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Code Issues Releases Activity

The page queues lock is no longer required by vm_page_busy() or

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vm_page_wakeup().  Reduce or eliminate its use accordingly.
This commit is contained in:
Alan Cox 2006-10-22 21:18:48 +00:00
parent b39be1b35c
commit 2a53696fb8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=163614
5 changed files with 5 additions and 16 deletions
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4
sys/dev/agp/agp.c
View File

@ -529,17 +529,13 @@ agp_generic_bind_memory(device_t dev, struct agp_memory *mem,
* Bail out. Reverse all the mappings
* and unwire the pages.
*/
vm_page_lock_queues();
vm_page_wakeup(m);
vm_page_unlock_queues();
for (k = 0; k < i + j; k += AGP_PAGE_SIZE)
AGP_UNBIND_PAGE(dev, offset + k);
goto bad;
}
}
vm_page_lock_queues();
vm_page_wakeup(m);
vm_page_unlock_queues();
}
VM_OBJECT_UNLOCK(mem->am_obj);

4
sys/kern/kern_exec.c
View File

@ -829,9 +829,7 @@ exec_map_first_page(imgp)
break;
if ((ma[i]->oflags & VPO_BUSY) || ma[i]->busy)
break;
vm_page_lock_queues();
vm_page_busy(ma[i]);
vm_page_unlock_queues();
} else {
ma[i] = vm_page_alloc(object, i,
VM_ALLOC_NORMAL);
@ -855,8 +853,8 @@ exec_map_first_page(imgp)
}
vm_page_lock_queues();
vm_page_hold(ma[0]);
vm_page_wakeup(ma[0]);
vm_page_unlock_queues();
vm_page_wakeup(ma[0]);
VM_OBJECT_UNLOCK(object);
imgp->firstpage = sf_buf_alloc(ma[0], 0);

4
sys/pci/agp.c
View File

@ -529,17 +529,13 @@ agp_generic_bind_memory(device_t dev, struct agp_memory *mem,
* Bail out. Reverse all the mappings
* and unwire the pages.
*/
vm_page_lock_queues();
vm_page_wakeup(m);
vm_page_unlock_queues();
for (k = 0; k < i + j; k += AGP_PAGE_SIZE)
AGP_UNBIND_PAGE(dev, offset + k);
goto bad;
}
}
vm_page_lock_queues();
vm_page_wakeup(m);
vm_page_unlock_queues();
}
VM_OBJECT_UNLOCK(mem->am_obj);

2
sys/vm/vm_object.c
View File

@ -1364,10 +1364,8 @@ vm_object_split(vm_map_entry_t entry)
swap_pager_copy(orig_object, new_object, offidxstart, 0);
}
VM_OBJECT_UNLOCK(orig_object);
vm_page_lock_queues();
TAILQ_FOREACH(m, &new_object->memq, listq)
vm_page_wakeup(m);
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(new_object);
entry->object.vm_object = new_object;
entry->offset = 0LL;

7
sys/vm/vm_page.c
View File

@ -1472,12 +1472,13 @@ vm_page_grab(vm_object_t object, vm_pindex_t pindex, int allocflags)
return (NULL);
goto retrylookup;
} else {
vm_page_lock_queues();
if (allocflags & VM_ALLOC_WIRED)
if ((allocflags & VM_ALLOC_WIRED) != 0) {
vm_page_lock_queues();
vm_page_wire(m);
vm_page_unlock_queues();
}
if ((allocflags & VM_ALLOC_NOBUSY) == 0)
vm_page_busy(m);
vm_page_unlock_queues();
return (m);
}
}