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>
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@ -88,8 +88,9 @@ void udf_discard_prealloc(struct inode * inode)
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{
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{
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etype = netype;
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etype = netype;
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lbcount += elen;
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lbcount += elen;
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if (lbcount > inode->i_size && lbcount - inode->i_size < inode->i_sb->s_blocksize)
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if (lbcount > inode->i_size && lbcount - elen < inode->i_size)
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{
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{
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WARN_ON(lbcount - inode->i_size >= inode->i_sb->s_blocksize);
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nelen = elen - (lbcount - inode->i_size);
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nelen = elen - (lbcount - inode->i_size);
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epos.offset -= adsize;
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epos.offset -= adsize;
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extent_trunc(inode, &epos, eloc, etype, elen, nelen);
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extent_trunc(inode, &epos, eloc, etype, elen, nelen);
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@ -119,6 +120,7 @@ void udf_discard_prealloc(struct inode * inode)
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}
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}
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UDF_I_LENEXTENTS(inode) = lbcount;
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UDF_I_LENEXTENTS(inode) = lbcount;
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WARN_ON(lbcount != inode->i_size);
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brelse(epos.bh);
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brelse(epos.bh);
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}
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}
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