system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-09-20 16:54:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

In vm_page_remove(), avoid calling vm_page_splay() if the object's memq

Browse source 
is empty.
This commit is contained in:
Alan Cox 2002-11-09 08:27:42 +00:00
parent 7b13078b41
commit 1f7c5f98d7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=106691
1 changed files with 13 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
sys/vm/vm_page.c
View file

@ -589,21 +589,24 @@ vm_page_insert(vm_page_t m, vm_object_t object, vm_pindex_t pindex)
/*
* Now link into the object's ordered list of backed pages.
*/
root = vm_page_splay(pindex, object->root);
root = object->root;
if (root == NULL) {
m->left = NULL;
m->right = NULL;
TAILQ_INSERT_TAIL(&object->memq, m, listq);
} else if (pindex < root->pindex) {
m->left = root->left;
m->right = root;
root->left = NULL;
TAILQ_INSERT_BEFORE(root, m, listq);
} else {
m->right = root->right;
m->left = root;
root->right = NULL;
TAILQ_INSERT_AFTER(&object->memq, root, m, listq);
root = vm_page_splay(pindex, root);
if (pindex < root->pindex) {
m->left = root->left;
m->right = root;
root->left = NULL;
TAILQ_INSERT_BEFORE(root, m, listq);
} else {
m->right = root->right;
m->left = root;
root->right = NULL;
TAILQ_INSERT_AFTER(&object->memq, root, m, listq);
}
}
object->root = m;
object->generation++;