diff options
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index d5b2b75..e7d5db9 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1227,8 +1227,11 @@ int do_huge_pmd_numa_page(struct fault_env *fe, pmd_t pmd) */ if (unlikely(pmd_trans_migrating(*fe->pmd))) { page = pmd_page(*fe->pmd); + if (!get_page_unless_zero(page)) + goto out_unlock; spin_unlock(fe->ptl); wait_on_page_locked(page); + put_page(page); goto out; } @@ -1260,8 +1263,11 @@ int do_huge_pmd_numa_page(struct fault_env *fe, pmd_t pmd) /* Migration could have started since the pmd_trans_migrating check */ if (!page_locked) { + if (!get_page_unless_zero(page)) + goto out_unlock; spin_unlock(fe->ptl); wait_on_page_locked(page); + put_page(page); page_nid = -1; goto out; } |