diff mbox series

[v2,11/48] libnvdimm/pfn_dev: increase MAX_STRUCT_PAGE_SIZE

Message ID 20220329124017.737571-12-glider@google.com (mailing list archive)
State New
Headers show
Series Add KernelMemorySanitizer infrastructure | expand

Commit Message

Alexander Potapenko March 29, 2022, 12:39 p.m. UTC 
KMSAN adds extra metadata fields to struct page, so it does not fit into
64 bytes anymore.

Signed-off-by: Alexander Potapenko <glider@google.com>
---
Link: https://linux-review.googlesource.com/id/I353796acc6a850bfd7bb342aa1b63e616fc614f1
---
 drivers/nvdimm/nd.h       | 2 +-
 drivers/nvdimm/pfn_devs.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index 6f8ce114032d0..b50aecd1dd423 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -663,7 +663,7 @@  void devm_namespace_disable(struct device *dev,
 		struct nd_namespace_common *ndns);
 #if IS_ENABLED(CONFIG_ND_CLAIM)
 /* max struct page size independent of kernel config */
-#define MAX_STRUCT_PAGE_SIZE 64
+#define MAX_STRUCT_PAGE_SIZE 128
 int nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap);
 #else
 static inline int nvdimm_setup_pfn(struct nd_pfn *nd_pfn,
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c
index 58eda16f5c534..07a539195cc8b 100644
--- a/drivers/nvdimm/pfn_devs.c
+++ b/drivers/nvdimm/pfn_devs.c
@@ -785,7 +785,7 @@  static int nd_pfn_init(struct nd_pfn *nd_pfn)
 		 * when populating the vmemmap. This *should* be equal to
 		 * PMD_SIZE for most architectures.
 		 *
-		 * Also make sure size of struct page is less than 64. We
+		 * Also make sure size of struct page is less than 128. We
 		 * want to make sure we use large enough size here so that
 		 * we don't have a dynamic reserve space depending on
 		 * struct page size. But we also want to make sure we notice