[PATCH] reiserfs: fix 32-bit overflow in map_block_for_writepage()
I now see another overflow in reiserfs that should lead to data corruptions with files that are bigger than 4G under certain circumstances when using mmap. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -2194,7 +2194,7 @@ static int map_block_for_writepage(struct inode *inode,
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INITIALIZE_PATH(path);
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int pos_in_item;
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int jbegin_count = JOURNAL_PER_BALANCE_CNT;
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loff_t byte_offset = (block << inode->i_sb->s_blocksize_bits) + 1;
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loff_t byte_offset = ((loff_t)block << inode->i_sb->s_blocksize_bits)+1;
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int retval;
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int use_get_block = 0;
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int bytes_copied = 0;
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