projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 50 | #include <linux/pagemap.h> /* for PAGE_CACHE_SIZE */ | |
| 51 | ||
| 21aef7d9 | 52 | void obdo_refresh_inode(struct inode *dst, struct obdo *src, u32 valid) |
| d7e09d03 PT |
53 | { |
| 54 | valid &= src->o_valid; | |
| 55 | ||
| 56 | if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME)) | |
| 57 | CDEBUG(D_INODE, | |
| 55f5a824 | 58 | "valid %#llx, cur time %lu/%lu, new %llu/%llu\n", |
| d7e09d03 PT |
59 | src->o_valid, LTIME_S(dst->i_mtime), |
| 60 | LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime); | |
| 61 | ||
| 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); | |
| 70 | /* optimum IO size */ | |
| 71 | if (valid & OBD_MD_FLBLKSZ && src->o_blksize > (1 << dst->i_blkbits)) | |
| 72 | dst->i_blkbits = ffs(src->o_blksize) - 1; | |
| 73 | ||
| 09cbfeaf KS |
74 | if (dst->i_blkbits < PAGE_SHIFT) |
| 75 | dst->i_blkbits = PAGE_SHIFT; | |
| d7e09d03 PT |
76 | |
| 77 | /* allocation of space */ | |
| 78 | if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks) | |
| 79 | /* | |
| 80 | * XXX shouldn't overflow be checked here like in | |
| 81 | * obdo_to_inode(). | |
| 82 | */ | |
| 83 | dst->i_blocks = src->o_blocks; | |
| 84 | } | |
| 85 | EXPORT_SYMBOL(obdo_refresh_inode); |