Push the file layout driver into a subdirectory
The object and block layouts already exist in their own
subdirectories. This patch completes the set!
Note that as a layout denotes nfs4 already, I stripped
that prefix out of the file names.
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
Acked-by: Jeff Layton <jlayton@poochiereds.net>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/filelayout/filelayout.h b/fs/nfs/filelayout/filelayout.h
new file mode 100644
index 0000000..ffbddf2
--- /dev/null
+++ b/fs/nfs/filelayout/filelayout.h
@@ -0,0 +1,156 @@
+/*
+ * NFSv4 file layout driver data structures.
+ *
+ * Copyright (c) 2002
+ * The Regents of the University of Michigan
+ * All Rights Reserved
+ *
+ * Dean Hildebrand <dhildebz@umich.edu>
+ *
+ * Permission is granted to use, copy, create derivative works, and
+ * redistribute this software and such derivative works for any purpose,
+ * so long as the name of the University of Michigan is not used in
+ * any advertising or publicity pertaining to the use or distribution
+ * of this software without specific, written prior authorization. If
+ * the above copyright notice or any other identification of the
+ * University of Michigan is included in any copy of any portion of
+ * this software, then the disclaimer below must also be included.
+ *
+ * This software is provided as is, without representation or warranty
+ * of any kind either express or implied, including without limitation
+ * the implied warranties of merchantability, fitness for a particular
+ * purpose, or noninfringement. The Regents of the University of
+ * Michigan shall not be liable for any damages, including special,
+ * indirect, incidental, or consequential damages, with respect to any
+ * claim arising out of or in connection with the use of the software,
+ * even if it has been or is hereafter advised of the possibility of
+ * such damages.
+ */
+
+#ifndef FS_NFS_NFS4FILELAYOUT_H
+#define FS_NFS_NFS4FILELAYOUT_H
+
+#include "../pnfs.h"
+
+/*
+ * Default data server connection timeout and retrans vaules.
+ * Set by module paramters dataserver_timeo and dataserver_retrans.
+ */
+#define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */
+#define NFS4_DEF_DS_RETRANS 5
+
+/*
+ * Field testing shows we need to support up to 4096 stripe indices.
+ * We store each index as a u8 (u32 on the wire) to keep the memory footprint
+ * reasonable. This in turn means we support a maximum of 256
+ * RFC 5661 multipath_list4 structures.
+ */
+#define NFS4_PNFS_MAX_STRIPE_CNT 4096
+#define NFS4_PNFS_MAX_MULTI_CNT 256 /* 256 fit into a u8 stripe_index */
+
+/* error codes for internal use */
+#define NFS4ERR_RESET_TO_MDS 12001
+
+enum stripetype4 {
+ STRIPE_SPARSE = 1,
+ STRIPE_DENSE = 2
+};
+
+/* Individual ip address */
+struct nfs4_pnfs_ds_addr {
+ struct sockaddr_storage da_addr;
+ size_t da_addrlen;
+ struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */
+ char *da_remotestr; /* human readable addr+port */
+};
+
+struct nfs4_pnfs_ds {
+ struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */
+ char *ds_remotestr; /* comma sep list of addrs */
+ struct list_head ds_addrs;
+ struct nfs_client *ds_clp;
+ atomic_t ds_count;
+ unsigned long ds_state;
+#define NFS4DS_CONNECTING 0 /* ds is establishing connection */
+};
+
+struct nfs4_file_layout_dsaddr {
+ struct nfs4_deviceid_node id_node;
+ u32 stripe_count;
+ u8 *stripe_indices;
+ u32 ds_num;
+ struct nfs4_pnfs_ds *ds_list[1];
+};
+
+struct nfs4_filelayout_segment {
+ struct pnfs_layout_segment generic_hdr;
+ u32 stripe_type;
+ u32 commit_through_mds;
+ u32 stripe_unit;
+ u32 first_stripe_index;
+ u64 pattern_offset;
+ struct nfs4_file_layout_dsaddr *dsaddr; /* Point to GETDEVINFO data */
+ unsigned int num_fh;
+ struct nfs_fh **fh_array;
+};
+
+struct nfs4_filelayout {
+ struct pnfs_layout_hdr generic_hdr;
+ struct pnfs_ds_commit_info commit_info;
+};
+
+static inline struct nfs4_filelayout *
+FILELAYOUT_FROM_HDR(struct pnfs_layout_hdr *lo)
+{
+ return container_of(lo, struct nfs4_filelayout, generic_hdr);
+}
+
+static inline struct nfs4_filelayout_segment *
+FILELAYOUT_LSEG(struct pnfs_layout_segment *lseg)
+{
+ return container_of(lseg,
+ struct nfs4_filelayout_segment,
+ generic_hdr);
+}
+
+static inline struct nfs4_deviceid_node *
+FILELAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg)
+{
+ return &FILELAYOUT_LSEG(lseg)->dsaddr->id_node;
+}
+
+static inline void
+filelayout_mark_devid_invalid(struct nfs4_deviceid_node *node)
+{
+ u32 *p = (u32 *)&node->deviceid;
+
+ printk(KERN_WARNING "NFS: Deviceid [%x%x%x%x] marked out of use.\n",
+ p[0], p[1], p[2], p[3]);
+
+ set_bit(NFS_DEVICEID_INVALID, &node->flags);
+}
+
+static inline bool
+filelayout_test_devid_invalid(struct nfs4_deviceid_node *node)
+{
+ return test_bit(NFS_DEVICEID_INVALID, &node->flags);
+}
+
+extern bool
+filelayout_test_devid_unavailable(struct nfs4_deviceid_node *node);
+
+extern struct nfs_fh *
+nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg, u32 j);
+
+extern void print_ds(struct nfs4_pnfs_ds *ds);
+u32 nfs4_fl_calc_j_index(struct pnfs_layout_segment *lseg, loff_t offset);
+u32 nfs4_fl_calc_ds_index(struct pnfs_layout_segment *lseg, u32 j);
+struct nfs4_pnfs_ds *nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg,
+ u32 ds_idx);
+extern void nfs4_fl_put_deviceid(struct nfs4_file_layout_dsaddr *dsaddr);
+extern void nfs4_fl_free_deviceid(struct nfs4_file_layout_dsaddr *dsaddr);
+struct nfs4_file_layout_dsaddr *
+filelayout_get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id,
+ struct rpc_cred *cred, gfp_t gfp_flags);
+
+#endif /* FS_NFS_NFS4FILELAYOUT_H */
