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805e021f CE |
1 | /* |
2 | * Copyright 2000, International Business Machines Corporation and others. | |
3 | * All Rights Reserved. | |
4 | * | |
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 | |
8 | */ | |
9 | ||
10 | #include <afsconfig.h> | |
11 | #include "afs/param.h" | |
12 | ||
13 | #include "afs/sysincludes.h" /*Standard vendor system headers */ | |
14 | #include "afsincludes.h" /*AFS-based standard headers */ | |
15 | ||
16 | int | |
17 | osi_TryEvictVCache(struct vcache *avc, int *slept, int defersleep) { | |
18 | *slept = 0; | |
19 | ||
20 | if (!VREFCOUNT_GT(avc,0) | |
21 | && avc->opens == 0 && (avc->f.states & CUnlinkedDel) == 0) { | |
22 | /* | |
23 | * vgone() reclaims the vnode, which calls afs_FlushVCache(), | |
24 | * then it puts the vnode on the free list. | |
25 | * If we don't do this we end up with a cleaned vnode that's | |
26 | * not on the free list. | |
27 | */ | |
28 | AFS_GUNLOCK(); | |
29 | vgone(AFSTOV(avc)); | |
30 | AFS_GLOCK(); | |
31 | return 1; | |
32 | } | |
33 | return 0; | |
34 | } | |
35 | ||
36 | struct vcache * | |
37 | osi_NewVnode(void) { | |
38 | struct vcache *tvc; | |
39 | ||
40 | tvc = afs_osi_Alloc(sizeof(struct vcache)); | |
41 | tvc->v = NULL; /* important to clean this, or use memset 0 */ | |
42 | ||
43 | return tvc; | |
44 | } | |
45 | ||
46 | void | |
47 | osi_PrePopulateVCache(struct vcache *avc) { | |
48 | memset(avc, 0, sizeof(struct vcache)); | |
49 | } | |
50 | ||
51 | void | |
52 | osi_AttachVnode(struct vcache *avc, int seq) { | |
53 | ReleaseWriteLock(&afs_xvcache); | |
54 | AFS_GUNLOCK(); | |
55 | afs_obsd_getnewvnode(avc); /* includes one refcount */ | |
56 | AFS_GLOCK(); | |
57 | ObtainWriteLock(&afs_xvcache,337); | |
58 | lockinit(&avc->rwlock, PINOD, "vcache", 0, 0); | |
59 | } | |
60 | ||
61 | void | |
62 | osi_PostPopulateVCache(struct vcache *avc) { | |
63 | AFSTOV(avc)->v_mount = afs_globalVFS; | |
64 | vSetType(avc, VREG); | |
65 | } | |
66 |