diff options
Diffstat (limited to 'sys/vm/vm_object.c')
| -rw-r--r-- | sys/vm/vm_object.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c index dbcac85..1a3d398 100644 --- a/sys/vm/vm_object.c +++ b/sys/vm/vm_object.c @@ -852,6 +852,21 @@ rescan: flags, &clearobjflags); if (object->generation != curgeneration) goto rescan; + + /* + * If the VOP_PUTPAGES() did a truncated write, so + * that even the first page of the run is not fully + * written, vm_pageout_flush() returns 0 as the run + * length. Since the condition that caused truncated + * write may be permanent, e.g. exhausted free space, + * accepting n == 0 would cause an infinite loop. + * + * Forwarding the iterator leaves the unwritten page + * behind, but there is not much we can do there if + * filesystem refuses to write it. + */ + if (n == 0) + n = 1; np = vm_page_find_least(object, pi + n); } #if 0 |
