Replace the deprecated one-element array with a modern flexible-array
member in the struct nfs4_flexfile_layoutreturn_args.

Adjust the struct size accordingly.

There are no binary differences after this conversion.

Link: https://github.com/KSPP/linux/issues/79
Signed-off-by: Thorsten Blum <[email protected]>
---
 fs/nfs/flexfilelayout/flexfilelayout.c | 2 +-
 fs/nfs/flexfilelayout/flexfilelayout.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c 
b/fs/nfs/flexfilelayout/flexfilelayout.c
index 39ba9f4208aa..fc698fa9aaea 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -2224,7 +2224,7 @@ ff_layout_prepare_layoutreturn(struct 
nfs4_layoutreturn_args *args)
        struct nfs4_flexfile_layoutreturn_args *ff_args;
        struct nfs4_flexfile_layout *ff_layout = 
FF_LAYOUT_FROM_HDR(args->layout);
 
-       ff_args = kmalloc(sizeof(*ff_args), nfs_io_gfp_mask());
+       ff_args = kmalloc(struct_size(ff_args, pages, 1), nfs_io_gfp_mask());
        if (!ff_args)
                goto out_nomem;
        ff_args->pages[0] = alloc_page(nfs_io_gfp_mask());
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h 
b/fs/nfs/flexfilelayout/flexfilelayout.h
index f84b3fb0dddd..a269753f9a46 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.h
+++ b/fs/nfs/flexfilelayout/flexfilelayout.h
@@ -115,7 +115,7 @@ struct nfs4_flexfile_layoutreturn_args {
        struct nfs42_layoutstat_devinfo devinfo[FF_LAYOUTSTATS_MAXDEV];
        unsigned int num_errors;
        unsigned int num_dev;
-       struct page *pages[1];
+       struct page *pages[];
 };
 
 static inline struct nfs4_flexfile_layout *
-- 
2.46.0


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