On 2024/4/11 20:53, Matthew Wilcox wrote:
On Thu, Apr 11, 2024 at 09:09:49PM +0800, Kefeng Wang wrote:
In order to support batch mm counter updating in filemap_map_pages(),
make set_pte_range() return the type of MM_COUNTERS and move mm counter
updating out of set_pte_range().
I don't like this. You're making set_pte_range() harder to use.
It's also rather overengineered; if you're calling set_pte_range()
from filemap.c, you already know the folios are MM_FILEPAGES.
or MM_SHMEMS, and another caller finish_fault(), which already check
vmf->flags and vma->vm_flags, we could use it to distinguish anon or
file, I will try this way, thanks.
