[PATCH 1/4] change get_super_thawed() to use sb_start/end_write()

[Oleg Nesterov]

Preparation. get_super_thawed() can do sb_start/end_write() with
the same effect, we are going to kill sb_writers->wait_unfrozen.
---
 fs/super.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/super.c b/fs/super.c
index 928c20f..5ea0edd 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -621,8 +621,8 @@ struct super_block *get_super_thawed(struct block_device 
*bdev)
                if (!s || s->s_writers.frozen == SB_UNFROZEN)
                        return s;
                up_read(&s->s_umount);
-               wait_event(s->s_writers.wait_unfrozen,
-                          s->s_writers.frozen == SB_UNFROZEN);
+               sb_start_write(s);
+               sb_end_intwrite(s);
                put_super(s);
        }
 }
-- 
1.5.5.1

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