diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 7 | ||||
| -rw-r--r-- | mm/hugetlb.c | 6 | ||||
| -rw-r--r-- | mm/page_alloc.c | 2 | ||||
| -rw-r--r-- | mm/percpu.c | 5 | ||||
| -rw-r--r-- | mm/vmpressure.c | 10 |
5 files changed, 23 insertions, 7 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 731d0876ccaf..d8e690da5494 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -807,9 +807,12 @@ void page_endio(struct page *page, int rw, int err) unlock_page(page); } else { /* rw == WRITE */ if (err) { + struct address_space *mapping; + SetPageError(page); - if (page->mapping) - mapping_set_error(page->mapping, err); + mapping = page_mapping(page); + if (mapping) + mapping_set_error(mapping, err); } end_page_writeback(page); } diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 2f47f0332a2c..0be3148b2f7d 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3890,6 +3890,7 @@ follow_huge_pmd(struct mm_struct *mm, unsigned long address, { struct page *page = NULL; spinlock_t *ptl; + pte_t pte; retry: ptl = pmd_lockptr(mm, pmd); spin_lock(ptl); @@ -3899,12 +3900,13 @@ retry: */ if (!pmd_huge(*pmd)) goto out; - if (pmd_present(*pmd)) { + pte = huge_ptep_get((pte_t *)pmd); + if (pte_present(pte)) { page = pmd_page(*pmd) + ((address & ~PMD_MASK) >> PAGE_SHIFT); if (flags & FOLL_GET) get_page(page); } else { - if (is_hugetlb_entry_migration(huge_ptep_get((pte_t *)pmd))) { + if (is_hugetlb_entry_migration(pte)) { spin_unlock(ptl); __migration_entry_wait(mm, (pte_t *)pmd, ptl); goto retry; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 3a57d216fd60..4cc07d35e9a7 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2045,7 +2045,7 @@ static bool zone_local(struct zone *local_zone, struct zone *zone) static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone) { - return node_distance(zone_to_nid(local_zone), zone_to_nid(zone)) < + return node_distance(zone_to_nid(local_zone), zone_to_nid(zone)) <= RECLAIM_DISTANCE; } diff --git a/mm/percpu.c b/mm/percpu.c index b97617587620..a40d5e04a3d1 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1012,8 +1012,11 @@ area_found: mutex_unlock(&pcpu_alloc_mutex); } - if (chunk != pcpu_reserved_chunk) + if (chunk != pcpu_reserved_chunk) { + spin_lock_irqsave(&pcpu_lock, flags); pcpu_nr_empty_pop_pages -= occ_pages; + spin_unlock_irqrestore(&pcpu_lock, flags); + } if (pcpu_nr_empty_pop_pages < PCPU_EMPTY_POP_PAGES_LOW) pcpu_schedule_balance_work(); diff --git a/mm/vmpressure.c b/mm/vmpressure.c index c5afd573d7da..3fb15c25af87 100644 --- a/mm/vmpressure.c +++ b/mm/vmpressure.c @@ -112,9 +112,16 @@ static enum vmpressure_levels vmpressure_calc_level(unsigned long scanned, unsigned long reclaimed) { unsigned long scale = scanned + reclaimed; - unsigned long pressure; + unsigned long pressure = 0; /* + * reclaimed can be greater than scanned in cases + * like THP, where the scanned is 1 and reclaimed + * could be 512 + */ + if (reclaimed >= scanned) + goto out; + /* * We calculate the ratio (in percents) of how many pages were * scanned vs. reclaimed in a given time frame (window). Note that * time is in VM reclaimer's "ticks", i.e. number of pages @@ -124,6 +131,7 @@ static enum vmpressure_levels vmpressure_calc_level(unsigned long scanned, pressure = scale - (reclaimed * scale / scanned); pressure = pressure * 100 / scale; +out: pr_debug("%s: %3lu (s: %lu r: %lu)\n", __func__, pressure, scanned, reclaimed); |