diff options
Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r-- | fs/nfs/pnfs.h | 98 |
1 files changed, 52 insertions, 46 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 53d593a0a4f..442ebf68eee 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -94,11 +94,10 @@ struct pnfs_layoutdriver_type { const struct nfs_pageio_ops *pg_read_ops; const struct nfs_pageio_ops *pg_write_ops; - /* Returns true if layoutdriver wants to divert this request to - * driver's commit routine. - */ - bool (*mark_pnfs_commit)(struct pnfs_layout_segment *lseg); - struct list_head * (*choose_commit_list) (struct nfs_page *req); + void (*mark_request_commit) (struct nfs_page *req, + struct pnfs_layout_segment *lseg); + void (*clear_request_commit) (struct nfs_page *req); + int (*scan_commit_lists) (struct inode *inode, int max, spinlock_t *lock); int (*commit_pagelist)(struct inode *inode, struct list_head *mds_pages, int how); /* @@ -229,7 +228,6 @@ struct nfs4_deviceid_node { atomic_t ref; }; -void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); 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 *, @@ -262,20 +260,6 @@ static inline int pnfs_enabled_sb(struct nfs_server *nfss) return nfss->pnfs_curr_ld != NULL; } -static inline void -pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) -{ - if (lseg) { - struct pnfs_layoutdriver_type *ld; - - ld = NFS_SERVER(req->wb_page->mapping->host)->pnfs_curr_ld; - if (ld->mark_pnfs_commit && ld->mark_pnfs_commit(lseg)) { - set_bit(PG_PNFS_COMMIT, &req->wb_flags); - req->wb_commit_lseg = get_lseg(lseg); - } - } -} - static inline int pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) { @@ -284,27 +268,42 @@ pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how); } -static inline struct list_head * -pnfs_choose_commit_list(struct nfs_page *req, struct list_head *mds) +static inline bool +pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) { - struct list_head *rv; + struct inode *inode = req->wb_context->dentry->d_inode; + struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; - if (test_and_clear_bit(PG_PNFS_COMMIT, &req->wb_flags)) { - struct inode *inode = req->wb_commit_lseg->pls_layout->plh_inode; + if (lseg == NULL || ld->mark_request_commit == NULL) + return false; + ld->mark_request_commit(req, lseg); + return true; +} - set_bit(NFS_INO_PNFS_COMMIT, &NFS_I(inode)->flags); - rv = NFS_SERVER(inode)->pnfs_curr_ld->choose_commit_list(req); - /* matched by ref taken when PG_PNFS_COMMIT is set */ - put_lseg(req->wb_commit_lseg); - } else - rv = mds; - return rv; +static inline bool +pnfs_clear_request_commit(struct nfs_page *req) +{ + struct inode *inode = req->wb_context->dentry->d_inode; + struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; + + if (ld == NULL || ld->clear_request_commit == NULL) + return false; + ld->clear_request_commit(req); + return true; } -static inline void pnfs_clear_request_commit(struct nfs_page *req) +static inline int +pnfs_scan_commit_lists(struct inode *inode, int max, spinlock_t *lock) { - if (test_and_clear_bit(PG_PNFS_COMMIT, &req->wb_flags)) - put_lseg(req->wb_commit_lseg); + struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; + int ret; + + if (ld == NULL || ld->scan_commit_lists == NULL) + return 0; + ret = ld->scan_commit_lists(inode, max, lock); + if (ret != 0) + set_bit(NFS_INO_PNFS_COMMIT, &NFS_I(inode)->flags); + return ret; } /* Should the pNFS client commit and return the layout upon a setattr */ @@ -328,6 +327,13 @@ static inline int pnfs_return_layout(struct inode *ino) return 0; } +#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 void pnfs_destroy_all_layouts(struct nfs_client *clp) @@ -400,35 +406,35 @@ static inline bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, st return false; } -static inline void -pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) -{ -} - static inline int pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) { return PNFS_NOT_ATTEMPTED; } -static inline struct list_head * -pnfs_choose_commit_list(struct nfs_page *req, struct list_head *mds) +static inline bool +pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) { - return mds; + return false; } -static inline void pnfs_clear_request_commit(struct nfs_page *req) +static inline bool +pnfs_clear_request_commit(struct nfs_page *req) { + return false; } -static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) +static inline int +pnfs_scan_commit_lists(struct inode *inode, int max, spinlock_t *lock) { return 0; } -static inline void nfs4_deviceid_purge_client(struct nfs_client *ncl) +static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) { + return 0; } + #endif /* CONFIG_NFS_V4_1 */ #endif /* FS_NFS_PNFS_H */ |