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-rw-r--r--mm/page_io.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/mm/page_io.c b/mm/page_io.c
index 88029948d00a..d2f0a5783370 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)
52 if (bio->bi_size) 52 if (bio->bi_size)
53 return 1; 53 return 1;
54 54
55 if (!uptodate) 55 if (!uptodate) {
56 SetPageError(page); 56 SetPageError(page);
57 /*
58 * We failed to write the page out to swap-space.
59 * Re-dirty the page in order to avoid it being reclaimed.
60 * Also print a dire warning that things will go BAD (tm)
61 * very quickly.
62 *
63 * Also clear PG_reclaim to avoid rotate_reclaimable_page()
64 */
65 set_page_dirty(page);
66 printk(KERN_ALERT "Write-error on swap-device (%u:%u:%Lu)\n",
67 imajor(bio->bi_bdev->bd_inode),
68 iminor(bio->bi_bdev->bd_inode),
69 (unsigned long long)bio->bi_sector);
70 ClearPageReclaim(page);
71 }
57 end_page_writeback(page); 72 end_page_writeback(page);
58 bio_put(bio); 73 bio_put(bio);
59 return 0; 74 return 0;
@@ -70,6 +85,10 @@ static int end_swap_bio_read(struct bio *bio, unsigned int bytes_done, int err)
70 if (!uptodate) { 85 if (!uptodate) {
71 SetPageError(page); 86 SetPageError(page);
72 ClearPageUptodate(page); 87 ClearPageUptodate(page);
88 printk(KERN_ALERT "Read-error on swap-device (%u:%u:%Lu)\n",
89 imajor(bio->bi_bdev->bd_inode),
90 iminor(bio->bi_bdev->bd_inode),
91 (unsigned long long)bio->bi_sector);
73 } else { 92 } else {
74 SetPageUptodate(page); 93 SetPageUptodate(page);
75 } 94 }