Author: alc
Date: Tue May 12 05:49:02 2009
New Revision: 192010
URL: http://svn.freebsd.org/changeset/base/192010
Log:
Eliminate gratuitous clearing of the page's dirty mask.
Modified:
head/sys/fs/smbfs/smbfs_io.c
head/sys/nfsclient/nfs_bio.c
head/sys/vm/vnode_pager.c
Modified: head/sys/fs/smbfs/smbfs_io.c
==============================================================================
--- head/sys/fs/smbfs/smbfs_io.c Tue May 12 03:30:25 2009
(r192009)
+++ head/sys/fs/smbfs/smbfs_io.c Tue May 12 05:49:02 2009
(r192010)
@@ -517,7 +517,8 @@ smbfs_getpages(ap)
* Read operation filled an entire page
*/
m->valid = VM_PAGE_BITS_ALL;
- vm_page_undirty(m);
+ KASSERT(m->dirty == 0,
+ ("smbfs_getpages: page %p is dirty", m));
} else if (size > toff) {
/*
* Read operation filled a partial page.
Modified: head/sys/nfsclient/nfs_bio.c
==============================================================================
--- head/sys/nfsclient/nfs_bio.c Tue May 12 03:30:25 2009
(r192009)
+++ head/sys/nfsclient/nfs_bio.c Tue May 12 05:49:02 2009
(r192010)
@@ -209,7 +209,8 @@ nfs_getpages(struct vop_getpages_args *a
* Read operation filled an entire page
*/
m->valid = VM_PAGE_BITS_ALL;
- vm_page_undirty(m);
+ KASSERT(m->dirty == 0,
+ ("nfs_getpages: page %p is dirty", m));
} else if (size > toff) {
/*
* Read operation filled a partial page.
Modified: head/sys/vm/vnode_pager.c
==============================================================================
--- head/sys/vm/vnode_pager.c Tue May 12 03:30:25 2009 (r192009)
+++ head/sys/vm/vnode_pager.c Tue May 12 05:49:02 2009 (r192010)
@@ -762,7 +762,8 @@ vnode_pager_generic_getpages(vp, m, byte
return VM_PAGER_OK;
} else if (reqblock == -1) {
pmap_zero_page(m[reqpage]);
- vm_page_undirty(m[reqpage]);
+ KASSERT(m[reqpage]->dirty == 0,
+ ("vnode_pager_generic_getpages: page %p is dirty", m));
m[reqpage]->valid = VM_PAGE_BITS_ALL;
vm_page_lock_queues();
for (i = 0; i < count; i++)
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