diff options
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/vfs_subr.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 9fe4d43..87328c1 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -152,6 +152,10 @@ SYSCTL_LONG(_vfs, OID_AUTO, wantfreevnodes, CTLFLAG_RW, &wantfreevnodes, 0, ""); static u_long freevnodes; SYSCTL_LONG(_vfs, OID_AUTO, freevnodes, CTLFLAG_RD, &freevnodes, 0, ""); +static int vlru_allow_cache_src; +SYSCTL_INT(_vfs, OID_AUTO, vlru_allow_cache_src, CTLFLAG_RW, + &vlru_allow_cache_src, 0, "Allow vlru to reclaim source vnode"); + /* * Various variables used for debugging the new implementation of * reassignbuf(). @@ -643,7 +647,9 @@ vlrureclaim(struct mount *mp) * If it's been deconstructed already, it's still * referenced, or it exceeds the trigger, skip it. */ - if (vp->v_usecount || !LIST_EMPTY(&(vp)->v_cache_src) || + if (vp->v_usecount || + (!vlru_allow_cache_src && + !LIST_EMPTY(&(vp)->v_cache_src)) || (vp->v_iflag & VI_DOOMED) != 0 || (vp->v_object != NULL && vp->v_object->resident_page_count > trigger)) { VI_UNLOCK(vp); @@ -668,7 +674,9 @@ vlrureclaim(struct mount *mp) * interlock, the other thread will be unable to drop the * vnode lock before our VOP_LOCK() call fails. */ - if (vp->v_usecount || !LIST_EMPTY(&(vp)->v_cache_src) || + if (vp->v_usecount || + (!vlru_allow_cache_src && + !LIST_EMPTY(&(vp)->v_cache_src)) || (vp->v_object != NULL && vp->v_object->resident_page_count > trigger)) { VOP_UNLOCK(vp, LK_INTERLOCK); |
