return ret;
}
+static sector_t swap_page_sector(struct page *page)
+{
+ return (sector_t)__page_file_index(page) << (PAGE_CACHE_SHIFT - 9);
+}
+
int __swap_writepage(struct page *page, struct writeback_control *wbc,
void (*end_write_func)(struct bio *, int))
{
struct bio *bio;
- int ret = 0, rw = WRITE;
+ int ret, rw = WRITE;
struct swap_info_struct *sis = page_swap_info(page);
if (sis->flags & SWP_FILE) {
.count = PAGE_SIZE,
.iov_offset = 0,
.nr_segs = 1,
- .bvec = &bv
};
+ from.bvec = &bv; /* older gcc versions are broken */
init_sync_kiocb(&kiocb, swap_file);
kiocb.ki_pos = page_file_offset(page);
return ret;
}
+ ret = bdev_write_page(sis->bdev, swap_page_sector(page), page, wbc);
+ if (!ret) {
+ count_vm_event(PSWPOUT);
+ return 0;
+ }
+
+ ret = 0;
bio = get_swap_bio(GFP_NOIO, page, end_write_func);
if (bio == NULL) {
set_page_dirty(page);
return ret;
}
+ ret = bdev_read_page(sis->bdev, swap_page_sector(page), page);
+ if (!ret) {
+ count_vm_event(PSWPIN);
+ return 0;
+ }
+
+ ret = 0;
bio = get_swap_bio(GFP_KERNEL, page, end_swap_bio_read);
if (bio == NULL) {
unlock_page(page);