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Diffstat (limited to 'fs/nfs/pnfs.h')
-rw-r--r--fs/nfs/pnfs.h98
1 files changed, 52 insertions, 46 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 53d593a0a4f2..442ebf68eeec 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 */