diff options
Diffstat (limited to 'mm/page_io.c')
| -rw-r--r-- | mm/page_io.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/mm/page_io.c b/mm/page_io.c index 58b50d2901f..955db8b0d49 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -264,10 +264,18 @@ 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, + }; + from.bvec = &bv; /* older gcc versions are broken */ init_sync_kiocb(&kiocb, swap_file); kiocb.ki_pos = page_file_offset(page); @@ -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; |