Author: kib
Date: Wed Feb 8 15:19:49 2012
New Revision: 231205
URL: http://svn.freebsd.org/changeset/base/231205
Log:
MFC r230553:
When doing vflush(WRITECLOSE), clean vnode pages.
Unmounts do vfs_msync() before calling VFS_UNMOUNT(), but there is
still a race allowing a process to dirty pages after msync
finished. Remounts rw->ro just left dirty pages in system.
Modified:
stable/8/sys/kern/vfs_subr.c
Directory Properties:
stable/8/sys/ (props changed)
Modified: stable/8/sys/kern/vfs_subr.c
==============================================================================
--- stable/8/sys/kern/vfs_subr.c Wed Feb 8 15:07:19 2012
(r231204)
+++ stable/8/sys/kern/vfs_subr.c Wed Feb 8 15:19:49 2012
(r231205)
@@ -2501,6 +2501,18 @@ loop:
* vnodes open for writing.
*/
if (flags & WRITECLOSE) {
+ if (vp->v_object != NULL) {
+ VM_OBJECT_LOCK(vp->v_object);
+ vm_object_page_clean(vp->v_object, 0, 0, 0);
+ VM_OBJECT_UNLOCK(vp->v_object);
+ }
+ error = VOP_FSYNC(vp, MNT_WAIT, td);
+ if (error != 0) {
+ VOP_UNLOCK(vp, 0);
+ vdrop(vp);
+ MNT_VNODE_FOREACH_ABORT(mp, mvp);
+ return (error);
+ }
error = VOP_GETATTR(vp, &vattr, td->td_ucred);
VI_LOCK(vp);
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