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    Subject[PATCH v4 10/45] libnvdimm/pfn_dev: increase MAX_STRUCT_PAGE_SIZE
    From
    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 --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
    index ec5219680092d..85ca5b4da3cf3 100644
    --- a/drivers/nvdimm/nd.h
    +++ b/drivers/nvdimm/nd.h
    @@ -652,7 +652,7 @@ 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 0e92ab4b32833..61af072ac98f9 100644
    --- a/drivers/nvdimm/pfn_devs.c
    +++ b/drivers/nvdimm/pfn_devs.c
    @@ -787,7 +787,7 @@ 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
    --
    2.37.0.rc0.161.g10f37bed90-goog
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