<dec f='src/src/sys/sys/buf.h' l='319' type='int buf_drain(int )'/>
<use f='src/src/sys/kern/vfs_bio.c' l='636' u='c' c='buf_alloc'/>
<def f='src/src/sys/kern/vfs_bio.c' l='1470' ll='1485' type='int buf_drain(int n)'/>
<use f='src/src/sys/kern/vfs_bio.c' l='1815' u='c' c='sysctl_bufvm_update'/>
<use f='src/src/sys/uvm/uvm_pdaemon.c' l='337' u='c' c='uvm_pageout'/>
