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Merge branch 'akpm' (patches from Andrew)

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Merge fixes from Andrew Morton:
 "6 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: proc: smaps_rollup: fix pss_locked calculation
  Rename include/{uapi => }/asm-generic/shmparam.h really
  Revert "mm: use early_pfn_to_nid in page_ext_init"
  mm/gup: fix gup_pmd_range() for dax
  Revert "mm: slowly shrink slabs with a relatively small number of objects"
  Revert "mm: don't reclaim inodes with many attached pages"
This commit is contained in:
Linus Torvalds
2019-02-12 17:15:33 -08:00
parent 991b9eb424 27dd768ed8
commit 1f947a7a01
7 changed files with 21 additions and 28 deletions
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7
fs/inode.c
View File

@@ -730,11 +730,8 @@ static enum lru_status inode_lru_isolate(struct list_head *item,
return LRU_REMOVED;
}
/*
* Recently referenced inodes and inodes with many attached pages
* get one more pass.
*/
if (inode->i_state & I_REFERENCED || inode->i_data.nrpages > 1) {
/* recently referenced inodes get one more pass */
if (inode->i_state & I_REFERENCED) {
inode->i_state &= ~I_REFERENCED;
spin_unlock(&inode->i_lock);
return LRU_ROTATE;

22
fs/proc/task_mmu.c
View File

@@ -423,7 +423,7 @@ struct mem_size_stats {
};
static void smaps_account(struct mem_size_stats *mss, struct page *page,
bool compound, bool young, bool dirty)
bool compound, bool young, bool dirty, bool locked)
{
int i, nr = compound ? 1 << compound_order(page) : 1;
unsigned long size = nr * PAGE_SIZE;
@@ -450,24 +450,31 @@ static void smaps_account(struct mem_size_stats *mss, struct page *page,
else
mss->private_clean += size;
mss->pss += (u64)size << PSS_SHIFT;
if (locked)
mss->pss_locked += (u64)size << PSS_SHIFT;
return;
}
for (i = 0; i < nr; i++, page++) {
int mapcount = page_mapcount(page);
unsigned long pss = (PAGE_SIZE << PSS_SHIFT);
if (mapcount >= 2) {
if (dirty || PageDirty(page))
mss->shared_dirty += PAGE_SIZE;
else
mss->shared_clean += PAGE_SIZE;
mss->pss += (PAGE_SIZE << PSS_SHIFT) / mapcount;
mss->pss += pss / mapcount;
if (locked)
mss->pss_locked += pss / mapcount;
} else {
if (dirty || PageDirty(page))
mss->private_dirty += PAGE_SIZE;
else
mss->private_clean += PAGE_SIZE;
mss->pss += PAGE_SIZE << PSS_SHIFT;
mss->pss += pss;
if (locked)
mss->pss_locked += pss;
}
}
}
@@ -490,6 +497,7 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr,
{
struct mem_size_stats *mss = walk->private;
struct vm_area_struct *vma = walk->vma;
bool locked = !!(vma->vm_flags & VM_LOCKED);
struct page *page = NULL;
if (pte_present(*pte)) {
@@ -532,7 +540,7 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr,
if (!page)
return;
smaps_account(mss, page, false, pte_young(*pte), pte_dirty(*pte));
smaps_account(mss, page, false, pte_young(*pte), pte_dirty(*pte), locked);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -541,6 +549,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr,
{
struct mem_size_stats *mss = walk->private;
struct vm_area_struct *vma = walk->vma;
bool locked = !!(vma->vm_flags & VM_LOCKED);
struct page *page;
/* FOLL_DUMP will return -EFAULT on huge zero page */
@@ -555,7 +564,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr,
/* pass */;
else
VM_BUG_ON_PAGE(1, page);
smaps_account(mss, page, true, pmd_young(*pmd), pmd_dirty(*pmd));
smaps_account(mss, page, true, pmd_young(*pmd), pmd_dirty(*pmd), locked);
}
#else
static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr,
@@ -737,11 +746,8 @@ static void smap_gather_stats(struct vm_area_struct *vma,
}
}
#endif
/* mmap_sem is held in m_start */
walk_page_vma(vma, &smaps_walk);
if (vma->vm_flags & VM_LOCKED)
mss->pss_locked += mss->pss;
}
#define SEQ_PUT_DEC(str, val) \