UBIFS: add debugfs support
We need to have a possibility to see various UBIFS variables
and ask UBIFS to dump various information. Debugfs is what
we need.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index ad44822..2dbaa4f 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1258,6 +1258,10 @@
}
}
+ err = dbg_debugfs_init_fs(c);
+ if (err)
+ goto out_infos;
+
err = dbg_check_filesystem(c);
if (err)
goto out_infos;
@@ -1369,6 +1373,7 @@
dbg_gen("un-mounting UBI device %d, volume %d", c->vi.ubi_num,
c->vi.vol_id);
+ dbg_debugfs_exit_fs(c);
spin_lock(&ubifs_infos_lock);
list_del(&c->infos_list);
spin_unlock(&ubifs_infos_lock);
@@ -2079,11 +2084,17 @@
err = ubifs_compressors_init();
if (err)
+ goto out_shrinker;
+
+ err = dbg_debugfs_init();
+ if (err)
goto out_compr;
return 0;
out_compr:
+ ubifs_compressors_exit();
+out_shrinker:
unregister_shrinker(&ubifs_shrinker_info);
kmem_cache_destroy(ubifs_inode_slab);
out_reg:
@@ -2098,6 +2109,7 @@
ubifs_assert(list_empty(&ubifs_infos));
ubifs_assert(atomic_long_read(&ubifs_clean_zn_cnt) == 0);
+ dbg_debugfs_exit();
ubifs_compressors_exit();
unregister_shrinker(&ubifs_shrinker_info);
kmem_cache_destroy(ubifs_inode_slab);