diff options
| author | John Baldwin <jhb@FreeBSD.org> | 2007-01-09 18:04:58 +0000 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2007-01-09 18:04:58 +0000 |
| commit | 87cfa2c01360f0fcfd7e8221281dfd64473797be (patch) | |
| tree | 3d00be6a6c084d38df2d5bc780f23ce01af50efc /sys/fs | |
| parent | 58bcc6f4adb69c231daf0aca9d80ae23c5243402 (diff) | |
Notes
Diffstat (limited to 'sys/fs')
| -rw-r--r-- | sys/fs/pseudofs/pseudofs_vncache.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sys/fs/pseudofs/pseudofs_vncache.c b/sys/fs/pseudofs/pseudofs_vncache.c index 4ce29af704d5..e6961bdb46cd 100644 --- a/sys/fs/pseudofs/pseudofs_vncache.c +++ b/sys/fs/pseudofs/pseudofs_vncache.c @@ -109,28 +109,29 @@ pfs_vncache_alloc(struct mount *mp, struct vnode **vpp, struct pfs_node *pn, pid_t pid) { struct pfs_vdata *pvd; + struct vnode *vp; int error; /* * See if the vnode is in the cache. * XXX linear search is not very efficient. */ +retry: mtx_lock(&pfs_vncache_mutex); for (pvd = pfs_vncache; pvd; pvd = pvd->pvd_next) { if (pvd->pvd_pn == pn && pvd->pvd_pid == pid && pvd->pvd_vnode->v_mount == mp) { - if (vget(pvd->pvd_vnode, 0, curthread) == 0) { + vp = pvd->pvd_vnode; + VI_LOCK(vp); + mtx_unlock(&pfs_vncache_mutex); + if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, curthread) == 0) { ++pfs_vncache_hits; - *vpp = pvd->pvd_vnode; - mtx_unlock(&pfs_vncache_mutex); + *vpp = vp; /* XXX see comment at top of pfs_lookup() */ - cache_purge(*vpp); - vn_lock(*vpp, LK_RETRY | LK_EXCLUSIVE, - curthread); + cache_purge(vp); return (0); } - /* XXX if this can happen, we're in trouble */ - break; + goto retry; } } mtx_unlock(&pfs_vncache_mutex); |
