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Code Issues Releases Activity

When calling vget() on a vnode-backed vm object, acquire the vnode

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interlock before releasing the vm object's lock.
This commit is contained in:
Alan Cox 2003-09-17 06:55:42 +00:00
parent 9e3275a35b
commit 4b5f553179
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=120150
1 changed files with 3 additions and 2 deletions
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5
sys/vm/vm_pageout.c
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@ -926,13 +926,14 @@ vm_pageout_scan(int pass)
*/
if (object->type == OBJT_VNODE) {
vp = object->handle;
mp = NULL;
if (vp->v_type == VREG)
vn_start_write(vp, &mp, V_NOWAIT);
vm_page_unlock_queues();
VI_LOCK(vp);
VM_OBJECT_UNLOCK(object);
if (vget(vp, LK_EXCLUSIVE|LK_TIMELOCK, curthread)) {
if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK |
LK_TIMELOCK, curthread)) {
VM_OBJECT_LOCK(object);
vm_page_lock_queues();
++pageout_lock_miss;