d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Lock a vm object when freeing a page from it.

Browse Source
This commit is contained in:
alc 2003-07-05 20:51:22 +00:00
parent 34719e1dbb
commit bab2fb677f
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
sys/vm/vm_contig.c
View File

@ -144,6 +144,7 @@ contigmalloc1(
{
int i, s, start;
vm_paddr_t phys;
vm_object_t object;
vm_offset_t addr, tmp_addr;
int pass, pqtype;
vm_page_t pga = vm_page_array;
@ -207,8 +208,14 @@ contigmalloc1(
vm_page_t m = &pga[i];
if ((m->queue - m->pc) == PQ_CACHE) {
object = m->object;
if (!VM_OBJECT_TRYLOCK(object)) {
start++;
goto again;
}
vm_page_busy(m);
vm_page_free(m);
VM_OBJECT_UNLOCK(object);
}
mtx_lock_spin(&vm_page_queue_free_mtx);
vm_pageq_remove_nowakeup(m);