On Tue, Feb 11, 2020 at 08:18:29PM -0800, Matthew Wilcox wrote: > From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx> > > The page cache needs to know whether the filesystem supports pages > > PAGE_SIZE. Does it make sense to set this flag on the file_system_type, which is rather broad scope, or a specific superblock or even inode? For some file systems we might require on-disk flags that aren't set for all instances.