diff mbox series

[v4,4/5] mm/memory-failure: move hwpoison_filter() higher up

Message ID 20240524215306.2705454-5-jane.chu@oracle.com (mailing list archive)
State New
Headers show
Series Enhance soft hwpoison handling and injection | expand

Commit Message

Jane Chu May 24, 2024, 9:53 p.m. UTC 
Move hwpoison_filter() higher up as there is no need to spend a lot
cycles only to find out later that the page is supposed to be skipped
from hwpoison handling.

Signed-off-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
---
 mm/memory-failure.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index d1fb1d6f6b11..85659dd0ea32 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -2300,6 +2300,18 @@  int memory_failure(unsigned long pfn, int flags)
 	}
 
 	folio = page_folio(p);
+
+	/* filter pages that are protected from hwpoison test by users */
+	folio_lock(folio);
+	if (hwpoison_filter(p)) {
+		ClearPageHWPoison(p);
+		folio_unlock(folio);
+		folio_put(folio);
+		res = -EOPNOTSUPP;
+		goto unlock_mutex;
+	}
+	folio_unlock(folio);
+
 	if (folio_test_large(folio)) {
 		/*
 		 * The flag must be set after the refcount is bumped
@@ -2363,14 +2375,6 @@  int memory_failure(unsigned long pfn, int flags)
 	 */
 	page_flags = folio->flags;
 
-	if (hwpoison_filter(p)) {
-		ClearPageHWPoison(p);
-		folio_unlock(folio);
-		folio_put(folio);
-		res = -EOPNOTSUPP;
-		goto unlock_mutex;
-	}
-
 	/*
 	 * __munlock_folio() may clear a writeback folio's LRU flag without
 	 * the folio lock. We need to wait for writeback completion for this