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update comments in page_remote_pte function::pmm.c

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This commit is contained in:
chyyuu 2013-10-12 07:59:22 +08:00
parent 3f3d52cf72
commit 0612d83623
7 changed files with 7 additions and 7 deletions
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2
labcodes/lab2/kern/mm/pmm.c
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@ -417,7 +417,7 @@ page_remove_pte(pde_t *pgdir, uintptr_t la, pte_t *ptep) {
* PTE_P 0x001 // page table/directory entry flags bit : Present * PTE_P 0x001 // page table/directory entry flags bit : Present
*/ */
#if 0 #if 0
if (0) { //(1) check if page directory is present if (0) { //(1) check if this page table entry is present
struct Page *page = NULL; //(2) find corresponding page to pte struct Page *page = NULL; //(2) find corresponding page to pte
//(3) decrease page reference //(3) decrease page reference
//(4) and free this page when page reference reachs 0 //(4) and free this page when page reference reachs 0

2
labcodes/lab3/kern/mm/pmm.c
View File

@ -430,7 +430,7 @@ page_remove_pte(pde_t *pgdir, uintptr_t la, pte_t *ptep) {
* PTE_P 0x001 // page table/directory entry flags bit : Present * PTE_P 0x001 // page table/directory entry flags bit : Present
*/ */
#if 0 #if 0
if (0) { //(1) check if page directory is present if (0) { //(1) check if this page table entry is present
struct Page *page = NULL; //(2) find corresponding page to pte struct Page *page = NULL; //(2) find corresponding page to pte
//(3) decrease page reference //(3) decrease page reference
//(4) and free this page when page reference reachs 0 //(4) and free this page when page reference reachs 0

2
labcodes/lab4/kern/mm/pmm.c
View File

@ -433,7 +433,7 @@ page_remove_pte(pde_t *pgdir, uintptr_t la, pte_t *ptep) {
* PTE_P 0x001 // page table/directory entry flags bit : Present * PTE_P 0x001 // page table/directory entry flags bit : Present
*/ */
#if 0 #if 0
if (0) { //(1) check if page directory is present if (0) { //(1) check if this page table entry is present
struct Page *page = NULL; //(2) find corresponding page to pte struct Page *page = NULL; //(2) find corresponding page to pte
//(3) decrease page reference //(3) decrease page reference
//(4) and free this page when page reference reachs 0 //(4) and free this page when page reference reachs 0

2
labcodes/lab5/kern/mm/pmm.c
View File

@ -433,7 +433,7 @@ page_remove_pte(pde_t *pgdir, uintptr_t la, pte_t *ptep) {
* PTE_P 0x001 // page table/directory entry flags bit : Present * PTE_P 0x001 // page table/directory entry flags bit : Present
*/ */
#if 0 #if 0
if (0) { //(1) check if page directory is present if (0) { //(1) check if this page table entry is present
struct Page *page = NULL; //(2) find corresponding page to pte struct Page *page = NULL; //(2) find corresponding page to pte
//(3) decrease page reference //(3) decrease page reference
//(4) and free this page when page reference reachs 0 //(4) and free this page when page reference reachs 0

2
labcodes/lab6/kern/mm/pmm.c
View File

@ -433,7 +433,7 @@ page_remove_pte(pde_t *pgdir, uintptr_t la, pte_t *ptep) {
* PTE_P 0x001 // page table/directory entry flags bit : Present * PTE_P 0x001 // page table/directory entry flags bit : Present
*/ */
#if 0 #if 0
if (0) { //(1) check if page directory is present if (0) { //(1) check if this page table entry is present
struct Page *page = NULL; //(2) find corresponding page to pte struct Page *page = NULL; //(2) find corresponding page to pte
//(3) decrease page reference //(3) decrease page reference
//(4) and free this page when page reference reachs 0 //(4) and free this page when page reference reachs 0

2
labcodes/lab7/kern/mm/pmm.c
View File

@ -433,7 +433,7 @@ page_remove_pte(pde_t *pgdir, uintptr_t la, pte_t *ptep) {
* PTE_P 0x001 // page table/directory entry flags bit : Present * PTE_P 0x001 // page table/directory entry flags bit : Present
*/ */
#if 0 #if 0
if (0) { //(1) check if page directory is present if (0) { //(1) check if this page table entry is present
struct Page *page = NULL; //(2) find corresponding page to pte struct Page *page = NULL; //(2) find corresponding page to pte
//(3) decrease page reference //(3) decrease page reference
//(4) and free this page when page reference reachs 0 //(4) and free this page when page reference reachs 0

2
labcodes/lab8/kern/mm/pmm.c
View File

@ -433,7 +433,7 @@ page_remove_pte(pde_t *pgdir, uintptr_t la, pte_t *ptep) {
* PTE_P 0x001 // page table/directory entry flags bit : Present * PTE_P 0x001 // page table/directory entry flags bit : Present
*/ */
#if 0 #if 0
if (0) { //(1) check if page directory is present if (0) { //(1) check if this page table entry is present
struct Page *page = NULL; //(2) find corresponding page to pte struct Page *page = NULL; //(2) find corresponding page to pte
//(3) decrease page reference //(3) decrease page reference
//(4) and free this page when page reference reachs 0 //(4) and free this page when page reference reachs 0