Function report |
Source Code:mm\swapfile.c |
Create Date:2022-07-28 15:16:43 |
| Last Modify:2020-03-17 22:19:49 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:The cluster corresponding to page_nr decreases one usage. If the usage* counter becomes 0, which means no page in the cluster is in using, we can* optionally discard the cluster and add it to free cluster list.
Proto:static void dec_cluster_info_page(struct swap_info_struct *p, struct swap_cluster_info *cluster_info, unsigned long page_nr)
Type:void
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct swap_info_struct * | p | |
| struct swap_cluster_info * | cluster_info | |
| unsigned long | page_nr |
| 558 | idx = page_nr / SWAPFILE_CLUSTER |
| 560 | If Not cluster_info Then Return |
| 563 | VM_BUG_ON(cluster_count( & cluster_info[idx]) == 0) |
| 564 | cluster_set_count( & cluster_info[idx], cluster_count( & cluster_info[idx]) - 1) |
| 567 | If cluster_count( & cluster_info[idx]) == 0 Then free_cluster(p, idx) |
| Name | Describe |
|---|---|
| swap_entry_free |
| Source code conversion tool public plug-in interface | X |
|---|---|
| Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |