mem_used
u64 orig_size, mem_used = 0;
mem_used = zs_get_total_pages(zram->mem_pool);
mem_used << PAGE_SHIFT,
still_used = atomic_xchg(&buf->mem_used, 0);
if (atomic_read(&port->buf.mem_used) > port->buf.mem_limit)
atomic_add(size, &port->buf.mem_used);
WARN_ON(atomic_sub_return(b->size, &buf->mem_used) < 0);
atomic_set(&buf->mem_used, 0);
int space = port->buf.mem_limit - atomic_read(&port->buf.mem_used);
atomic_t mem_used; /* In-use buffers excluding free list */
int mem_used; /* used memory size */
size, mem->nslabs, mem_used(mem));
*val = mem_used(mem);
sflist->mem_used += smp->v.truesize;
sflist->mem_used = 0;
sflist->mem_used -= sp->v.truesize;
sflist->mem_used += sp->v.truesize;