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gfs2: fix to detect failure of register_shrinker 

register_shrinker can fail after commit 1d3d4437ea ("vmscan: per-node
deferred work"), we should detect the failure of it, otherwise we may
fail to register shrinker after gfs2 module was been inited successfully.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
steinar/wifi_calib_4_9_kernel
Chao Yu 2016-09-21 12:09:40 -05:00 committed by Bob Peterson
parent 23e5671a79
commit e0d735c1cc
2 changed files with 10 additions and 2 deletions
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8
fs/gfs2/glock.c
View File

@ -1781,7 +1781,13 @@ int __init gfs2_glock_init(void)
return -ENOMEM;
}
register_shrinker(&glock_shrinker);
ret = register_shrinker(&glock_shrinker);
if (ret) {
destroy_workqueue(gfs2_delete_workqueue);
destroy_workqueue(glock_workqueue);
rhashtable_destroy(&gl_hash_table);
return ret;
}
return 0;
}

4
fs/gfs2/main.c
View File

@ -145,7 +145,9 @@ static int __init init_gfs2_fs(void)
if (!gfs2_qadata_cachep)
goto fail;
register_shrinker(&gfs2_qd_shrinker);
error = register_shrinker(&gfs2_qd_shrinker);
if (error)
goto fail;
error = register_filesystem(&gfs2_fs_type);
if (error)