Merge tag 'asoc-v5.13' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v5.13

A lot of changes here for quite a quiet release in subsystem terms -
there's been a lot of fixes and cleanups all over the subsystem both
from generic work and from people working on specific drivers.

 - More cleanup and consolidation work in the core and the generic card
   drivers from Morimoto-san.
 - Lots of cppcheck fixes for Pierre-Louis Brossart.
 - New drivers for Freescale i.MX DMA over rpmsg, Mediatek MT6358
   accessory detection, and Realtek RT1019, RT1316, RT711 and RT715.

1 files changed, 20 insertions, 0 deletions

diff --git a/mm/internal.h b/mm/internal.h
index 1432feec62df..cb3c5e0a7799 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -97,6 +97,26 @@ static inline void set_page_refcounted(struct page *page)
 	set_page_count(page, 1);
 }
 
+/*
+ * When kernel touch the user page, the user page may be have been marked
+ * poison but still mapped in user space, if without this page, the kernel
+ * can guarantee the data integrity and operation success, the kernel is
+ * better to check the posion status and avoid touching it, be good not to
+ * panic, coredump for process fatal signal is a sample case matching this
+ * scenario. Or if kernel can't guarantee the data integrity, it's better
+ * not to call this function, let kernel touch the poison page and get to
+ * panic.
+ */
+static inline bool is_page_poisoned(struct page *page)
+{
+	if (PageHWPoison(page))
+		return true;
+	else if (PageHuge(page) && PageHWPoison(compound_head(page)))
+		return true;
+
+	return false;
+}
+
 extern unsigned long highest_memmap_pfn;
 
 /*