mm: compaction: fix COMPACTPAGEFAILED counting

[mirror_ubuntu-jammy-kernel.git] / mm / mempolicy.c

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index f969da5dd8a2136b92aab7e7c1a6ecc9083d6cb9..21243b2b7b070827809e443331be43a7172706d8 100644 (file)
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -931,8 +931,11 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
        check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask,
                        flags | MPOL_MF_DISCONTIG_OK, &pagelist);
 
-       if (!list_empty(&pagelist))
+       if (!list_empty(&pagelist)) {
                err = migrate_pages(&pagelist, new_node_page, dest, 0);
+               if (err)
+                       putback_lru_pages(&pagelist);
+       }
 
        return err;
 }
@@ -1147,9 +1150,12 @@ static long do_mbind(unsigned long start, unsigned long len,
 
                err = mbind_range(mm, start, end, new);
 
-               if (!list_empty(&pagelist))
+               if (!list_empty(&pagelist)) {
                        nr_failed = migrate_pages(&pagelist, new_vma_page,
                                                (unsigned long)vma, 0);
+                       if (nr_failed)
+                               putback_lru_pages(&pagelist);
+               }
 
                if (!err && nr_failed && (flags & MPOL_MF_STRICT))
                        err = -EIO;