nfs: Provide a splice-read wrapper

[linux-block.git] / fs / nfs / internal.h

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 2a65fe2a63abdb2267011ead32a3170b93d94d38..b5f21d35d30e84249b76184cd3c35ff21e4a61fe 100644 (file)
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -416,6 +416,8 @@ static inline __u32 nfs_access_xattr_mask(const struct nfs_server *server)
 int nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync);
 loff_t nfs_file_llseek(struct file *, loff_t, int);
 ssize_t nfs_file_read(struct kiocb *, struct iov_iter *);
+ssize_t nfs_file_splice_read(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe,
+                            size_t len, unsigned int flags);
 int nfs_file_mmap(struct file *, struct vm_area_struct *);
 ssize_t nfs_file_write(struct kiocb *, struct iov_iter *);
 int nfs_file_release(struct inode *, struct file *);
@@ -452,6 +454,10 @@ extern void nfs_sb_deactive(struct super_block *sb);
 extern int nfs_client_for_each_server(struct nfs_client *clp,
                                      int (*fn)(struct nfs_server *, void *),
                                      void *data);
+#ifdef CONFIG_NFS_FSCACHE
+extern const struct netfs_request_ops nfs_netfs_ops;
+#endif
+
 /* io.c */
 extern void nfs_start_io_read(struct inode *inode);
 extern void nfs_end_io_read(struct inode *inode);
@@ -481,9 +487,14 @@ extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool
 
 struct nfs_pgio_completion_ops;
 /* read.c */
+extern const struct nfs_pgio_completion_ops nfs_async_read_completion_ops;
 extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
                        struct inode *inode, bool force_mds,
                        const struct nfs_pgio_completion_ops *compl_ops);
+extern int nfs_read_add_folio(struct nfs_pageio_descriptor *pgio,
+                              struct nfs_open_context *ctx,
+                              struct folio *folio);
+extern void nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio);
 extern void nfs_read_prepare(struct rpc_task *task, void *calldata);
 extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio);
 
@@ -846,27 +857,12 @@ u64 nfs_timespec_to_change_attr(const struct timespec64 *ts)
 }
 
 #ifdef CONFIG_CRC32
-/**
- * nfs_fhandle_hash - calculate the crc32 hash for the filehandle
- * @fh - pointer to filehandle
- *
- * returns a crc32 hash for the filehandle that is compatible with
- * the one displayed by "wireshark".
- */
-static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
-{
-       return ~crc32_le(0xFFFFFFFF, &fh->data[0], fh->size);
-}
 static inline u32 nfs_stateid_hash(const nfs4_stateid *stateid)
 {
        return ~crc32_le(0xFFFFFFFF, &stateid->other[0],
                                NFS4_STATEID_OTHER_SIZE);
 }
 #else
-static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
-{
-       return 0;
-}
 static inline u32 nfs_stateid_hash(nfs4_stateid *stateid)
 {
        return 0;