xiaomi-sm8450/android_kernel_xiaomi_sm8450
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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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3
fs/ext2/super.c
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@@ -1158,7 +1158,6 @@ static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es,
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
if (wait)
sync_dirty_buffer(EXT2_SB(sb)->s_sbh);
sb->s_dirt = 0;
}
/*
@@ -1191,8 +1190,6 @@ void ext2_write_super(struct super_block *sb)
{
if (!(sb->s_flags & MS_RDONLY))
ext2_sync_fs(sb, 1);
else
sb->s_dirt = 0;
}
static int ext2_remount (struct super_block * sb, int * flags, char * data)