projects / deliverable / linux.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) 2013, 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 | ||
| 37 | #define DEBUG_SUBSYSTEM S_LMV | |
| 38 | #include <linux/slab.h> | |
| 39 | #include <linux/module.h> | |
| 40 | #include <linux/init.h> | |
| d7e09d03 PT |
41 | #include <linux/pagemap.h> |
| 42 | #include <asm/div64.h> | |
| 43 | #include <linux/seq_file.h> | |
| 44 | ||
| 45 | #include <obd_support.h> | |
| 46 | #include <lustre/lustre_idl.h> | |
| 47 | #include <lustre_fid.h> | |
| 48 | #include <lustre_lib.h> | |
| 49 | #include <lustre_net.h> | |
| 50 | #include <lustre_dlm.h> | |
| 51 | #include <obd_class.h> | |
| 52 | #include <lprocfs_status.h> | |
| 53 | #include "lmv_internal.h" | |
| 54 | ||
| 55 | int lmv_fld_lookup(struct lmv_obd *lmv, | |
| 56 | const struct lu_fid *fid, | |
| 57 | mdsno_t *mds) | |
| 58 | { | |
| 59 | int rc; | |
| d7e09d03 PT |
60 | |
| 61 | /* FIXME: Currently ZFS still use local seq for ROOT unfortunately, and | |
| 62 | * this fid_is_local check should be removed once LU-2240 is fixed */ | |
| 63 | LASSERTF((fid_seq_in_fldb(fid_seq(fid)) || | |
| 64 | fid_seq_is_local_file(fid_seq(fid))) && | |
| 65 | fid_is_sane(fid), DFID" is insane!\n", PFID(fid)); | |
| 66 | ||
| 67 | rc = fld_client_lookup(&lmv->lmv_fld, fid_seq(fid), mds, | |
| 68 | LU_SEQ_RANGE_MDT, NULL); | |
| 69 | if (rc) { | |
| 70 | CERROR("Error while looking for mds number. Seq "LPX64 | |
| 71 | ", err = %d\n", fid_seq(fid), rc); | |
| 0a3bdb00 | 72 | return rc; |
| d7e09d03 PT |
73 | } |
| 74 | ||
| 75 | CDEBUG(D_INODE, "FLD lookup got mds #%x for fid="DFID"\n", | |
| 76 | *mds, PFID(fid)); | |
| 77 | ||
| 78 | if (*mds >= lmv->desc.ld_tgt_count) { | |
| 79 | CERROR("FLD lookup got invalid mds #%x (max: %x) " | |
| 80 | "for fid="DFID"\n", *mds, lmv->desc.ld_tgt_count, | |
| 81 | PFID(fid)); | |
| 82 | rc = -EINVAL; | |
| 83 | } | |
| 0a3bdb00 | 84 | return rc; |
| d7e09d03 | 85 | } |