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ext4: reorder ext4_inode_info structure elements to remove unneeded padding
By reordering the elements in the ext4_inode_info structure, we can reduce the padding needed on an x86_64 system by 16 bytes. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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1 changed files with 4 additions and 3 deletions
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@ -763,10 +763,10 @@ struct ext4_inode_info {
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* near to their parent directory's inode.
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*/
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ext4_group_t i_block_group;
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ext4_lblk_t i_dir_start_lookup;
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unsigned long i_state_flags; /* Dynamic state flags */
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unsigned long i_flags;
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ext4_lblk_t i_dir_start_lookup;
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#ifdef CONFIG_EXT4_FS_XATTR
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/*
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* Extended attributes can be read independently of the main file
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@ -835,7 +835,6 @@ struct ext4_inode_info {
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/* on-disk additional length */
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__u16 i_extra_isize;
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spinlock_t i_block_reservation_lock;
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#ifdef CONFIG_QUOTA
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/* quota space reservation, managed internally by quota code */
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qsize_t i_reserved_quota;
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@ -844,9 +843,11 @@ struct ext4_inode_info {
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/* completed IOs that might need unwritten extents handling */
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struct list_head i_completed_io_list;
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spinlock_t i_completed_io_lock;
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atomic_t i_ioend_count; /* Number of outstanding io_end structs */
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/* current io_end structure for async DIO write*/
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ext4_io_end_t *cur_aio_dio;
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atomic_t i_ioend_count; /* Number of outstanding io_end structs */
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spinlock_t i_block_reservation_lock;
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/*
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* Transactions that contain inode's metadata needed to complete
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