From: Arnd Bergmann The newly added 'flags' variable is unused and causes a warning if CONFIG_SHMEM is disabled, since the shmem_acct_size() macro it is passed into does nothing: mm/shmem.c: In function '__shmem_file_setup': mm/shmem.c:5816:23: error: unused variable 'flags' [-Werror=unused-variable] 5816 | unsigned long flags = (vm_flags & VM_NORESERVE) ? SHMEM_F_NORESERVE : 0; | ^~~~~ Replace the macro with an equivalent inline function to get the argument checking. Fixes: 6ff1610ced56 ("mm: shmem: use SHMEM_F_* flags instead of VM_* flags") Signed-off-by: Arnd Bergmann --- mm/shmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/shmem.c b/mm/shmem.c index 3f194c9842a8..93746270c459 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -5794,7 +5794,7 @@ EXPORT_SYMBOL_GPL(shmem_truncate_range); #define shmem_vm_ops generic_file_vm_ops #define shmem_anon_vm_ops generic_file_vm_ops #define shmem_file_operations ramfs_file_operations -#define shmem_acct_size(flags, size) 0 +static inline int shmem_acct_size(unsigned long flags, loff_t size) { return 0; } #define shmem_unacct_size(flags, size) do {} while (0) static inline struct inode *shmem_get_inode(struct mnt_idmap *idmap, -- 2.39.5