933 lines
28 KiB
C
933 lines
28 KiB
C
/*
|
|
* pNFS client 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_PNFS_H
|
|
#define FS_NFS_PNFS_H
|
|
|
|
#include <linux/refcount.h>
|
|
#include <linux/nfs_fs.h>
|
|
#include <linux/nfs_page.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
struct nfs4_opendata;
|
|
|
|
enum {
|
|
NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */
|
|
NFS_LSEG_ROC, /* roc bit received from server */
|
|
NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */
|
|
NFS_LSEG_LAYOUTRETURN, /* layoutreturn bit set for layoutreturn */
|
|
NFS_LSEG_UNAVAILABLE, /* unavailable bit set for temporary problem */
|
|
};
|
|
|
|
/* 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 */
|
|
const char *da_netid;
|
|
int da_transport;
|
|
};
|
|
|
|
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;
|
|
refcount_t ds_count;
|
|
unsigned long ds_state;
|
|
#define NFS4DS_CONNECTING 0 /* ds is establishing connection */
|
|
};
|
|
|
|
struct pnfs_layout_segment {
|
|
struct list_head pls_list;
|
|
struct list_head pls_lc_list;
|
|
struct list_head pls_commits;
|
|
struct pnfs_layout_range pls_range;
|
|
refcount_t pls_refcount;
|
|
u32 pls_seq;
|
|
unsigned long pls_flags;
|
|
struct pnfs_layout_hdr *pls_layout;
|
|
};
|
|
|
|
enum pnfs_try_status {
|
|
PNFS_ATTEMPTED = 0,
|
|
PNFS_NOT_ATTEMPTED = 1,
|
|
PNFS_TRY_AGAIN = 2,
|
|
};
|
|
|
|
#ifdef CONFIG_NFS_V4_1
|
|
|
|
#define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4"
|
|
|
|
/*
|
|
* Default data server connection timeout and retrans vaules.
|
|
* Set by module parameters dataserver_timeo and dataserver_retrans.
|
|
*/
|
|
#define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */
|
|
#define NFS4_DEF_DS_RETRANS 5
|
|
#define PNFS_DEVICE_RETRY_TIMEOUT (120*HZ)
|
|
|
|
enum {
|
|
NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */
|
|
NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */
|
|
NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */
|
|
NFS_LAYOUT_RETURN, /* layoutreturn in progress */
|
|
NFS_LAYOUT_RETURN_LOCK, /* Serialise layoutreturn */
|
|
NFS_LAYOUT_RETURN_REQUESTED, /* Return this layout ASAP */
|
|
NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */
|
|
NFS_LAYOUT_FIRST_LAYOUTGET, /* Serialize first layoutget */
|
|
NFS_LAYOUT_INODE_FREEING, /* The inode is being freed */
|
|
NFS_LAYOUT_HASHED, /* The layout visible */
|
|
NFS_LAYOUT_DRAIN,
|
|
};
|
|
|
|
enum layoutdriver_policy_flags {
|
|
/* Should the pNFS client commit and return the layout upon truncate to
|
|
* a smaller size */
|
|
PNFS_LAYOUTRET_ON_SETATTR = 1 << 0,
|
|
PNFS_LAYOUTRET_ON_ERROR = 1 << 1,
|
|
PNFS_READ_WHOLE_PAGE = 1 << 2,
|
|
PNFS_LAYOUTGET_ON_OPEN = 1 << 3,
|
|
};
|
|
|
|
struct nfs4_deviceid_node;
|
|
|
|
/* Per-layout driver specific registration structure */
|
|
struct pnfs_layoutdriver_type {
|
|
struct list_head pnfs_tblid;
|
|
const u32 id;
|
|
const char *name;
|
|
struct module *owner;
|
|
unsigned flags;
|
|
unsigned max_deviceinfo_size;
|
|
unsigned max_layoutget_response;
|
|
|
|
int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *);
|
|
int (*clear_layoutdriver) (struct nfs_server *);
|
|
|
|
struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags);
|
|
void (*free_layout_hdr) (struct pnfs_layout_hdr *);
|
|
|
|
struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags);
|
|
void (*free_lseg) (struct pnfs_layout_segment *lseg);
|
|
void (*add_lseg) (struct pnfs_layout_hdr *layoutid,
|
|
struct pnfs_layout_segment *lseg,
|
|
struct list_head *free_me);
|
|
|
|
void (*return_range) (struct pnfs_layout_hdr *lo,
|
|
struct pnfs_layout_range *range);
|
|
|
|
/* test for nfs page cache coalescing */
|
|
const struct nfs_pageio_ops *pg_read_ops;
|
|
const struct nfs_pageio_ops *pg_write_ops;
|
|
|
|
struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode);
|
|
|
|
int (*sync)(struct inode *inode, bool datasync);
|
|
|
|
/*
|
|
* Return PNFS_ATTEMPTED to indicate the layout code has attempted
|
|
* I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS
|
|
*/
|
|
enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *);
|
|
enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int);
|
|
|
|
void (*free_deviceid_node) (struct nfs4_deviceid_node *);
|
|
struct nfs4_deviceid_node * (*alloc_deviceid_node)
|
|
(struct nfs_server *server, struct pnfs_device *pdev,
|
|
gfp_t gfp_flags);
|
|
|
|
int (*prepare_layoutreturn) (struct nfs4_layoutreturn_args *);
|
|
|
|
void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data);
|
|
int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args);
|
|
int (*prepare_layoutstats) (struct nfs42_layoutstat_args *args);
|
|
|
|
void (*cancel_io)(struct pnfs_layout_segment *lseg);
|
|
};
|
|
|
|
struct pnfs_commit_ops {
|
|
void (*setup_ds_info)(struct pnfs_ds_commit_info *,
|
|
struct pnfs_layout_segment *);
|
|
void (*release_ds_info)(struct pnfs_ds_commit_info *,
|
|
struct inode *inode);
|
|
int (*commit_pagelist)(struct inode *inode,
|
|
struct list_head *mds_pages,
|
|
int how,
|
|
struct nfs_commit_info *cinfo);
|
|
void (*mark_request_commit) (struct nfs_page *req,
|
|
struct pnfs_layout_segment *lseg,
|
|
struct nfs_commit_info *cinfo,
|
|
u32 ds_commit_idx);
|
|
void (*clear_request_commit) (struct nfs_page *req,
|
|
struct nfs_commit_info *cinfo);
|
|
int (*scan_commit_lists) (struct nfs_commit_info *cinfo,
|
|
int max);
|
|
void (*recover_commit_reqs) (struct list_head *list,
|
|
struct nfs_commit_info *cinfo);
|
|
struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo,
|
|
struct folio *folio);
|
|
};
|
|
|
|
struct pnfs_layout_hdr {
|
|
refcount_t plh_refcount;
|
|
atomic_t plh_outstanding; /* number of RPCs out */
|
|
struct list_head plh_layouts; /* other client layouts */
|
|
struct list_head plh_bulk_destroy;
|
|
struct list_head plh_segs; /* layout segments list */
|
|
struct list_head plh_return_segs; /* invalid layout segments */
|
|
unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */
|
|
unsigned long plh_retry_timestamp;
|
|
unsigned long plh_flags;
|
|
nfs4_stateid plh_stateid;
|
|
u32 plh_barrier; /* ignore lower seqids */
|
|
u32 plh_return_seq;
|
|
enum pnfs_iomode plh_return_iomode;
|
|
loff_t plh_lwb; /* last write byte for layoutcommit */
|
|
const struct cred *plh_lc_cred; /* layoutcommit cred */
|
|
struct inode *plh_inode;
|
|
struct rcu_head plh_rcu;
|
|
};
|
|
|
|
struct pnfs_device {
|
|
struct nfs4_deviceid dev_id;
|
|
unsigned int layout_type;
|
|
unsigned int mincount;
|
|
unsigned int maxcount; /* gdia_maxcount */
|
|
struct page **pages;
|
|
unsigned int pgbase;
|
|
unsigned int pglen; /* reply buffer length */
|
|
unsigned char nocache : 1;/* May not be cached */
|
|
};
|
|
|
|
#define NFS4_PNFS_GETDEVLIST_MAXNUM 16
|
|
|
|
struct pnfs_devicelist {
|
|
unsigned int eof;
|
|
unsigned int num_devs;
|
|
struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM];
|
|
};
|
|
|
|
extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *);
|
|
extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *);
|
|
extern const struct pnfs_layoutdriver_type *pnfs_find_layoutdriver(u32 id);
|
|
extern void pnfs_put_layoutdriver(const struct pnfs_layoutdriver_type *ld);
|
|
|
|
/* nfs4proc.c */
|
|
extern size_t max_response_pages(struct nfs_server *server);
|
|
extern int nfs4_proc_getdeviceinfo(struct nfs_server *server,
|
|
struct pnfs_device *dev,
|
|
const struct cred *cred);
|
|
extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout);
|
|
extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync);
|
|
|
|
/* pnfs.c */
|
|
void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo);
|
|
void pnfs_put_lseg(struct pnfs_layout_segment *lseg);
|
|
|
|
void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *);
|
|
void unset_pnfs_layoutdriver(struct nfs_server *);
|
|
void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio);
|
|
void pnfs_generic_pg_check_range(struct nfs_pageio_descriptor *pgio, struct nfs_page *req);
|
|
void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *);
|
|
int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
|
|
void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
|
|
struct nfs_page *req, u64 wb_size);
|
|
void pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *);
|
|
int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc);
|
|
size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio,
|
|
struct nfs_page *prev, struct nfs_page *req);
|
|
void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg);
|
|
struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp);
|
|
void pnfs_layoutget_free(struct nfs4_layoutget *lgp);
|
|
void pnfs_free_lseg_list(struct list_head *tmp_list);
|
|
void pnfs_destroy_layout(struct nfs_inode *);
|
|
void pnfs_destroy_layout_final(struct nfs_inode *);
|
|
void pnfs_destroy_all_layouts(struct nfs_client *);
|
|
int pnfs_destroy_layouts_byfsid(struct nfs_client *clp,
|
|
struct nfs_fsid *fsid,
|
|
bool is_recall);
|
|
int pnfs_destroy_layouts_byclid(struct nfs_client *clp,
|
|
bool is_recall);
|
|
bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst,
|
|
struct pnfs_layout_range *dst_range,
|
|
struct inode *inode);
|
|
void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo);
|
|
void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
|
|
const nfs4_stateid *new,
|
|
const struct cred *cred,
|
|
bool update_barrier);
|
|
int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo,
|
|
struct list_head *tmp_list,
|
|
const struct pnfs_layout_range *recall_range,
|
|
u32 seq);
|
|
int pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo,
|
|
struct list_head *tmp_list,
|
|
const struct pnfs_layout_range *recall_range,
|
|
u32 seq);
|
|
int pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo,
|
|
struct list_head *lseg_list);
|
|
bool pnfs_roc(struct inode *ino,
|
|
struct nfs4_layoutreturn_args *args,
|
|
struct nfs4_layoutreturn_res *res,
|
|
const struct cred *cred);
|
|
int pnfs_roc_done(struct rpc_task *task, struct nfs4_layoutreturn_args **argpp,
|
|
struct nfs4_layoutreturn_res **respp, int *ret);
|
|
void pnfs_roc_release(struct nfs4_layoutreturn_args *args,
|
|
struct nfs4_layoutreturn_res *res,
|
|
int ret);
|
|
bool pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task);
|
|
void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t);
|
|
void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
|
|
int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
|
|
int pnfs_generic_sync(struct inode *inode, bool datasync);
|
|
int pnfs_nfs_generic_sync(struct inode *inode, bool datasync);
|
|
int _pnfs_return_layout(struct inode *);
|
|
int pnfs_commit_and_return_layout(struct inode *);
|
|
void pnfs_ld_write_done(struct nfs_pgio_header *);
|
|
void pnfs_ld_read_done(struct nfs_pgio_header *);
|
|
void pnfs_read_resend_pnfs(struct nfs_pgio_header *, unsigned int mirror_idx);
|
|
struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino,
|
|
struct nfs_open_context *ctx,
|
|
loff_t pos,
|
|
u64 count,
|
|
enum pnfs_iomode iomode,
|
|
bool strict_iomode,
|
|
gfp_t gfp_flags);
|
|
void pnfs_layoutreturn_free_lsegs(struct pnfs_layout_hdr *lo,
|
|
const nfs4_stateid *arg_stateid,
|
|
const struct pnfs_layout_range *range,
|
|
const nfs4_stateid *stateid);
|
|
|
|
void pnfs_generic_layout_insert_lseg(struct pnfs_layout_hdr *lo,
|
|
struct pnfs_layout_segment *lseg,
|
|
bool (*is_after)(const struct pnfs_layout_range *lseg_range,
|
|
const struct pnfs_layout_range *old),
|
|
bool (*do_merge)(struct pnfs_layout_segment *lseg,
|
|
struct pnfs_layout_segment *old),
|
|
struct list_head *free_me);
|
|
|
|
void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp);
|
|
int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *);
|
|
int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *);
|
|
struct nfs4_threshold *pnfs_mdsthreshold_alloc(void);
|
|
void pnfs_error_mark_layout_for_return(struct inode *inode,
|
|
struct pnfs_layout_segment *lseg);
|
|
void pnfs_layout_return_unused_byclid(struct nfs_client *clp,
|
|
enum pnfs_iomode iomode);
|
|
|
|
/* nfs4_deviceid_flags */
|
|
enum {
|
|
NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */
|
|
NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */
|
|
NFS_DEVICEID_NOCACHE, /* device may not be cached */
|
|
};
|
|
|
|
/* pnfs_dev.c */
|
|
struct nfs4_deviceid_node {
|
|
struct hlist_node node;
|
|
struct hlist_node tmpnode;
|
|
const struct pnfs_layoutdriver_type *ld;
|
|
const struct nfs_client *nfs_client;
|
|
unsigned long flags;
|
|
unsigned long timestamp_unavailable;
|
|
struct nfs4_deviceid deviceid;
|
|
struct rcu_head rcu;
|
|
atomic_t ref;
|
|
};
|
|
|
|
struct nfs4_deviceid_node *
|
|
nfs4_find_get_deviceid(struct nfs_server *server,
|
|
const struct nfs4_deviceid *id, const struct cred *cred,
|
|
gfp_t gfp_mask);
|
|
void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
|
|
void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *,
|
|
const struct nfs4_deviceid *);
|
|
bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *);
|
|
void nfs4_mark_deviceid_available(struct nfs4_deviceid_node *node);
|
|
void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node);
|
|
bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node);
|
|
void nfs4_deviceid_purge_client(const struct nfs_client *);
|
|
|
|
/* pnfs_nfs.c */
|
|
struct pnfs_commit_array *pnfs_alloc_commit_array(size_t n, gfp_t gfp_flags);
|
|
void pnfs_free_commit_array(struct pnfs_commit_array *p);
|
|
struct pnfs_commit_array *pnfs_add_commit_array(struct pnfs_ds_commit_info *,
|
|
struct pnfs_commit_array *,
|
|
struct pnfs_layout_segment *);
|
|
|
|
void pnfs_generic_ds_cinfo_release_lseg(struct pnfs_ds_commit_info *fl_cinfo,
|
|
struct pnfs_layout_segment *lseg);
|
|
void pnfs_generic_ds_cinfo_destroy(struct pnfs_ds_commit_info *fl_cinfo);
|
|
|
|
void pnfs_generic_clear_request_commit(struct nfs_page *req,
|
|
struct nfs_commit_info *cinfo);
|
|
void pnfs_generic_commit_release(void *calldata);
|
|
void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data);
|
|
void pnfs_generic_rw_release(void *data);
|
|
void pnfs_generic_recover_commit_reqs(struct list_head *dst,
|
|
struct nfs_commit_info *cinfo);
|
|
struct nfs_page *pnfs_generic_search_commit_reqs(struct nfs_commit_info *cinfo,
|
|
struct folio *folio);
|
|
int pnfs_generic_commit_pagelist(struct inode *inode,
|
|
struct list_head *mds_pages,
|
|
int how,
|
|
struct nfs_commit_info *cinfo,
|
|
int (*initiate_commit)(struct nfs_commit_data *data,
|
|
int how));
|
|
int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max);
|
|
void pnfs_generic_write_commit_done(struct rpc_task *task, void *data);
|
|
void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds);
|
|
struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs,
|
|
gfp_t gfp_flags);
|
|
void nfs4_pnfs_v3_ds_connect_unload(void);
|
|
int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds,
|
|
struct nfs4_deviceid_node *devid, unsigned int timeo,
|
|
unsigned int retrans, u32 version, u32 minor_version);
|
|
struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net,
|
|
struct xdr_stream *xdr,
|
|
gfp_t gfp_flags);
|
|
void pnfs_layout_mark_request_commit(struct nfs_page *req,
|
|
struct pnfs_layout_segment *lseg,
|
|
struct nfs_commit_info *cinfo,
|
|
u32 ds_commit_idx);
|
|
void pnfs_lgopen_prepare(struct nfs4_opendata *data,
|
|
struct nfs_open_context *ctx);
|
|
void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp,
|
|
struct nfs_open_context *ctx);
|
|
void nfs4_lgopen_release(struct nfs4_layoutget *lgp);
|
|
|
|
static inline bool nfs_have_layout(struct inode *inode)
|
|
{
|
|
return NFS_I(inode)->layout != NULL;
|
|
}
|
|
|
|
static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo)
|
|
{
|
|
return test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) == 0;
|
|
}
|
|
|
|
static inline struct nfs4_deviceid_node *
|
|
nfs4_get_deviceid(struct nfs4_deviceid_node *d)
|
|
{
|
|
atomic_inc(&d->ref);
|
|
return d;
|
|
}
|
|
|
|
static inline struct pnfs_layout_segment *
|
|
pnfs_get_lseg(struct pnfs_layout_segment *lseg)
|
|
{
|
|
if (lseg) {
|
|
refcount_inc(&lseg->pls_refcount);
|
|
smp_mb__after_atomic();
|
|
}
|
|
return lseg;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_is_valid_lseg(struct pnfs_layout_segment *lseg)
|
|
{
|
|
return test_bit(NFS_LSEG_VALID, &lseg->pls_flags) != 0;
|
|
}
|
|
|
|
/* Return true if a layout driver is being used for this mountpoint */
|
|
static inline int pnfs_enabled_sb(struct nfs_server *nfss)
|
|
{
|
|
return nfss->pnfs_curr_ld != NULL;
|
|
}
|
|
|
|
static inline int
|
|
pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how,
|
|
struct nfs_commit_info *cinfo)
|
|
{
|
|
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
|
|
|
|
if (fl_cinfo == NULL || fl_cinfo->ncommitting == 0)
|
|
return PNFS_NOT_ATTEMPTED;
|
|
return fl_cinfo->ops->commit_pagelist(inode, mds_pages, how, cinfo);
|
|
}
|
|
|
|
static inline struct pnfs_ds_commit_info *
|
|
pnfs_get_ds_info(struct inode *inode)
|
|
{
|
|
struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
|
|
|
|
if (ld == NULL || ld->get_ds_info == NULL)
|
|
return NULL;
|
|
return ld->get_ds_info(inode);
|
|
}
|
|
|
|
static inline void
|
|
pnfs_init_ds_commit_info_ops(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode)
|
|
{
|
|
struct pnfs_ds_commit_info *inode_cinfo = pnfs_get_ds_info(inode);
|
|
if (inode_cinfo != NULL)
|
|
fl_cinfo->ops = inode_cinfo->ops;
|
|
}
|
|
|
|
static inline void
|
|
pnfs_init_ds_commit_info(struct pnfs_ds_commit_info *fl_cinfo)
|
|
{
|
|
INIT_LIST_HEAD(&fl_cinfo->commits);
|
|
fl_cinfo->ops = NULL;
|
|
}
|
|
|
|
static inline void
|
|
pnfs_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode)
|
|
{
|
|
if (fl_cinfo->ops != NULL && fl_cinfo->ops->release_ds_info != NULL)
|
|
fl_cinfo->ops->release_ds_info(fl_cinfo, inode);
|
|
}
|
|
|
|
static inline void
|
|
pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node)
|
|
{
|
|
set_bit(NFS_DEVICEID_INVALID, &node->flags);
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,
|
|
struct nfs_commit_info *cinfo, u32 ds_commit_idx)
|
|
{
|
|
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
|
|
|
|
if (!lseg || !fl_cinfo->ops || !fl_cinfo->ops->mark_request_commit)
|
|
return false;
|
|
fl_cinfo->ops->mark_request_commit(req, lseg, cinfo, ds_commit_idx);
|
|
return true;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo)
|
|
{
|
|
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
|
|
|
|
if (!fl_cinfo || !fl_cinfo->ops || !fl_cinfo->ops->clear_request_commit)
|
|
return false;
|
|
fl_cinfo->ops->clear_request_commit(req, cinfo);
|
|
return true;
|
|
}
|
|
|
|
static inline int
|
|
pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo,
|
|
int max)
|
|
{
|
|
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
|
|
|
|
if (!fl_cinfo || fl_cinfo->nwritten == 0)
|
|
return 0;
|
|
return fl_cinfo->ops->scan_commit_lists(cinfo, max);
|
|
}
|
|
|
|
static inline void
|
|
pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo)
|
|
{
|
|
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
|
|
|
|
if (fl_cinfo && fl_cinfo->nwritten != 0)
|
|
fl_cinfo->ops->recover_commit_reqs(head, cinfo);
|
|
}
|
|
|
|
static inline struct nfs_page *
|
|
pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,
|
|
struct folio *folio)
|
|
{
|
|
struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds;
|
|
|
|
if (!fl_cinfo->ops || !fl_cinfo->ops->search_commit_reqs)
|
|
return NULL;
|
|
return fl_cinfo->ops->search_commit_reqs(cinfo, folio);
|
|
}
|
|
|
|
/* Should the pNFS client commit and return the layout upon a setattr */
|
|
static inline bool
|
|
pnfs_ld_layoutret_on_setattr(struct inode *inode)
|
|
{
|
|
if (!pnfs_enabled_sb(NFS_SERVER(inode)))
|
|
return false;
|
|
return NFS_SERVER(inode)->pnfs_curr_ld->flags &
|
|
PNFS_LAYOUTRET_ON_SETATTR;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_ld_read_whole_page(struct inode *inode)
|
|
{
|
|
if (!pnfs_enabled_sb(NFS_SERVER(inode)))
|
|
return false;
|
|
return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE;
|
|
}
|
|
|
|
static inline int
|
|
pnfs_sync_inode(struct inode *inode, bool datasync)
|
|
{
|
|
if (!pnfs_enabled_sb(NFS_SERVER(inode)))
|
|
return 0;
|
|
return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync);
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_layoutcommit_outstanding(struct inode *inode)
|
|
{
|
|
struct nfs_inode *nfsi = NFS_I(inode);
|
|
|
|
return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 ||
|
|
test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0;
|
|
}
|
|
|
|
static inline int pnfs_return_layout(struct inode *ino)
|
|
{
|
|
struct nfs_inode *nfsi = NFS_I(ino);
|
|
struct nfs_server *nfss = NFS_SERVER(ino);
|
|
|
|
if (pnfs_enabled_sb(nfss) && nfsi->layout) {
|
|
set_bit(NFS_LAYOUT_RETURN_REQUESTED, &nfsi->layout->plh_flags);
|
|
return _pnfs_return_layout(ino);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src,
|
|
struct nfs_server *nfss)
|
|
{
|
|
return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld &&
|
|
nfss->pnfs_curr_ld->id == src->l_type);
|
|
}
|
|
|
|
static inline u64
|
|
pnfs_calc_offset_end(u64 offset, u64 len)
|
|
{
|
|
if (len == NFS4_MAX_UINT64 || len >= NFS4_MAX_UINT64 - offset)
|
|
return NFS4_MAX_UINT64;
|
|
return offset + len - 1;
|
|
}
|
|
|
|
static inline u64
|
|
pnfs_calc_offset_length(u64 offset, u64 end)
|
|
{
|
|
if (end == NFS4_MAX_UINT64 || end <= offset)
|
|
return NFS4_MAX_UINT64;
|
|
return 1 + end - offset;
|
|
}
|
|
|
|
static inline void
|
|
pnfs_copy_range(struct pnfs_layout_range *dst,
|
|
const struct pnfs_layout_range *src)
|
|
{
|
|
memcpy(dst, src, sizeof(*dst));
|
|
}
|
|
|
|
static inline u64
|
|
pnfs_end_offset(u64 start, u64 len)
|
|
{
|
|
if (NFS4_MAX_UINT64 - start <= len)
|
|
return NFS4_MAX_UINT64;
|
|
return start + len;
|
|
}
|
|
|
|
/*
|
|
* Are 2 ranges intersecting?
|
|
* start1 end1
|
|
* [----------------------------------)
|
|
* start2 end2
|
|
* [----------------)
|
|
*/
|
|
static inline bool
|
|
pnfs_is_range_intersecting(u64 start1, u64 end1, u64 start2, u64 end2)
|
|
{
|
|
return (end1 == NFS4_MAX_UINT64 || start2 < end1) &&
|
|
(end2 == NFS4_MAX_UINT64 || start1 < end2);
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_lseg_range_intersecting(const struct pnfs_layout_range *l1,
|
|
const struct pnfs_layout_range *l2)
|
|
{
|
|
u64 end1 = pnfs_end_offset(l1->offset, l1->length);
|
|
u64 end2 = pnfs_end_offset(l2->offset, l2->length);
|
|
|
|
return pnfs_is_range_intersecting(l1->offset, end1, l2->offset, end2);
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_lseg_request_intersecting(struct pnfs_layout_segment *lseg, struct nfs_page *req)
|
|
{
|
|
u64 seg_last = pnfs_end_offset(lseg->pls_range.offset, lseg->pls_range.length);
|
|
u64 req_last = req_offset(req) + req->wb_bytes;
|
|
|
|
return pnfs_is_range_intersecting(lseg->pls_range.offset, seg_last,
|
|
req_offset(req), req_last);
|
|
}
|
|
|
|
static inline void pnfs_lseg_cancel_io(struct nfs_server *server,
|
|
struct pnfs_layout_segment *lseg)
|
|
{
|
|
if (server->pnfs_curr_ld->cancel_io)
|
|
server->pnfs_curr_ld->cancel_io(lseg);
|
|
}
|
|
|
|
extern unsigned int layoutstats_timer;
|
|
|
|
#ifdef NFS_DEBUG
|
|
void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id);
|
|
#else
|
|
static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id)
|
|
{
|
|
}
|
|
|
|
#endif /* NFS_DEBUG */
|
|
#else /* CONFIG_NFS_V4_1 */
|
|
|
|
static inline bool nfs_have_layout(struct inode *inode)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline void pnfs_destroy_all_layouts(struct nfs_client *clp)
|
|
{
|
|
}
|
|
|
|
static inline void pnfs_destroy_layout(struct nfs_inode *nfsi)
|
|
{
|
|
}
|
|
|
|
static inline void pnfs_destroy_layout_final(struct nfs_inode *nfsi)
|
|
{
|
|
}
|
|
|
|
static inline struct pnfs_layout_segment *
|
|
pnfs_get_lseg(struct pnfs_layout_segment *lseg)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg)
|
|
{
|
|
}
|
|
|
|
static inline int pnfs_return_layout(struct inode *ino)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int pnfs_commit_and_return_layout(struct inode *inode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_ld_layoutret_on_setattr(struct inode *inode)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_ld_read_whole_page(struct inode *inode)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int
|
|
pnfs_sync_inode(struct inode *inode, bool datasync)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_layoutcommit_outstanding(struct inode *inode)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
|
|
static inline bool
|
|
pnfs_roc(struct inode *ino,
|
|
struct nfs4_layoutreturn_args *args,
|
|
struct nfs4_layoutreturn_res *res,
|
|
const struct cred *cred)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int
|
|
pnfs_roc_done(struct rpc_task *task,
|
|
struct nfs4_layoutreturn_args **argpp,
|
|
struct nfs4_layoutreturn_res **respp,
|
|
int *ret)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
pnfs_roc_release(struct nfs4_layoutreturn_args *args,
|
|
struct nfs4_layoutreturn_res *res,
|
|
int ret)
|
|
{
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline void set_pnfs_layoutdriver(struct nfs_server *s,
|
|
const struct nfs_fh *mntfh,
|
|
struct nfs_fsinfo *fsinfo)
|
|
{
|
|
}
|
|
|
|
static inline void unset_pnfs_layoutdriver(struct nfs_server *s)
|
|
{
|
|
}
|
|
|
|
static inline int
|
|
pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how,
|
|
struct nfs_commit_info *cinfo)
|
|
{
|
|
return PNFS_NOT_ATTEMPTED;
|
|
}
|
|
|
|
static inline struct pnfs_ds_commit_info *
|
|
pnfs_get_ds_info(struct inode *inode)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void
|
|
pnfs_init_ds_commit_info_ops(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode)
|
|
{
|
|
}
|
|
|
|
static inline void
|
|
pnfs_init_ds_commit_info(struct pnfs_ds_commit_info *fl_cinfo)
|
|
{
|
|
}
|
|
|
|
static inline void
|
|
pnfs_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, struct inode *inode)
|
|
{
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,
|
|
struct nfs_commit_info *cinfo, u32 ds_commit_idx)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int
|
|
pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo,
|
|
int max)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
pnfs_recover_commit_reqs(struct list_head *head, struct nfs_commit_info *cinfo)
|
|
{
|
|
}
|
|
|
|
static inline struct nfs_page *
|
|
pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,
|
|
struct folio *folio)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool
|
|
pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src,
|
|
struct nfs_server *nfss)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void nfs4_pnfs_v3_ds_connect_unload(void)
|
|
{
|
|
}
|
|
|
|
static inline bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst,
|
|
struct pnfs_layout_range *dst_range,
|
|
struct inode *inode)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline void pnfs_lgopen_prepare(struct nfs4_opendata *data,
|
|
struct nfs_open_context *ctx)
|
|
{
|
|
}
|
|
|
|
static inline void pnfs_parse_lgopen(struct inode *ino,
|
|
struct nfs4_layoutget *lgp,
|
|
struct nfs_open_context *ctx)
|
|
{
|
|
}
|
|
|
|
static inline void nfs4_lgopen_release(struct nfs4_layoutget *lgp)
|
|
{
|
|
}
|
|
|
|
static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
|
|
#if IS_ENABLED(CONFIG_NFS_V4_2)
|
|
int pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags);
|
|
#else
|
|
static inline int
|
|
pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#endif /* FS_NFS_PNFS_H */
|