On Wed, Jul 20, 2022 at 02:21:19AM +0000, cgel.zte@xxxxxxxxx wrote: > From: Yang Yang <yang.yang29@xxxxxxxxxx> > > Pagecache of some kind of fs has PG_dirty bit set once it was > allocated, so it can't be dropped. These fs include ramfs and > tmpfs. This can make drop_pagecache_sb() more efficient. Why do we want to make drop_pagecache_sb() more efficient?
