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1275101026
For small file sizes, it make sense to issue a synchronous copy (and save an RPC callback operation). Also, for the inter copy offload, copy len must be larger than the cost of doing a mount between the destination and source server (14RPCs are sent during 4.x mount). Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
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*/
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#ifndef __LINUX_FS_NFS_NFS4_2_H
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#define __LINUX_FS_NFS_NFS4_2_H
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/*
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* FIXME: four LAYOUTSTATS calls per compound at most! Do we need to support
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* more? Need to consider not to pre-alloc too much for a compound.
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*/
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#define PNFS_LAYOUTSTATS_MAXDEV (4)
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/* nfs4.2proc.c */
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#ifdef CONFIG_NFS_V4_2
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int nfs42_proc_allocate(struct file *, loff_t, loff_t);
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ssize_t nfs42_proc_copy(struct file *, loff_t, struct file *, loff_t, size_t,
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struct nl4_server *, nfs4_stateid *, bool);
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int nfs42_proc_deallocate(struct file *, loff_t, loff_t);
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loff_t nfs42_proc_llseek(struct file *, loff_t, int);
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int nfs42_proc_layoutstats_generic(struct nfs_server *,
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struct nfs42_layoutstat_data *);
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int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t);
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int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
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const struct nfs42_layout_error *errors,
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size_t n);
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int nfs42_proc_copy_notify(struct file *, struct file *,
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struct nfs42_copy_notify_res *);
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static inline bool nfs42_files_from_same_server(struct file *in,
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struct file *out)
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{
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struct nfs_client *c_in = (NFS_SERVER(file_inode(in)))->nfs_client;
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struct nfs_client *c_out = (NFS_SERVER(file_inode(out)))->nfs_client;
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return nfs4_check_serverowner_major_id(c_in->cl_serverowner,
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c_out->cl_serverowner);
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}
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#endif /* CONFIG_NFS_V4_2 */
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#endif /* __LINUX_FS_NFS_NFS4_2_H */
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