diff options
| -rw-r--r-- | mm/page_io.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/mm/page_io.c b/mm/page_io.c index 8802994..d2f0a57 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -52,8 +52,23 @@ static int end_swap_bio_write(struct bio *bio, unsigned int bytes_done, int err) 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; @@ -70,6 +85,10 @@ static int end_swap_bio_read(struct bio *bio, unsigned int bytes_done, int err) 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); } |
