On 6/11/24 23:13, Christoph Hellwig wrote:
On Tue, Jun 11, 2024 at 05:47:12PM +0700, Shaun Tancheff wrote:
const struct address_space_operations *a_ops = mapping->a_ops;
+ size_t chunk = mapping_max_folio_size(mapping);
Better to default chunk to PAGE_SIZE for backward compat
+ size_t chunk = PAGE_SIZE;
long status = 0;
ssize_t written = 0;
Have fs opt in to large folio support:
+ if (mapping_large_folio_support(mapping))
+ chunk = PAGE_SIZE << MAX_PAGECACHE_ORDER;
I don't think you've actually read the code, have you?
I checked from 6.6 to linux-next with this patch and my ext4 VM does not boot without the opt-in.
Almost certainly there is something I am missing, probably not looking at the correct tree.
Thanks!
--Shaun
