diff options
Diffstat (limited to 'sys/vm/vm_fault.c')
| -rw-r--r-- | sys/vm/vm_fault.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index e647288..bd7de42 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -868,13 +868,17 @@ vnode_locked: } } /* - * update lastr imperfectly (we do not know how much - * getpages will actually read), but good enough. + * If the page was filled by a pager, update the map entry's + * last read offset. Since the pager does not return the + * actual set of pages that it read, this update is based on + * the requested set. Typically, the requested and actual + * sets are the same. * * XXX The following assignment modifies the map * without holding a write lock on it. */ - fs.entry->lastr = fs.pindex + faultcount - behind; + if (hardfault) + fs.entry->lastr = fs.pindex + faultcount - behind; if (prot & VM_PROT_WRITE) { vm_object_set_writeable_dirty(fs.object); |
