Messages in this thread | | | Date | Tue, 8 Feb 2022 01:28:29 -0700 | From | Yu Zhao <> | Subject | Re: [PATCH v7 04/12] mm: multigenerational LRU: groundwork |
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On Tue, Feb 08, 2022 at 01:18:54AM -0700, Yu Zhao wrote:
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> diff --git a/mm/memory.c b/mm/memory.c > index a7379196a47e..d27e5f1a2533 100644 > --- a/mm/memory.c > +++ b/mm/memory.c > @@ -4754,6 +4754,27 @@ static inline void mm_account_fault(struct pt_regs *regs, > perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address); > } > > +#ifdef CONFIG_LRU_GEN > +static void lru_gen_enter_fault(struct vm_area_struct *vma) > +{ > + /* the LRU algorithm doesn't apply to sequential or random reads */ > + current->in_lru_fault = !(vma->vm_flags & (VM_SEQ_READ | VM_RAND_READ)); > +} > + > +static void lru_gen_exit_fault(void) > +{ > + current->in_lru_fault = false; > +} > +#else > +static void lru_gen_enter_fault(struct vm_area_struct *vma) > +{ > +} > + > +static void lru_gen_exit_fault(void) > +{ > +} > +#endif /* CONFIG_LRU_GEN */
Moved task_enter_lru_fault() from mm.h to memory.c as requested here: https://lore.kernel.org/linux-mm/CAHk-=wib5-tUrf2=zYL9hjCqqFykZmTr_-vMAvSo48boCA+-Wg@mail.gmail.com/
Also renamed it to lru_gen_enter_fault().
<snipped>
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