From: zhong jiang <zhongjiang@xxxxxxxxxx> Current, when we prepare a huge page to collapse, due to some reasons, it can fail to collapse. At the moment, we should release the preallocate huge page. Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx> --- mm/khugepaged.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 7cb9c88..586b1f1 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1082,6 +1082,8 @@ static void collapse_huge_page(struct mm_struct *mm, up_write(&mm->mmap_sem); out_nolock: trace_mm_collapse_huge_page(mm, isolated, result); + if (page != NULL && result != SCAN_SUCCEED) + put_page(new_page); return; out: mem_cgroup_cancel_charge(new_page, memcg, true); @@ -1555,6 +1557,8 @@ static void collapse_shmem(struct mm_struct *mm, } out: VM_BUG_ON(!list_empty(&pagelist)); + if (page != NULL && result != SCAN_SUCCEED) + put_page(new_page); /* TODO: tracepoints */ } -- 1.8.3.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
