diff options
Diffstat (limited to 'fs/ocfs2/aops.h')
| -rw-r--r-- | fs/ocfs2/aops.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h index f446a15eab8..eeb2c42483e 100644 --- a/fs/ocfs2/aops.h +++ b/fs/ocfs2/aops.h @@ -30,6 +30,44 @@ handle_t *ocfs2_start_walk_page_trans(struct inode *inode, unsigned from, unsigned to); +struct ocfs2_write_ctxt; +typedef int (ocfs2_page_writer)(struct inode *, struct ocfs2_write_ctxt *, + u64 *, unsigned int *, unsigned int *); + +ssize_t ocfs2_buffered_write_cluster(struct file *file, loff_t pos, + size_t count, ocfs2_page_writer *actor, + void *priv); + +struct ocfs2_write_ctxt { + size_t w_count; + loff_t w_pos; + u32 w_cpos; + unsigned int w_finished_copy; + + /* This is true if page_size > cluster_size */ + unsigned int w_large_pages; + + /* Filler callback and private data */ + ocfs2_page_writer *w_write_data_page; + void *w_private; + + /* Only valid for the filler callback */ + struct page *w_this_page; + unsigned int w_this_page_new; +}; + +struct ocfs2_buffered_write_priv { + char *b_src_buf; + const struct iovec *b_cur_iov; /* Current iovec */ + size_t b_cur_off; /* Offset in the + * current iovec */ +}; +int ocfs2_map_and_write_user_data(struct inode *inode, + struct ocfs2_write_ctxt *wc, + u64 *p_blkno, + unsigned int *ret_from, + unsigned int *ret_to); + /* all ocfs2_dio_end_io()'s fault */ #define ocfs2_iocb_is_rw_locked(iocb) \ test_bit(0, (unsigned long *)&iocb->private) |