From 948b9b2c967c3bec6136b2dbb9e1c12f62e03efa Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Tue, 8 May 2007 00:35:18 -0700
Subject: [PATCH] udf: add assertions
Add a few assertions into udf_discard_prealloc() to check that the file is
sane (mostly helps debugging further patches ;).
Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/udf/truncate.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/udf/truncate.c b/fs/udf/truncate.c
index 0449b2216e716..0e328cdc9a454 100644
--- a/fs/udf/truncate.c
+++ b/fs/udf/truncate.c
@@ -88,8 +88,9 @@ void udf_discard_prealloc(struct inode * inode)
{
etype = netype;
lbcount += elen;
- if (lbcount > inode->i_size && lbcount - inode->i_size < inode->i_sb->s_blocksize)
+ if (lbcount > inode->i_size && lbcount - elen < inode->i_size)
{
+ WARN_ON(lbcount - inode->i_size >= inode->i_sb->s_blocksize);
nelen = elen - (lbcount - inode->i_size);
epos.offset -= adsize;
extent_trunc(inode, &epos, eloc, etype, elen, nelen);
@@ -119,6 +120,7 @@ void udf_discard_prealloc(struct inode * inode)
}
UDF_I_LENEXTENTS(inode) = lbcount;
+ WARN_ON(lbcount != inode->i_size);
brelse(epos.bh);
}
--
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