lkml.org 
[lkml]   [2024]   [Apr]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH v7 1/3] mm/madvise: introduce clear_young_dirty_ptes() batch helper
Date
Hey David, Ryan,

How about this change?

static inline void clear_young_dirty_ptes(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
unsigned int nr, cydp_t flags)
{
if (flags == CYDP_CLEAR_YOUNG) {
for (;;) {
ptep_test_and_clear_young(vma, addr, ptep);
if (--nr == 0)
break;
ptep++;
addr += PAGE_SIZE;
}
return;
}

pte_t pte;

for (;;) {
pte = ptep_get_and_clear(vma->vm_mm, addr, ptep);

if (flags & CYDP_CLEAR_YOUNG)
pte = pte_mkold(pte);
if (flags & CYDP_CLEAR_DIRTY)
pte = pte_mkclean(pte);

if (--nr == 0)
break;
ptep++;
addr += PAGE_SIZE;
}
}

Thanks,
Lance

\
 
 \ /
  Last update: 2024-04-17 07:04    [W:0.074 / U:0.784 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site