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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | * | |
36 | * lustre/obdclass/linux/linux-obdo.c | |
37 | * | |
38 | * Object Devices Class Driver | |
39 | * These are the only exported functions, they provide some generic | |
40 | * infrastructure for managing object devices | |
41 | */ | |
42 | ||
43 | #define DEBUG_SUBSYSTEM S_CLASS | |
44 | ||
45 | #include <linux/module.h> | |
610f7377 GKH |
46 | #include "../../include/obd_class.h" |
47 | #include "../../include/lustre/lustre_idl.h" | |
d7e09d03 PT |
48 | |
49 | #include <linux/fs.h> | |
d7e09d03 | 50 | |
21aef7d9 | 51 | void obdo_refresh_inode(struct inode *dst, struct obdo *src, u32 valid) |
d7e09d03 PT |
52 | { |
53 | valid &= src->o_valid; | |
54 | ||
55 | if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME)) | |
56 | CDEBUG(D_INODE, | |
55f5a824 | 57 | "valid %#llx, cur time %lu/%lu, new %llu/%llu\n", |
d7e09d03 PT |
58 | src->o_valid, LTIME_S(dst->i_mtime), |
59 | LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime); | |
60 | ||
61 | if (valid & OBD_MD_FLATIME && src->o_atime > LTIME_S(dst->i_atime)) | |
62 | LTIME_S(dst->i_atime) = src->o_atime; | |
63 | if (valid & OBD_MD_FLMTIME && src->o_mtime > LTIME_S(dst->i_mtime)) | |
64 | LTIME_S(dst->i_mtime) = src->o_mtime; | |
65 | if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime)) | |
66 | LTIME_S(dst->i_ctime) = src->o_ctime; | |
67 | if (valid & OBD_MD_FLSIZE) | |
68 | i_size_write(dst, src->o_size); | |
69 | /* optimum IO size */ | |
70 | if (valid & OBD_MD_FLBLKSZ && src->o_blksize > (1 << dst->i_blkbits)) | |
71 | dst->i_blkbits = ffs(src->o_blksize) - 1; | |
72 | ||
09cbfeaf KS |
73 | if (dst->i_blkbits < PAGE_SHIFT) |
74 | dst->i_blkbits = PAGE_SHIFT; | |
d7e09d03 PT |
75 | |
76 | /* allocation of space */ | |
77 | if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks) | |
78 | /* | |
79 | * XXX shouldn't overflow be checked here like in | |
80 | * obdo_to_inode(). | |
81 | */ | |
82 | dst->i_blocks = src->o_blocks; | |
83 | } | |
84 | EXPORT_SYMBOL(obdo_refresh_inode); |