diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/lmv/lmv_fld.c')
-rw-r--r-- | drivers/staging/lustre/lustre/lmv/lmv_fld.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/lmv/lmv_fld.c b/drivers/staging/lustre/lustre/lmv/lmv_fld.c new file mode 100644 index 0000000..a4805ae --- /dev/null +++ b/drivers/staging/lustre/lustre/lmv/lmv_fld.c @@ -0,0 +1,88 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2013, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + */ + +#define DEBUG_SUBSYSTEM S_LMV +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/pagemap.h> +#include <asm/div64.h> +#include <linux/seq_file.h> + +#include <obd_support.h> +#include <lustre/lustre_idl.h> +#include <lustre_fid.h> +#include <lustre_lib.h> +#include <lustre_net.h> +#include <lustre_dlm.h> +#include <obd_class.h> +#include <lprocfs_status.h> +#include "lmv_internal.h" + +int lmv_fld_lookup(struct lmv_obd *lmv, + const struct lu_fid *fid, + mdsno_t *mds) +{ + int rc; + ENTRY; + + + /* FIXME: Currently ZFS still use local seq for ROOT unfortunately, and + * this fid_is_local check should be removed once LU-2240 is fixed */ + LASSERTF((fid_seq_in_fldb(fid_seq(fid)) || + fid_seq_is_local_file(fid_seq(fid))) && + fid_is_sane(fid), DFID" is insane!\n", PFID(fid)); + + rc = fld_client_lookup(&lmv->lmv_fld, fid_seq(fid), mds, + LU_SEQ_RANGE_MDT, NULL); + if (rc) { + CERROR("Error while looking for mds number. Seq "LPX64 + ", err = %d\n", fid_seq(fid), rc); + RETURN(rc); + } + + CDEBUG(D_INODE, "FLD lookup got mds #%x for fid="DFID"\n", + *mds, PFID(fid)); + + if (*mds >= lmv->desc.ld_tgt_count) { + CERROR("FLD lookup got invalid mds #%x (max: %x) " + "for fid="DFID"\n", *mds, lmv->desc.ld_tgt_count, + PFID(fid)); + rc = -EINVAL; + } + RETURN(rc); +} |