Author: alc
Date: Tue Jun 4 15:40:45 2013
New Revision: 251383
URL: http://svnweb.freebsd.org/changeset/base/251383
Log:
Eliminate unnecessary vm object locking from tmpfs_nocacheread().
Modified:
head/sys/fs/tmpfs/tmpfs_vnops.c
Modified: head/sys/fs/tmpfs/tmpfs_vnops.c
==============================================================================
--- head/sys/fs/tmpfs/tmpfs_vnops.c Tue Jun 4 15:35:37 2013
(r251382)
+++ head/sys/fs/tmpfs/tmpfs_vnops.c Tue Jun 4 15:40:45 2013
(r251383)
@@ -490,7 +490,6 @@ tmpfs_nocacheread(vm_object_t tobj, vm_p
vm_page_unlock(m);
VM_OBJECT_WUNLOCK(tobj);
error = uiomove_fromphys(&m, offset, tlen, uio);
- VM_OBJECT_WLOCK(tobj);
vm_page_lock(m);
vm_page_unhold(m);
if (m->queue == PQ_NONE) {
@@ -500,7 +499,6 @@ tmpfs_nocacheread(vm_object_t tobj, vm_p
vm_page_requeue(m);
}
vm_page_unlock(m);
- VM_OBJECT_WUNLOCK(tobj);
return (error);
}
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