io_file_table
struct io_file_table file_table;
struct io_file_table *table = &ctx->file_table;
bool io_alloc_file_tables(struct io_ring_ctx *ctx, struct io_file_table *table,
void io_free_file_tables(struct io_ring_ctx *ctx, struct io_file_table *table)
static inline void io_file_bitmap_clear(struct io_file_table *table, int bit)
static inline void io_file_bitmap_set(struct io_file_table *table, int bit)
bool io_alloc_file_tables(struct io_ring_ctx *ctx, struct io_file_table *table, unsigned nr_files);
void io_free_file_tables(struct io_ring_ctx *ctx, struct io_file_table *table);