On Tue, Apr 08, 2025 at 08:22:47AM -0700, Dave Hansen wrote:
> Are there any tests for folio_test_pgtable() at free_page() time? If we
> had that, it would make it less likely that another free_page() user
> could sneak in without calling the destructor.
It's hidden, but yes:
static inline bool p
On 08/04/2025 19:40, Matthew Wilcox wrote:
> On Tue, Apr 08, 2025 at 09:54:42AM -0700, Dave Hansen wrote:
>> On 4/8/25 09:37, Matthew Wilcox wrote:
>>> On Tue, Apr 08, 2025 at 08:22:47AM -0700, Dave Hansen wrote:
Are there any tests for folio_test_pgtable() at free_page() time? If we
had
On 4/8/25 10:40, Matthew Wilcox wrote:
> I think at this point in Kevin's series, we don't call the ctor for
> these pages, so we never set PageTable() on them. I could be wrong;
> as Kevin says, this is all very twisty and confusing with exceptions and
> exceptions to exceptions. This series sho
On Tue, Apr 08, 2025 at 09:54:42AM -0700, Dave Hansen wrote:
> On 4/8/25 09:37, Matthew Wilcox wrote:
> > On Tue, Apr 08, 2025 at 08:22:47AM -0700, Dave Hansen wrote:
> >> Are there any tests for folio_test_pgtable() at free_page() time? If we
> >> had that, it would make it less likely that anothe
On 4/8/25 09:37, Matthew Wilcox wrote:
> On Tue, Apr 08, 2025 at 08:22:47AM -0700, Dave Hansen wrote:
>> Are there any tests for folio_test_pgtable() at free_page() time? If we
>> had that, it would make it less likely that another free_page() user
>> could sneak in without calling the destructor.
On 4/8/25 02:52, Kevin Brodsky wrote:
> Page table pages are normally freed using the appropriate helper for
> the given page table level. On x86, pud_free_pmd_page() and
> pmd_free_pte_page() are an exception to the rule: they call
> free_page() directly.
>
> Constructor/destructor calls are abou
Page table pages are normally freed using the appropriate helper for
the given page table level. On x86, pud_free_pmd_page() and
pmd_free_pte_page() are an exception to the rule: they call
free_page() directly.
Constructor/destructor calls are about to be introduced for kernel
PTEs. To avoid missi
