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merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes

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This commit is contained in:
Andrew Morton
2023-08-21 14:26:20 -07:00
parent e45a2e947d 6867c7a332
commit 5994eabf3b
41 changed files with 335 additions and 107 deletions
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21
include/linux/mm.h
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@@ -3496,15 +3496,24 @@ static inline int vm_fault_to_errno(vm_fault_t vm_fault, int foll_flags)
* Indicates whether GUP can follow a PROT_NONE mapped page, or whether
* a (NUMA hinting) fault is required.
*/
static inline bool gup_can_follow_protnone(unsigned int flags)
static inline bool gup_can_follow_protnone(struct vm_area_struct *vma,
unsigned int flags)
{
/*
* FOLL_FORCE has to be able to make progress even if the VMA is
* inaccessible. Further, FOLL_FORCE access usually does not represent
* application behaviour and we should avoid triggering NUMA hinting
* faults.
* If callers don't want to honor NUMA hinting faults, no need to
* determine if we would actually have to trigger a NUMA hinting fault.
*/
return flags & FOLL_FORCE;
if (!(flags & FOLL_HONOR_NUMA_FAULT))
return true;
/*
* NUMA hinting faults don't apply in inaccessible (PROT_NONE) VMAs.
*
* Requiring a fault here even for inaccessible VMAs would mean that
* FOLL_FORCE cannot make any progress, because handle_mm_fault()
* refuses to process NUMA hinting faults in inaccessible VMAs.
*/
return !vma_is_accessible(vma);
}
typedef int (*pte_fn_t)(pte_t *pte, unsigned long addr, void *data);