ceph: flush pending works before shutdown super
Pending works hold inode references, which cause "Busy inodes after unmount" warning. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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@ -674,6 +674,13 @@ fail:
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return ERR_PTR(err);
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}
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static void flush_fs_workqueues(struct ceph_fs_client *fsc)
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{
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flush_workqueue(fsc->wb_wq);
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flush_workqueue(fsc->pg_inv_wq);
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flush_workqueue(fsc->trunc_wq);
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}
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static void destroy_fs_client(struct ceph_fs_client *fsc)
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{
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dout("destroy_fs_client %p\n", fsc);
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@ -1089,6 +1096,8 @@ static void ceph_kill_sb(struct super_block *s)
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dout("kill_sb %p\n", s);
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ceph_mdsc_pre_umount(fsc->mdsc);
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flush_fs_workqueues(fsc);
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generic_shutdown_super(s);
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fsc->client->extra_mon_dispatch = NULL;
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