diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-29 10:43:51 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-29 10:43:51 -0700 |
commit | 53f2c4a8fd882009a2a75c5b72d6898c0808616e (patch) | |
tree | 922293a1056c0c2358203cdab832f0e0891e628a /fs/nfs/pnfs.h | |
parent | 8f6576ad476b2a22d05ddafd2ddaee102577a4ed (diff) | |
parent | cc0a98436820b161b595b8cc1d2329bcf7328107 (diff) | |
download | linux-53f2c4a8fd882009a2a75c5b72d6898c0808616e.tar.bz2 |
Merge tag 'nfs-for-3.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"New features include:
- Rewrite the O_DIRECT code so that it can share the same coalescing
and pNFS functionality as the page cache code.
- Allow the server to provide hints as to when we should use pNFS,
and when it is more efficient to read and write through the
metadata server.
- NFS cache consistency updates:
* Use the ctime to emulate a change attribute for NFSv2/v3 so that
all NFS versions can share the same cache management code.
* New cache management code will only look at the change attribute
and size attribute when deciding whether or not our cached data
is still valid or not.
* Don't request NFSv4 post-op attributes on writes in cases such as
O_DIRECT, where we don't care about data cache consistency, or
when we have a write delegation, and know that our cache is still
consistent.
* Don't request NFSv4 post-op attributes on operations such as
COMMIT, where there are no expected metadata updates.
* Don't request NFSv4 directory post-op attributes in cases where
the operations themselves already return change attribute
updates: i.e. operations such as OPEN, CREATE, REMOVE, LINK and
RENAME.
- Speed up 'ls' and friends by using READDIR rather than READDIRPLUS
if we detect no attempts to lookup filenames.
- Improve the code sharing between NFSv2/v3 and v4 mounts
- NFSv4.1 state management efficiency improvements
- More patches in preparation for NFSv4/v4.1 migration functionality."
Fix trivial conflict in fs/nfs/nfs4proc.c that was due to the dcache
qstr name initialization changes (that made the length/hash a 64-bit
union)
* tag 'nfs-for-3.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (146 commits)
NFSv4: Add debugging printks to state manager
NFSv4: Map NFS4ERR_SHARE_DENIED into an EACCES error instead of EIO
NFSv4: update_changeattr does not need to set NFS_INO_REVAL_PAGECACHE
NFSv4.1: nfs4_reset_session should use nfs4_handle_reclaim_lease_error
NFSv4.1: Handle other occurrences of NFS4ERR_CONN_NOT_BOUND_TO_SESSION
NFSv4.1: Handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION in the state manager
NFSv4.1: Handle errors in nfs4_bind_conn_to_session
NFSv4.1: nfs4_bind_conn_to_session should drain the session
NFSv4.1: Don't clobber the seqid if exchange_id returns a confirmed clientid
NFSv4.1: Add DESTROY_CLIENTID
NFSv4.1: Ensure we use the correct credentials for bind_conn_to_session
NFSv4.1: Ensure we use the correct credentials for session create/destroy
NFSv4.1: Move NFSPROC4_CLNT_BIND_CONN_TO_SESSION to the end of the operations
NFSv4.1: Handle NFS4ERR_SEQ_MISORDERED when confirming the lease
NFSv4: When purging the lease, we must clear NFS4CLNT_LEASE_CONFIRM
NFSv4: Clean up the error handling for nfs4_reclaim_lease
NFSv4.1: Exchange ID must use GFP_NOFS allocation mode
nfs41: Use BIND_CONN_TO_SESSION for CB_PATH_DOWN*
nfs4.1: add BIND_CONN_TO_SESSION operation
NFSv4.1 test the mdsthreshold hint parameters
...
Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r-- | fs/nfs/pnfs.h | 127 |
1 files changed, 99 insertions, 28 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 442ebf68eeec..29fd23c0efdc 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -63,6 +63,7 @@ enum { NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ NFS_LAYOUT_ROC, /* some lseg had roc bit set */ NFS_LAYOUT_DESTROYED, /* no new use of layout allowed */ + NFS_LAYOUT_INVALID, /* layout is being destroyed */ }; enum layoutdriver_policy_flags { @@ -94,11 +95,20 @@ struct pnfs_layoutdriver_type { 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); 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); + struct pnfs_layout_segment *lseg, + struct nfs_commit_info *cinfo); + 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); + int (*commit_pagelist)(struct inode *inode, + struct list_head *mds_pages, + int how, + struct nfs_commit_info *cinfo); /* * Return PNFS_ATTEMPTED to indicate the layout code has attempted @@ -168,8 +178,10 @@ extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp); void get_layout_hdr(struct pnfs_layout_hdr *lo); void put_lseg(struct pnfs_layout_segment *lseg); -bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *); -bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *, int); +bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *, + const struct nfs_pgio_completion_ops *); +bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *, + int, const struct nfs_pgio_completion_ops *); void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); void unset_pnfs_layoutdriver(struct nfs_server *); @@ -211,6 +223,11 @@ struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, gfp_t gfp_flags); void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); +int pnfs_read_done_resend_to_mds(struct inode *inode, struct list_head *head, + const struct nfs_pgio_completion_ops *compl_ops); +int pnfs_write_done_resend_to_mds(struct inode *inode, struct list_head *head, + const struct nfs_pgio_completion_ops *compl_ops); +struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); /* nfs4_deviceid_flags */ enum { @@ -261,49 +278,66 @@ static inline int pnfs_enabled_sb(struct nfs_server *nfss) } static inline int -pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) +pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, + struct nfs_commit_info *cinfo) { - if (!test_and_clear_bit(NFS_INO_PNFS_COMMIT, &NFS_I(inode)->flags)) + if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0) return PNFS_NOT_ATTEMPTED; - return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how); + return NFS_SERVER(inode)->pnfs_curr_ld->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 bool -pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) +pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, + struct nfs_commit_info *cinfo) { struct inode *inode = req->wb_context->dentry->d_inode; struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; if (lseg == NULL || ld->mark_request_commit == NULL) return false; - ld->mark_request_commit(req, lseg); + ld->mark_request_commit(req, lseg, cinfo); return true; } static inline bool -pnfs_clear_request_commit(struct nfs_page *req) +pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) { 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); + ld->clear_request_commit(req, cinfo); return true; } static inline int -pnfs_scan_commit_lists(struct inode *inode, int max, spinlock_t *lock) +pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, + int max) { - struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; - int ret; - - if (ld == NULL || ld->scan_commit_lists == NULL) + if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) 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; + else + return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); +} + +static inline void +pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, + struct nfs_commit_info *cinfo) +{ + if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) + return; + NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo); } /* Should the pNFS client commit and return the layout upon a setattr */ @@ -327,6 +361,14 @@ static inline int pnfs_return_layout(struct inode *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->id == src->l_type); +} + #ifdef NFS_DEBUG void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); #else @@ -396,45 +438,74 @@ static inline void unset_pnfs_layoutdriver(struct nfs_server *s) { } -static inline bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode) +static inline bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, + const struct nfs_pgio_completion_ops *compl_ops) { return false; } -static inline bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags) +static inline bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, + const struct nfs_pgio_completion_ops *compl_ops) { return false; } static inline int -pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) +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 bool -pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) +pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, + struct nfs_commit_info *cinfo) { return false; } static inline bool -pnfs_clear_request_commit(struct nfs_page *req) +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, int max, spinlock_t *lock) +pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, + int max) { return 0; } +static inline void +pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list, + struct nfs_commit_info *cinfo) +{ +} + 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; +} + #endif /* CONFIG_NFS_V4_1 */ #endif /* FS_NFS_PNFS_H */ |