| 2202 | } |
| 2203 | |
| 2204 | static void |
| 2205 | cache_enter_lock_dd(struct celockstate *cel, struct vnode *dvp, struct vnode *vp, |
| 2206 | uint32_t hash) |
| 2207 | { |
| 2208 | struct namecache *ncp; |
| 2209 | struct mtx *blps[2]; |
| 2210 | u_char nc_flag; |
| 2211 | |
| 2212 | blps[0] = HASH2BUCKETLOCK(hash); |
| 2213 | for (;;) { |
| 2214 | blps[1] = NULL; |
| 2215 | cache_lock_vnodes_cel(cel, dvp, vp); |
| 2216 | ncp = atomic_load_consume_ptr(&dvp->v_cache_dd); |
| 2217 | if (ncp == NULL) |
| 2218 | break; |
| 2219 | nc_flag = atomic_load_char(&ncp->nc_flag); |
| 2220 | if ((nc_flag & NCF_ISDOTDOT) == 0) |
| 2221 | break; |
| 2222 | MPASS(ncp->nc_dvp == dvp); |
| 2223 | blps[1] = NCP2BUCKETLOCK(ncp); |
| 2224 | if ((nc_flag & NCF_NEGATIVE) != 0) |
| 2225 | break; |
| 2226 | if (cache_lock_vnodes_cel_3(cel, ncp->nc_vp)) |
| 2227 | break; |
| 2228 | if (ncp == dvp->v_cache_dd && |
| 2229 | (ncp->nc_flag & NCF_ISDOTDOT) != 0 && |
| 2230 | blps[1] == NCP2BUCKETLOCK(ncp) && |
| 2231 | VP2VNODELOCK(ncp->nc_vp) == cel->vlp[2]) |
| 2232 | break; |
| 2233 | cache_unlock_vnodes_cel(cel); |
| 2234 | cel->vlp[0] = NULL; |
| 2235 | cel->vlp[1] = NULL; |
| 2236 | cel->vlp[2] = NULL; |
| 2237 | } |
| 2238 | cache_lock_buckets_cel(cel, blps[0], blps[1]); |
| 2239 | } |
| 2240 | |
| 2241 | static void |
| 2242 | cache_enter_unlock(struct celockstate *cel) |
no test coverage detected