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-rw-r--r--fs/udf/truncate.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/udf/truncate.c b/fs/udf/truncate.c
index 0449b2216e7..0e328cdc9a4 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);
}