* VMAs below us in the VMA rbtree and its ->vm_prev. This helps * get_unmapped_area find a free area of the right size. *此VMA左侧最大的可用内存间隙(以字节为单位)。在此VMA和vma-> vm_prev之间, * 或者在VMA rbtree中我们下面的一个VMA与其->vm_prev之间。 * 这有助于get_unmapped_...
get_unmapped_area(file, addr + TASK_UNMAPPED_BASE, len, pgoff, flags); } /*根据 file 和 flages 设置最终的 vm_flags*/ @@ -338,6 +339,7 @@ unsigned long do_mmap_pgoff(struct file * file, unsigned long addr, } } out: /*更新 mm_struct 的统计信息*/ mm->total_vm += len >...
一、vm_area_struct 结构体成员分析 vm_area_struct 结构体中相关成员解析 : unsigned long vm_start 成员: 虚拟内存空间 起始地址 ; 代码语言:javascript 复制 unsigned long vm_start; /* Our start address within vm_mm. */ unsigned long vm_end 成员: 虚拟内存空间 终止地址 后的 第一个字节 ; 代码...
struct vm_area_struct *vm_next, *vm_prev; struct rb_node vm_rb; /* * Largest free memory gap in bytes to the left of this VMA. * Either between this VMA and vma->vm_prev, or between one of the * VMAs below us in the VMA rbtree and its ->vm_prev. This helps * get_unm...
* get_unmapped_area find a free area of the right size. */unsigned long rb_subtree_gap;/* Second cache line starts here. */struct mm_struct*vm_mm;/* The address space we belong to. */pgprot_t vm_page_prot;/* Access permissions of this VMA. */unsigned long vm_flags;/* Flags,...
struct vm_area_struct * find_vma_prev(struct mm_struct *mm, unsigned long addr, struct vm_area_struct **pprev) 同find_vma,与find_vma的区别是此处返回的是find_vma查找到的vma的前驱(vma->vm_prev) unsigned long get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,...
dirty_background_bytes hugepages_treat_as_movable min_slab_ratio oom_kill_allocating_task unmap_area_factor dirty_background_ratio hugetlb_shm_group min_unmapped_ratio overcommit_memory vfs_cache_pressure dirty_bytes laptop_mode mmap_min_addr overcommit_ratio would_have_oomkilled ...
* get_unmapped_area find a free area of the right size. */unsignedlongrb_subtree_gap;/*以当前vma为根,左子树中最大可用虚拟内存区域的大小*//* Second cache line starts here. */structmm_struct*vm_mm;/* The address space we belong to. *//*同一进程所有的vma指向的vm_mm是相同的*/pgprot...
Finally, we will discuss how the semantic information can be used by robots to learn to navigate in unmapped areas much like humans are able to visit and navigate in new, never visited before locales. Our new approach, SayNav, leverages common-sense knowledge from Large Language Models (LLMs...
VMK_ADDR_UNMAPPED 195887241 0xbad0089 EFAULT Address temporarily unmapped VMK_INVALID_BUDDY_TYPE 195887242 0xbad008a ENOMEM Invalid buddy type VMK_LPAGE_INFO_NOT_FOUND 195887243 0xbad008b ENOMEM Large page info not found VMK_LPAGE_INFO_INVALID 195887244 0xbad008c EINVAL Invalid large page info...