On Thu, Jan 30, 2025 at 11:09 PM Christoph Hellwig wrote:
>
> On Thu, Jan 30, 2025 at 04:18:05PM -0800, Vishal Moola (Oracle) wrote:
> > + rcu_read_lock();
> > + xas_for_each(&xas, folio, last) {
>
> This only maps folios currently in the page cache, which makes it
> usefull for everything
On Thu, Jan 30, 2025 at 04:18:05PM -0800, Vishal Moola (Oracle) wrote:
> + rcu_read_lock();
> + xas_for_each(&xas, folio, last) {
This only maps folios currently in the page cache, which makes it
usefull for everything except ramfs-style purely in-memory file systems.
I.e. for the shmem us
