On Sun, Apr 07, 2024 at 09:11:20PM +0100, Matthew Wilcox (Oracle) wrote:
> -static inline bool is_file_hugepages(struct file *file)
> +static inline bool is_file_hugepages(const struct file *file)
> {
> - if (file->f_op == &hugetlbfs_file_operations)
> - return true;
> -
> - return is_file_shm_hugepages(file);
> + return file->f_op->fop_flags & FOP_HUGE_PAGES;
> }
Extra cacheline to pull can be costly on a sufficiently hot path...
