On 2025/1/6 20:36, Alexander Gordeev wrote:
On Mon, Jan 06, 2025 at 06:55:58PM +0800, Qi Zheng wrote:
+static inline void pagetable_dtor(struct ptdesc *ptdesc)
+{
+ struct folio *folio = ptdesc_folio(ptdesc);
+
+ ptlock_free(ptdesc);
+ __folio_clear_pgtable(folio);
+ lruvec_stat_sub_folio(folio, NR_PAGETABLE);
+}
+
If I am not mistaken, it is just pagetable_pte_dtor() rename.
What is the point in moving the code around?
No, this is to unify pagetable_p*_dtor() into pagetable_dtor(), so
that we can move pagetable_dtor() to __tlb_remove_table(), and then
ptlock and PTE page can be freed together through RCU, which is
also the main purpose of this patch series.
I am only talking about this patch. pagetable_dtor() code above is
the same pagetable_pte_dtor() below - it is only the function name
that changed. So why to move the function body? Anyway, that is
Ah, I just don't want to put pagetable_dtor() in between
pagetable_pte_ctor() and ___pte_offset_map(), so I moved it above
pagetable_pte_ctor(). No other special reason. ;)
Thanks!
just a nit.
Thanks!
-static inline void pagetable_pte_dtor(struct ptdesc *ptdesc)
-{
- struct folio *folio = ptdesc_folio(ptdesc);
-
- ptlock_free(ptdesc);
- __folio_clear_pgtable(folio);
- lruvec_stat_sub_folio(folio, NR_PAGETABLE);
-}
Thank you!
