if (bio->bi_size)
return 1;
- if (!uptodate)
+ if (!uptodate) {
SetPageError(page);
+ /*
+ * We failed to write the page out to swap-space.
+ * Re-dirty the page in order to avoid it being reclaimed.
+ * Also print a dire warning that things will go BAD (tm)
+ * very quickly.
+ *
+ * Also clear PG_reclaim to avoid rotate_reclaimable_page()
+ */
+ set_page_dirty(page);
+ printk(KERN_ALERT "Write-error on swap-device (%u:%u:%Lu)\n",
+ imajor(bio->bi_bdev->bd_inode),
+ iminor(bio->bi_bdev->bd_inode),
+ (unsigned long long)bio->bi_sector);
+ ClearPageReclaim(page);
+ }
end_page_writeback(page);
bio_put(bio);
return 0;
if (!uptodate) {
SetPageError(page);
ClearPageUptodate(page);
+ printk(KERN_ALERT "Read-error on swap-device (%u:%u:%Lu)\n",
+ imajor(bio->bi_bdev->bd_inode),
+ iminor(bio->bi_bdev->bd_inode),
+ (unsigned long long)bio->bi_sector);
} else {
SetPageUptodate(page);
}
unlock_page(page);
goto out;
}
- bio = get_swap_bio(GFP_NOIO, page->private, page, end_swap_bio_write);
+ bio = get_swap_bio(GFP_NOIO, page_private(page), page,
+ end_swap_bio_write);
if (bio == NULL) {
set_page_dirty(page);
unlock_page(page);
}
if (wbc->sync_mode == WB_SYNC_ALL)
rw |= (1 << BIO_RW_SYNC);
- inc_page_state(pswpout);
+ count_vm_event(PSWPOUT);
set_page_writeback(page);
unlock_page(page);
submit_bio(rw, bio);
BUG_ON(!PageLocked(page));
ClearPageUptodate(page);
- bio = get_swap_bio(GFP_KERNEL, page->private, page, end_swap_bio_read);
+ bio = get_swap_bio(GFP_KERNEL, page_private(page), page,
+ end_swap_bio_read);
if (bio == NULL) {
unlock_page(page);
ret = -ENOMEM;
goto out;
}
- inc_page_state(pswpin);
+ count_vm_event(PSWPIN);
submit_bio(READ, bio);
out:
return ret;