HWPOISON: Convert pr_debugs to pr_info

Convert a lot of pr_debugs in memory-failure.c that are generally useful
to pr_info. It's reasonable to print at least one message why
offlining succeeded or failed by default.

Signed-off-by: Andi Kleen <ak@linux.intel.com>

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index eebb9d8..0a2ed9a 100644 (file)
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -314,7 +314,7 @@ static void add_to_kill(struct task_struct *tsk, struct page *p,
         * a SIGKILL because the error is not contained anymore.
         */
        if (tk->addr == -EFAULT) {
-               pr_debug("MCE: Unable to find user space address %lx in %s\n",
+               pr_info("MCE: Unable to find user space address %lx in %s\n",
                        page_to_pfn(p), tsk->comm);
                tk->addr_valid = 0;
        }
@@ -582,7 +582,7 @@ static int me_pagecache_clean(struct page *p, unsigned long pfn)
                                        pfn, err);
                } else if (page_has_private(p) &&
                                !try_to_release_page(p, GFP_NOIO)) {
-                       pr_debug("MCE %#lx: failed to release buffers\n", pfn);
+                       pr_info("MCE %#lx: failed to release buffers\n", pfn);
                } else {
                        ret = RECOVERED;
                }
@@ -1152,7 +1152,7 @@ int unpoison_memory(unsigned long pfn)
        page = compound_head(p);
 
        if (!PageHWPoison(p)) {
-               pr_debug("MCE: Page was already unpoisoned %#lx\n", pfn);
+               pr_info("MCE: Page was already unpoisoned %#lx\n", pfn);
                return 0;
        }
 
@@ -1161,7 +1161,7 @@ int unpoison_memory(unsigned long pfn)
        if (!get_page_unless_zero(page)) {
                if (TestClearPageHWPoison(p))
                        atomic_long_sub(nr_pages, &mce_bad_pages);
-               pr_debug("MCE: Software-unpoisoned free page %#lx\n", pfn);
+               pr_info("MCE: Software-unpoisoned free page %#lx\n", pfn);
                return 0;
        }
 
@@ -1173,7 +1173,7 @@ int unpoison_memory(unsigned long pfn)
         * the free buddy page pool.
         */
        if (TestClearPageHWPoison(page)) {
-               pr_debug("MCE: Software-unpoisoned page %#lx\n", pfn);
+               pr_info("MCE: Software-unpoisoned page %#lx\n", pfn);
                atomic_long_sub(nr_pages, &mce_bad_pages);
                freeit = 1;
        }
@@ -1222,12 +1222,12 @@ static int get_any_page(struct page *p, unsigned long pfn, int flags)
        set_migratetype_isolate(p);
        if (!get_page_unless_zero(compound_head(p))) {
                if (is_free_buddy_page(p)) {
-                       pr_debug("get_any_page: %#lx free buddy page\n", pfn);
+                       pr_info("get_any_page: %#lx free buddy page\n", pfn);
                        /* Set hwpoison bit while page is still isolated */
                        SetPageHWPoison(p);
                        ret = 0;
                } else {
-                       pr_debug("get_any_page: %#lx: unknown zero refcount page type %lx\n",
+                       pr_info("get_any_page: %#lx: unknown zero refcount page type %lx\n",
                                pfn, p->flags);
                        ret = -EIO;
                }
@@ -1293,7 +1293,7 @@ int soft_offline_page(struct page *page, int flags)
                        goto done;
        }
        if (!PageLRU(page)) {
-               pr_debug("soft_offline: %#lx: unknown non LRU page type %lx\n",
+               pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n",
                                pfn, page->flags);
                return -EIO;
        }
@@ -1307,7 +1307,7 @@ int soft_offline_page(struct page *page, int flags)
        if (PageHWPoison(page)) {
                unlock_page(page);
                put_page(page);
-               pr_debug("soft offline: %#lx page already poisoned\n", pfn);
+               pr_info("soft offline: %#lx page already poisoned\n", pfn);
                return -EBUSY;
        }
 
@@ -1328,7 +1328,7 @@ int soft_offline_page(struct page *page, int flags)
        put_page(page);
        if (ret == 1) {
                ret = 0;
-               pr_debug("soft_offline: %#lx: invalidated\n", pfn);
+               pr_info("soft_offline: %#lx: invalidated\n", pfn);
                goto done;
        }
 
@@ -1344,13 +1344,13 @@ int soft_offline_page(struct page *page, int flags)
                list_add(&page->lru, &pagelist);
                ret = migrate_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, 0);
                if (ret) {
-                       pr_debug("soft offline: %#lx: migration failed %d, type %lx\n",
+                       pr_info("soft offline: %#lx: migration failed %d, type %lx\n",
                                pfn, ret, page->flags);
                        if (ret > 0)
                                ret = -EIO;
                }
        } else {
-               pr_debug("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",
+               pr_info("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",
                                pfn, ret, page_count(page), page->flags);
        }
        if (ret)