static void sg_kfree(struct scatterlist *sg, unsigned int nents) { if (nents == SG_MAX_SINGLE_ALLOC) { kmemleak_free(sg); free_page((unsigned long) sg); } else kfree(sg); }
static void free_page_cgroup(void *addr) { if (is_vmalloc_addr(addr)) { vfree(addr); } else { struct page *page = virt_to_page(addr); size_t table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION; BUG_ON(PageReserved(page)); kmemleak_free(addr); free_pages_exact(addr, table_size); } }
void kfree(const void *block) { struct page *sp; trace_kfree(_RET_IP_, block); if (unlikely(ZERO_OR_NULL_PTR(block))) return; kmemleak_free(block); sp = virt_to_page(block); if (PageSlab(sp)) { int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); unsigned int *m = (unsigned int *)(block - align); slob_free(m, *m + align); } else __free_pages(sp, compound_order(sp)); }