2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include "afs/param.h"
13 #include "afs/sysincludes.h" /*Standard vendor system headers */
14 #include "afsincludes.h" /*AFS-based standard headers */
17 osi_TryEvictVCache(struct vcache *avc, int *slept, int defersleep)
20 /* we can't control whether we sleep */
21 if (!VREFCOUNT_GT(avc,0)
22 && avc->opens == 0 && (avc->f.states & CUnlinkedDel) == 0) {
23 code = afs_FlushVCache(avc, slept);
30 extern char *makesname();
36 char name[METER_NAMSZ];
38 avc = afs_osi_Alloc(sizeof(struct vcache));
43 memset(avc, 0, sizeof(struct vcache));
44 avc->v.v_number = ++afsvnumbers;
45 avc->vc_rwlockid = OSI_NO_LOCKID;
46 initnsema(&avc->vc_rwlock, 1,
47 makesname(name, "vrw", avc->v.v_number));
52 osi_PrePopulateVCache(struct vcache *avc)
55 memset(&(avc->f), 0, sizeof(struct fvcache));
59 osi_AttachVnode(struct vcache *avc, int seq)
64 osi_PostPopulateVCache(struct vcache *avc)
66 memset(&(avc->vc_bhv_desc), 0, sizeof(avc->vc_bhv_desc));
67 bhv_desc_init(&(avc->vc_bhv_desc), avc, avc, &Afs_vnodeops);
69 vn_bhv_head_init(&(avc->v.v_bh), "afsvp");
70 vn_bhv_insert_initial(&(avc->v.v_bh), &(avc->vc_bhv_desc));
71 avc->v.v_mreg = avc->v.v_mregb = (struct pregion *)avc;
72 # if defined(VNODE_TRACING)
73 avc->v.v_trace = ktrace_alloc(VNODE_TRACE_SIZE, 0);
75 init_bitlock(&avc->v.v_pcacheflag, VNODE_PCACHE_LOCKBIT, "afs_pcache",
77 init_mutex(&avc->v.v_filocksem, MUTEX_DEFAULT, "afsvfl", (long)avc);
78 init_mutex(&avc->v.v_buf_lock, MUTEX_DEFAULT, "afsvnbuf", (long)avc);
80 vnode_pcache_init(&avc->v);
82 #if defined(DEBUG) && defined(VNODE_INIT_BITLOCK)
83 /* Above define is never true execpt in SGI test kernels. */
84 init_bitlock(&avc->v.v_flag, VLOCK, "vnode", avc->v.v_number);
88 AFS_VN_INIT_BUF_LOCK(&(avc->v));
91 vSetVfsp(avc, afs_globalVFS);
94 VN_SET_DPAGES(&(avc->v), NULL);
95 osi_Assert((avc->v.v_flag & VINACT) == 0);
97 osi_Assert(VN_GET_PGCNT(&(avc->v)) == 0);
98 osi_Assert(avc->mapcnt == 0 && avc->vc_locktrips == 0);
99 osi_Assert(avc->vc_rwlockid == OSI_NO_LOCKID);
100 osi_Assert(avc->v.v_filocks == NULL);
101 osi_Assert(avc->cred == NULL);
102 vnode_pcache_reinit(&avc->v);
103 avc->v.v_rdev = NODEV;
104 vn_initlist((struct vnlist *)&avc->v);
109 osi_vnhold(struct vcache *avc)
111 VN_HOLD(AFSTOV(avc));