diff options
| -rw-r--r-- | mm/madvise.c | 9 | ||||
| -rw-r--r-- | mm/memory-failure.c | 6 |
2 files changed, 7 insertions, 8 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index fe5c2327e421..6a660858784b 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -907,14 +907,7 @@ static int madvise_inject_error(int behavior, } else { pr_info("Injecting memory failure for pfn %#lx at process virtual address %#lx\n", pfn, start); - /* - * Drop the page reference taken by get_user_pages_fast(). In - * the absence of MF_COUNT_INCREASED the memory_failure() - * routine is responsible for pinning the page to prevent it - * from being released back to the page allocator. - */ - put_page(page); - ret = memory_failure(pfn, 0); + ret = memory_failure(pfn, MF_COUNT_INCREASED); } if (ret) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index cd10a520f2a8..d3f283c72214 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1302,6 +1302,12 @@ static int memory_failure_dev_pagemap(unsigned long pfn, int flags, loff_t start; dax_entry_t cookie; + if (flags & MF_COUNT_INCREASED) + /* + * Drop the extra refcount in case we come from madvise(). + */ + put_page(page); + /* * Prevent the inode from being freed while we are interrogating * the address_space, typically this would be handled by |