diff options
Diffstat (limited to 'include/linux/nfs_page.h')
| -rw-r--r-- | include/linux/nfs_page.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 0bbd587fac6a..ba7e2e4b0926 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -55,6 +55,7 @@ struct nfs_page { unsigned short wb_nio; /* Number of I/O attempts */ }; +struct nfs_pgio_mirror; struct nfs_pageio_descriptor; struct nfs_pageio_ops { void (*pg_init)(struct nfs_pageio_descriptor *, struct nfs_page *); @@ -64,6 +65,9 @@ struct nfs_pageio_ops { unsigned int (*pg_get_mirror_count)(struct nfs_pageio_descriptor *, struct nfs_page *); void (*pg_cleanup)(struct nfs_pageio_descriptor *); + struct nfs_pgio_mirror * + (*pg_get_mirror)(struct nfs_pageio_descriptor *, u32); + u32 (*pg_set_mirror)(struct nfs_pageio_descriptor *, u32); }; struct nfs_rw_ops { @@ -139,9 +143,14 @@ extern size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc, extern int nfs_wait_on_request(struct nfs_page *); extern void nfs_unlock_request(struct nfs_page *req); extern void nfs_unlock_and_release_request(struct nfs_page *); +extern struct nfs_page *nfs_page_group_lock_head(struct nfs_page *req); +extern int nfs_page_group_lock_subrequests(struct nfs_page *head); +extern void nfs_join_page_group(struct nfs_page *head, struct inode *inode); extern int nfs_page_group_lock(struct nfs_page *); extern void nfs_page_group_unlock(struct nfs_page *); extern bool nfs_page_group_sync_on_bit(struct nfs_page *, unsigned int); +extern int nfs_page_set_headlock(struct nfs_page *req); +extern void nfs_page_clear_headlock(struct nfs_page *req); extern bool nfs_async_iocounter_wait(struct rpc_task *, struct nfs_lock_context *); /* @@ -193,8 +202,7 @@ nfs_list_entry(struct list_head *head) return list_entry(head, struct nfs_page, wb_list); } -static inline -loff_t req_offset(struct nfs_page *req) +static inline loff_t req_offset(const struct nfs_page *req) { return (((loff_t)req->wb_index) << PAGE_SHIFT) + req->wb_offset; } |