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 use case in the second patch it fails to swap in
swapped out tmpfs folios.
> +EXPORT_SYMBOL(vmap_file);
EXPORT_SYMBOL_GPL for any advances vmalloc-layer functionality, please.
