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-rw-r--r--mm/page_io.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/mm/page_io.c b/mm/page_io.c
index 58b50d2901fe..243a9b76e5ce 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -264,9 +264,17 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
struct kiocb kiocb;
struct file *swap_file = sis->swap_file;
struct address_space *mapping = swap_file->f_mapping;
- struct iovec iov = {
- .iov_base = kmap(page),
- .iov_len = PAGE_SIZE,
+ struct bio_vec bv = {
+ .bv_page = page,
+ .bv_len = PAGE_SIZE,
+ .bv_offset = 0
+ };
+ struct iov_iter from = {
+ .type = ITER_BVEC | WRITE,
+ .count = PAGE_SIZE,
+ .iov_offset = 0,
+ .nr_segs = 1,
+ .bvec = &bv
};
init_sync_kiocb(&kiocb, swap_file);
@@ -275,10 +283,9 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
set_page_writeback(page);
unlock_page(page);
- ret = mapping->a_ops->direct_IO(KERNEL_WRITE,
- &kiocb, &iov,
- kiocb.ki_pos, 1);
- kunmap(page);
+ ret = mapping->a_ops->direct_IO(ITER_BVEC | WRITE,
+ &kiocb, &from,
+ kiocb.ki_pos);
if (ret == PAGE_SIZE) {
count_vm_event(PSWPOUT);
ret = 0;