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| author | Theodore Ts'o | 2011-01-10 18:18:25 +0100 |
|---|---|---|
| committer | Theodore Ts'o | 2011-01-10 18:18:25 +0100 |
| commit | 353eb83c1422c6326eaab30ce044a179c6018169 (patch) | |
| tree | fd43e39b344de5ee43d82c90f0affda68a65f2df /fs/ext4/inode.c | |
| parent | ext4: reorder ext4_inode_info structure elements to remove unneeded padding (diff) | |
| download | kernel-qcow2-linux-353eb83c1422c6326eaab30ce044a179c6018169.tar.gz kernel-qcow2-linux-353eb83c1422c6326eaab30ce044a179c6018169.tar.xz kernel-qcow2-linux-353eb83c1422c6326eaab30ce044a179c6018169.zip | |
ext4: drop i_state_flags on architectures with 64-bit longs
We can store the dynamic inode state flags in the high bits of
EXT4_I(inode)->i_flags, and eliminate i_state_flags. This saves 8
bytes from the size of ext4_inode_info structure, which when
multiplied by the number of the number of in the inode cache, can save
a lot of memory.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 3ae83137cf34..0801ee6a173e 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4868,7 +4868,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) } inode->i_nlink = le16_to_cpu(raw_inode->i_links_count); - ei->i_state_flags = 0; + ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */ ei->i_dir_start_lookup = 0; ei->i_dtime = le32_to_cpu(raw_inode->i_dtime); /* We now have enough fields to check if the inode was active or not. @@ -5127,7 +5127,7 @@ static int ext4_do_update_inode(handle_t *handle, if (ext4_inode_blocks_set(handle, raw_inode, ei)) goto out_brelse; raw_inode->i_dtime = cpu_to_le32(ei->i_dtime); - raw_inode->i_flags = cpu_to_le32(ei->i_flags); + raw_inode->i_flags = cpu_to_le32(ei->i_flags & 0xFFFFFFFF); if (EXT4_SB(inode->i_sb)->s_es->s_creator_os != cpu_to_le32(EXT4_OS_HURD)) raw_inode->i_file_acl_high = |