.

Signed-off-by: Xiongwei Song <sxwj...@me.com>
---
 fs/xfs/xfs_mount.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index c879b517cc94..98fd41cbb9e1 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -162,6 +162,7 @@ xfs_free_perag(
                ASSERT(pag);
                ASSERT(atomic_read(&pag->pag_ref) == 0);
                xfs_buf_hash_destroy(pag);
+               mutex_destroy(&pag->pag_ici_reclaim_lock);
                call_rcu(&pag->rcu_head, __xfs_free_perag);
        }
 }
@@ -248,6 +249,7 @@ xfs_initialize_perag(
 out_hash_destroy:
        xfs_buf_hash_destroy(pag);
 out_free_pag:
+       mutex_destroy(&pag->pag_ici_reclaim_lock);
        kmem_free(pag);
 out_unwind_new_pags:
        /* unwind any prior newly initialized pags */
@@ -256,6 +258,7 @@ xfs_initialize_perag(
                if (!pag)
                        break;
                xfs_buf_hash_destroy(pag);
+               mutex_destroy(&pag->pag_ici_reclaim_lock);
                kmem_free(pag);
        }
        return error;
-- 
2.15.1