From b05e6ae58a13b56e3e11882c1fc71948c9b29760 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Mon, 10 Jan 2011 12:13:26 -0500 Subject: 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" --- fs/ext4/ext4_extents.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'fs/ext4/ext4_extents.h') diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h index dfdda176692..2e29abb30f7 100644 --- a/fs/ext4/ext4_extents.h +++ b/fs/ext4/ext4_extents.h @@ -119,10 +119,6 @@ struct ext4_ext_path { * structure for external API */ -#define EXT4_EXT_CACHE_NO 0 -#define EXT4_EXT_CACHE_GAP 1 -#define EXT4_EXT_CACHE_EXTENT 2 - /* * to be called by ext4_ext_walk_space() * negative retcode - error @@ -197,7 +193,7 @@ static inline unsigned short ext_depth(struct inode *inode) static inline void ext4_ext_invalidate_cache(struct inode *inode) { - EXT4_I(inode)->i_cached_extent.ec_type = EXT4_EXT_CACHE_NO; + EXT4_I(inode)->i_cached_extent.ec_len = 0; } static inline void ext4_ext_mark_uninitialized(struct ext4_extent *ext) -- cgit v1.2.3