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-rw-r--r--mm/memory-failure.c152
1 files changed, 75 insertions, 77 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 660c21859118..a0d9b4ac7d54 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -595,10 +595,9 @@ struct task_struct *task_early_kill(struct task_struct *tsk, int force_early)
/*
* Collect processes when the error hit an anonymous page.
*/
-static void collect_procs_anon(struct page *page, struct list_head *to_kill,
- int force_early)
+static void collect_procs_anon(struct folio *folio, struct page *page,
+ struct list_head *to_kill, int force_early)
{
- struct folio *folio = page_folio(page);
struct vm_area_struct *vma;
struct task_struct *tsk;
struct anon_vma *av;
@@ -633,12 +632,12 @@ static void collect_procs_anon(struct page *page, struct list_head *to_kill,
/*
* Collect processes when the error hit a file mapped page.
*/
-static void collect_procs_file(struct page *page, struct list_head *to_kill,
- int force_early)
+static void collect_procs_file(struct folio *folio, struct page *page,
+ struct list_head *to_kill, int force_early)
{
struct vm_area_struct *vma;
struct task_struct *tsk;
- struct address_space *mapping = page->mapping;
+ struct address_space *mapping = folio->mapping;
pgoff_t pgoff;
i_mmap_lock_read(mapping);
@@ -704,17 +703,17 @@ static void collect_procs_fsdax(struct page *page,
/*
* Collect the processes who have the corrupted page mapped to kill.
*/
-static void collect_procs(struct page *page, struct list_head *tokill,
- int force_early)
+static void collect_procs(struct folio *folio, struct page *page,
+ struct list_head *tokill, int force_early)
{
- if (!page->mapping)
+ if (!folio->mapping)
return;
if (unlikely(PageKsm(page)))
collect_procs_ksm(page, tokill, force_early);
else if (PageAnon(page))
- collect_procs_anon(page, tokill, force_early);
+ collect_procs_anon(folio, page, tokill, force_early);
else
- collect_procs_file(page, tokill, force_early);
+ collect_procs_file(folio, page, tokill, force_early);
}
struct hwpoison_walk {
@@ -902,39 +901,38 @@ static const char * const action_page_types[] = {
* The page count will stop it from being freed by unpoison.
* Stress tests should be aware of this memory leak problem.
*/
-static int delete_from_lru_cache(struct page *p)
+static int delete_from_lru_cache(struct folio *folio)
{
- if (isolate_lru_page(p)) {
+ if (folio_isolate_lru(folio)) {
/*
* Clear sensible page flags, so that the buddy system won't
- * complain when the page is unpoison-and-freed.
+ * complain when the folio is unpoison-and-freed.
*/
- ClearPageActive(p);
- ClearPageUnevictable(p);
+ folio_clear_active(folio);
+ folio_clear_unevictable(folio);
/*
* Poisoned page might never drop its ref count to 0 so we have
* to uncharge it manually from its memcg.
*/
- mem_cgroup_uncharge(page_folio(p));
+ mem_cgroup_uncharge(folio);
/*
- * drop the page count elevated by isolate_lru_page()
+ * drop the refcount elevated by folio_isolate_lru()
*/
- put_page(p);
+ folio_put(folio);
return 0;
}
return -EIO;
}
-static int truncate_error_page(struct page *p, unsigned long pfn,
+static int truncate_error_folio(struct folio *folio, unsigned long pfn,
struct address_space *mapping)
{
int ret = MF_FAILED;
- if (mapping->a_ops->error_remove_page) {
- struct folio *folio = page_folio(p);
- int err = mapping->a_ops->error_remove_page(mapping, p);
+ if (mapping->a_ops->error_remove_folio) {
+ int err = mapping->a_ops->error_remove_folio(mapping, folio);
if (err != 0)
pr_info("%#lx: Failed to punch page: %d\n", pfn, err);
@@ -947,7 +945,7 @@ static int truncate_error_page(struct page *p, unsigned long pfn,
* If the file system doesn't support it just invalidate
* This fails on dirty or anything with private pages
*/
- if (invalidate_inode_page(p))
+ if (mapping_evict_folio(mapping, folio))
ret = MF_RECOVERED;
else
pr_info("%#lx: Failed to invalidate\n", pfn);
@@ -1014,17 +1012,18 @@ static int me_unknown(struct page_state *ps, struct page *p)
*/
static int me_pagecache_clean(struct page_state *ps, struct page *p)
{
+ struct folio *folio = page_folio(p);
int ret;
struct address_space *mapping;
bool extra_pins;
- delete_from_lru_cache(p);
+ delete_from_lru_cache(folio);
/*
- * For anonymous pages we're done the only reference left
+ * For anonymous folios the only reference left
* should be the one m_f() holds.
*/
- if (PageAnon(p)) {
+ if (folio_test_anon(folio)) {
ret = MF_RECOVERED;
goto out;
}
@@ -1036,11 +1035,9 @@ static int me_pagecache_clean(struct page_state *ps, struct page *p)
* has a reference, because it could be file system metadata
* and that's not safe to truncate.
*/
- mapping = page_mapping(p);
+ mapping = folio_mapping(folio);
if (!mapping) {
- /*
- * Page has been teared down in the meanwhile
- */
+ /* Folio has been torn down in the meantime */
ret = MF_FAILED;
goto out;
}
@@ -1056,12 +1053,12 @@ static int me_pagecache_clean(struct page_state *ps, struct page *p)
*
* Open: to take i_rwsem or not for this? Right now we don't.
*/
- ret = truncate_error_page(p, page_to_pfn(p), mapping);
+ ret = truncate_error_folio(folio, page_to_pfn(p), mapping);
if (has_extra_refcount(ps, p, extra_pins))
ret = MF_FAILED;
out:
- unlock_page(p);
+ folio_unlock(folio);
return ret;
}
@@ -1139,15 +1136,16 @@ static int me_pagecache_dirty(struct page_state *ps, struct page *p)
*/
static int me_swapcache_dirty(struct page_state *ps, struct page *p)
{
+ struct folio *folio = page_folio(p);
int ret;
bool extra_pins = false;
- ClearPageDirty(p);
+ folio_clear_dirty(folio);
/* Trigger EIO in shmem: */
- ClearPageUptodate(p);
+ folio_clear_uptodate(folio);
- ret = delete_from_lru_cache(p) ? MF_FAILED : MF_DELAYED;
- unlock_page(p);
+ ret = delete_from_lru_cache(folio) ? MF_FAILED : MF_DELAYED;
+ folio_unlock(folio);
if (ret == MF_DELAYED)
extra_pins = true;
@@ -1165,7 +1163,7 @@ static int me_swapcache_clean(struct page_state *ps, struct page *p)
delete_from_swap_cache(folio);
- ret = delete_from_lru_cache(p) ? MF_FAILED : MF_RECOVERED;
+ ret = delete_from_lru_cache(folio) ? MF_FAILED : MF_RECOVERED;
folio_unlock(folio);
if (has_extra_refcount(ps, p, false))
@@ -1182,25 +1180,25 @@ static int me_swapcache_clean(struct page_state *ps, struct page *p)
*/
static int me_huge_page(struct page_state *ps, struct page *p)
{
+ struct folio *folio = page_folio(p);
int res;
- struct page *hpage = compound_head(p);
struct address_space *mapping;
bool extra_pins = false;
- mapping = page_mapping(hpage);
+ mapping = folio_mapping(folio);
if (mapping) {
- res = truncate_error_page(hpage, page_to_pfn(p), mapping);
+ res = truncate_error_folio(folio, page_to_pfn(p), mapping);
/* The page is kept in page cache. */
extra_pins = true;
- unlock_page(hpage);
+ folio_unlock(folio);
} else {
- unlock_page(hpage);
+ folio_unlock(folio);
/*
* migration entry prevents later access on error hugepage,
* so we can free and dissolve it into buddy to save healthy
* subpages.
*/
- put_page(hpage);
+ folio_put(folio);
if (__page_handle_poison(p) >= 0) {
page_ref_inc(p);
res = MF_RECOVERED;
@@ -1571,7 +1569,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
* This check implies we don't kill processes if their pages
* are in the swap cache early. Those are always late kills.
*/
- if (!page_mapped(hpage))
+ if (!page_mapped(p))
return true;
if (PageSwapCache(p)) {
@@ -1602,7 +1600,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
* mapped in dirty form. This has to be done before try_to_unmap,
* because ttu takes the rmap data structures down.
*/
- collect_procs(hpage, &tokill, flags & MF_ACTION_REQUIRED);
+ collect_procs(folio, p, &tokill, flags & MF_ACTION_REQUIRED);
if (PageHuge(hpage) && !PageAnon(hpage)) {
/*
@@ -1622,10 +1620,10 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
try_to_unmap(folio, ttu);
}
- unmap_success = !page_mapped(hpage);
+ unmap_success = !page_mapped(p);
if (!unmap_success)
pr_err("%#lx: failed to unmap page (mapcount=%d)\n",
- pfn, page_mapcount(hpage));
+ pfn, page_mapcount(p));
/*
* try_to_unmap() might put mlocked page in lru cache, so call
@@ -1705,7 +1703,7 @@ static void unmap_and_kill(struct list_head *to_kill, unsigned long pfn,
* mapping being torn down is communicated in siginfo, see
* kill_proc()
*/
- loff_t start = (index << PAGE_SHIFT) & ~(size - 1);
+ loff_t start = ((loff_t)index << PAGE_SHIFT) & ~(size - 1);
unmap_mapping_range(mapping, start, size, 0);
}
@@ -1772,7 +1770,7 @@ static int mf_generic_kill_procs(unsigned long long pfn, int flags,
* SIGBUS (i.e. MF_MUST_KILL)
*/
flags |= MF_ACTION_REQUIRED | MF_MUST_KILL;
- collect_procs(&folio->page, &to_kill, true);
+ collect_procs(folio, &folio->page, &to_kill, true);
unmap_and_kill(&to_kill, pfn, folio->mapping, folio->index, flags);
unlock:
@@ -2317,8 +2315,8 @@ try_again:
* We use page flags to determine what action should be taken, but
* the flags can be modified by the error containment action. One
* example is an mlocked page, where PG_mlocked is cleared by
- * page_remove_rmap() in try_to_unmap_one(). So to determine page status
- * correctly, we save a copy of the page flags at this time.
+ * folio_remove_rmap_*() in try_to_unmap_one(). So to determine page
+ * status correctly, we save a copy of the page flags at this time.
*/
page_flags = p->flags;
@@ -2602,37 +2600,37 @@ unlock_mutex:
}
EXPORT_SYMBOL(unpoison_memory);
-static bool isolate_page(struct page *page, struct list_head *pagelist)
+static bool mf_isolate_folio(struct folio *folio, struct list_head *pagelist)
{
bool isolated = false;
- if (PageHuge(page)) {
- isolated = isolate_hugetlb(page_folio(page), pagelist);
+ if (folio_test_hugetlb(folio)) {
+ isolated = isolate_hugetlb(folio, pagelist);
} else {
- bool lru = !__PageMovable(page);
+ bool lru = !__folio_test_movable(folio);
if (lru)
- isolated = isolate_lru_page(page);
+ isolated = folio_isolate_lru(folio);
else
- isolated = isolate_movable_page(page,
+ isolated = isolate_movable_page(&folio->page,
ISOLATE_UNEVICTABLE);
if (isolated) {
- list_add(&page->lru, pagelist);
+ list_add(&folio->lru, pagelist);
if (lru)
- inc_node_page_state(page, NR_ISOLATED_ANON +
- page_is_file_lru(page));
+ node_stat_add_folio(folio, NR_ISOLATED_ANON +
+ folio_is_file_lru(folio));
}
}
/*
- * If we succeed to isolate the page, we grabbed another refcount on
- * the page, so we can safely drop the one we got from get_any_page().
- * If we failed to isolate the page, it means that we cannot go further
+ * If we succeed to isolate the folio, we grabbed another refcount on
+ * the folio, so we can safely drop the one we got from get_any_page().
+ * If we failed to isolate the folio, it means that we cannot go further
* and we will return an error, so drop the reference we got from
* get_any_page() as well.
*/
- put_page(page);
+ folio_put(folio);
return isolated;
}
@@ -2645,40 +2643,40 @@ static int soft_offline_in_use_page(struct page *page)
{
long ret = 0;
unsigned long pfn = page_to_pfn(page);
- struct page *hpage = compound_head(page);
+ struct folio *folio = page_folio(page);
char const *msg_page[] = {"page", "hugepage"};
- bool huge = PageHuge(page);
+ bool huge = folio_test_hugetlb(folio);
LIST_HEAD(pagelist);
struct migration_target_control mtc = {
.nid = NUMA_NO_NODE,
.gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL,
};
- if (!huge && PageTransHuge(hpage)) {
+ if (!huge && folio_test_large(folio)) {
if (try_to_split_thp_page(page)) {
pr_info("soft offline: %#lx: thp split failed\n", pfn);
return -EBUSY;
}
- hpage = page;
+ folio = page_folio(page);
}
- lock_page(page);
+ folio_lock(folio);
if (!huge)
- wait_on_page_writeback(page);
+ folio_wait_writeback(folio);
if (PageHWPoison(page)) {
- unlock_page(page);
- put_page(page);
+ folio_unlock(folio);
+ folio_put(folio);
pr_info("soft offline: %#lx page already poisoned\n", pfn);
return 0;
}
- if (!huge && PageLRU(page) && !PageSwapCache(page))
+ if (!huge && folio_test_lru(folio) && !folio_test_swapcache(folio))
/*
* Try to invalidate first. This should work for
* non dirty unmapped page cache pages.
*/
- ret = invalidate_inode_page(page);
- unlock_page(page);
+ ret = mapping_evict_folio(folio_mapping(folio), folio);
+ folio_unlock(folio);
if (ret) {
pr_info("soft_offline: %#lx: invalidated\n", pfn);
@@ -2686,7 +2684,7 @@ static int soft_offline_in_use_page(struct page *page)
return 0;
}
- if (isolate_page(hpage, &pagelist)) {
+ if (mf_isolate_folio(folio, &pagelist)) {
ret = migrate_pages(&pagelist, alloc_migration_target, NULL,
(unsigned long)&mtc, MIGRATE_SYNC, MR_MEMORY_FAILURE, NULL);
if (!ret) {
generated by cgit (git 2.34.1) at 2024-07-01 05:42:56 +0000