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mm/damon: replace pmd_huge() with pmd_trans_huge() for THP 

pmd_huge() is usually used to indicate a pmd level hugetlb.  However a pmd
mapped huge page can only be THP in damon_mkold_pmd_entry() or
damon_young_pmd_entry(), so replace pmd_huge() with pmd_trans_huge() in
this case to make the code more readable according to the discussion [1].

[1] https://lore.kernel.org/all/098c1480-416d-bca9-cedb-ca495df69b64@linux.alibaba.com/

Link: https://lkml.kernel.org/r/a9e010ca5d299e18d740c7c52290ecb6a014dde6.1660805030.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Baolin Wang 2022-08-18 15:37:44 +08:00 committed by Andrew Morton
parent c8b9aff419
commit 72c33ef4c0
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
mm/damon/vaddr.c
View File

@ -302,14 +302,14 @@ static int damon_mkold_pmd_entry(pmd_t *pmd, unsigned long addr,
pte_t *pte;
spinlock_t *ptl;
if (pmd_huge(*pmd)) {
if (pmd_trans_huge(*pmd)) {
ptl = pmd_lock(walk->mm, pmd);
if (!pmd_present(*pmd)) {
spin_unlock(ptl);
return 0;
}
if (pmd_huge(*pmd)) {
if (pmd_trans_huge(*pmd)) {
damon_pmdp_mkold(pmd, walk->mm, addr);
spin_unlock(ptl);
return 0;
@ -434,14 +434,14 @@ static int damon_young_pmd_entry(pmd_t *pmd, unsigned long addr,
struct damon_young_walk_private *priv = walk->private;
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
if (pmd_huge(*pmd)) {
if (pmd_trans_huge(*pmd)) {
ptl = pmd_lock(walk->mm, pmd);
if (!pmd_present(*pmd)) {
spin_unlock(ptl);
return 0;
}
if (!pmd_huge(*pmd)) {
if (!pmd_trans_huge(*pmd)) {
spin_unlock(ptl);
goto regular_page;
}