4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/linux/linux-obdo.c
38 * Object Devices Class Driver
39 * These are the only exported functions, they provide some generic
40 * infrastructure for managing object devices
43 #define DEBUG_SUBSYSTEM S_CLASS
45 #include <linux/module.h>
46 #include "../../include/obd_class.h"
47 #include "../../include/lustre/lustre_idl.h"
50 #include <linux/pagemap.h> /* for PAGE_CACHE_SIZE */
52 void obdo_refresh_inode(struct inode
*dst
, struct obdo
*src
, u32 valid
)
54 valid
&= src
->o_valid
;
56 if (valid
& (OBD_MD_FLCTIME
| OBD_MD_FLMTIME
))
58 "valid %#llx, cur time %lu/%lu, new %llu/%llu\n",
59 src
->o_valid
, LTIME_S(dst
->i_mtime
),
60 LTIME_S(dst
->i_ctime
), src
->o_mtime
, src
->o_ctime
);
62 if (valid
& OBD_MD_FLATIME
&& src
->o_atime
> LTIME_S(dst
->i_atime
))
63 LTIME_S(dst
->i_atime
) = src
->o_atime
;
64 if (valid
& OBD_MD_FLMTIME
&& src
->o_mtime
> LTIME_S(dst
->i_mtime
))
65 LTIME_S(dst
->i_mtime
) = src
->o_mtime
;
66 if (valid
& OBD_MD_FLCTIME
&& src
->o_ctime
> LTIME_S(dst
->i_ctime
))
67 LTIME_S(dst
->i_ctime
) = src
->o_ctime
;
68 if (valid
& OBD_MD_FLSIZE
)
69 i_size_write(dst
, src
->o_size
);
71 if (valid
& OBD_MD_FLBLKSZ
&& src
->o_blksize
> (1 << dst
->i_blkbits
))
72 dst
->i_blkbits
= ffs(src
->o_blksize
) - 1;
74 if (dst
->i_blkbits
< PAGE_CACHE_SHIFT
)
75 dst
->i_blkbits
= PAGE_CACHE_SHIFT
;
77 /* allocation of space */
78 if (valid
& OBD_MD_FLBLOCKS
&& src
->o_blocks
> dst
->i_blocks
)
80 * XXX shouldn't overflow be checked here like in
83 dst
->i_blocks
= src
->o_blocks
;
85 EXPORT_SYMBOL(obdo_refresh_inode
);
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