linux-kernel - [PATCH] [fs] Add lock annotation to grab

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Message-Id: <1153940237.12517.62.camel@josh-work.beaverton.ibm.com>
Date:	Wed, 26 Jul 2006 11:57:17 -0700
From:	Josh Triplett <josht@...ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...l.org>,
	Alexander Viro <viro@...iv.linux.org.uk>
Subject: [PATCH] [fs] Add lock annotation to grab_super

grab_super gets called with sb_lock held, and releases it.  Add a lock
annotation to this function so that sparse can check callers for lock pairing,
and so that sparse will not complain about this function since it
intentionally uses the lock in this manner.

Signed-off-by: Josh Triplett <josh@...edesktop.org>
---
 fs/super.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/super.c b/fs/super.c
index 6d4e817..97a521c 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -198,7 +198,7 @@ EXPORT_SYMBOL(deactivate_super);
  *	success, 0 if we had failed (superblock contents was already dead or
  *	dying when grab_super() had been called).
  */
-static int grab_super(struct super_block *s)
+static int grab_super(struct super_block *s) __releases(sb_lock)
 {
 	s->s_count++;
 	spin_unlock(&sb_lock);


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