Preaparation. Add the trivial helper which does the wakeup.
---
fs/super.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/fs/super.c b/fs/super.c
index 5ea0edd..c23bafc 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1254,6 +1254,12 @@ static void sb_wait_write(struct super_block *sb, int
level)
} while (writers);
}
+static void sb_unlock_frozen(struct super_block *sb)
+{
+ smp_wmb();
+ wake_up(&sb->s_writers.wait_unfrozen);
+}
+
/**
* freeze_super - lock the filesystem and force it into a consistent state
* @sb: the super to lock
@@ -1340,8 +1346,7 @@ int freeze_super(struct super_block *sb)
printk(KERN_ERR
"VFS:Filesystem freeze failed\n");
sb->s_writers.frozen = SB_UNFROZEN;
- smp_wmb();
- wake_up(&sb->s_writers.wait_unfrozen);
+ sb_unlock_frozen(sb);
deactivate_locked_super(sb);
return ret;
}
@@ -1387,8 +1392,7 @@ int thaw_super(struct super_block *sb)
out:
sb->s_writers.frozen = SB_UNFROZEN;
- smp_wmb();
- wake_up(&sb->s_writers.wait_unfrozen);
+ sb_unlock_frozen(sb);
deactivate_locked_super(sb);
return 0;
--
1.5.5.1
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