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ext4: drop ec_type from the ext4_ext_cache structure
We can encode the ec_type information by using ee_len == 0 to denote EXT4_EXT_CACHE_NO, ee_start == 0 to denote EXT4_EXT_CACHE_GAP, and if neither is true, then the cache type must be EXT4_EXT_CACHE_EXTENT. This allows us to reduce the size of ext4_ext_inode by another 8 bytes. (ec_type is 4 bytes, plus another 4 bytes of padding) Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Theodore Ts'o
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Jan 10, 2011
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