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ext2: Remove s_dirt handling

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Places which modify superblock feature / state fields mark the superblock
buffer dirty so it is written out by flusher thread. Thus there's no need to
set s_dirt there.

The only other fields changing in the superblock are the numbers of free
blocks, free inodes and s_wtime. There's no real need to write (or even
compute) these periodically. Free blocks / inodes counters are recomputed on
every mount from group counters anyway and value of s_wtime is only
informational and imprecise anyway. So it should be enough to write these
opportunistically on mount, remount, umount, and sync_fs times.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2012-03-31 14:22:10 +02:00
parent f2b2242081
commit b838ec2232
4 changed files with 0 additions and 8 deletions
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2
fs/ext2/ialloc.c
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@ -81,7 +81,6 @@ static void ext2_release_inode(struct super_block *sb, int group, int dir)
spin_unlock(sb_bgl_lock(EXT2_SB(sb), group));
if (dir)
percpu_counter_dec(&EXT2_SB(sb)->s_dirs_counter);
sb->s_dirt = 1;
mark_buffer_dirty(bh);
}
@ -543,7 +542,6 @@ got:
}
spin_unlock(sb_bgl_lock(sbi, group));
sb->s_dirt = 1;
mark_buffer_dirty(bh2);
if (test_opt(sb, GRPID)) {
inode->i_mode = mode;