Skip manipulating the refcount in case of slab pages according commit b9c0e49abfca ("mm: decline to manipulate the refcount on a slab page").
Fixes: b9c0e49abfca ("mm: decline to manipulate the refcount on a slab page") Signed-off-by: Marco Felsch m.felsch@pengutronix.de --- drivers/tee/tee_shm.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/tee/tee_shm.c b/drivers/tee/tee_shm.c index daf6e5cfd59a..3d6a3077b6f2 100644 --- a/drivers/tee/tee_shm.c +++ b/drivers/tee/tee_shm.c @@ -19,16 +19,24 @@ static void shm_put_kernel_pages(struct page **pages, size_t page_count) { size_t n;
- for (n = 0; n < page_count; n++) - put_page(pages[n]); + for (n = 0; n < page_count; n++) { + struct page *page = pages[n]; + + if (!PageSlab(page)) + put_page(pages[n]); + } }
static void shm_get_kernel_pages(struct page **pages, size_t page_count) { size_t n;
- for (n = 0; n < page_count; n++) - get_page(pages[n]); + for (n = 0; n < page_count; n++) { + struct page *page = pages[n]; + + if (!PageSlab(page)) + get_page(pages[n]); + } }
static void release_registered_pages(struct tee_shm *shm)