linux-ext4 - [PATCH 3/3] vfs: Add BUG_ON for delayed and unwritten extents in submit

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Date:	Thu,  7 May 2009 16:09:30 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	cmm@...ibm.com, tytso@....edu, sandeen@...hat.com
Cc:	linux-ext4@...r.kernel.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: [PATCH 3/3] vfs: Add BUG_ON for delayed and unwritten extents in submit_bh

We should not do submit_bh for delayed and unwritten extents. So
add a BUG_ON on them.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
---
 fs/buffer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index b3e5be7..ec480c8 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2931,6 +2931,8 @@ int submit_bh(int rw, struct buffer_head * bh)
 	BUG_ON(!buffer_locked(bh));
 	BUG_ON(!buffer_mapped(bh));
 	BUG_ON(!bh->b_end_io);
+	BUG_ON(buffer_delay(bh));
+	BUG_ON(buffer_unwritten(bh));
 
 	/*
 	 * Mask in barrier bit for a write (could be either a WRITE or a
-- 
1.6.3.rc4

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