From 3a307ffc2730bfa1a4dfa94537be9d412338aad2 Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Tue, 8 May 2007 17:47:32 -0700 Subject: ocfs2: rework ocfs2_buffered_write_cluster() Use some ideas from the new-aops patch series and turn ocfs2_buffered_write_cluster() into a 2 stage operation with the caller copying data in between. The code now understands multiple cluster writes as a result of having to deal with a full page write for greater than 4k pages. This sets us up to easily call into the write path during ->page_mkwrite(). Signed-off-by: Mark Fasheh --- fs/ocfs2/aops.h | 56 ++++++-------------------------------------------------- 1 file changed, 6 insertions(+), 50 deletions(-) (limited to 'fs/ocfs2/aops.h') diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h index 45821d479b5a..bdcdd1ae63a9 100644 --- a/fs/ocfs2/aops.h +++ b/fs/ocfs2/aops.h @@ -42,57 +42,13 @@ int walk_page_buffers( handle_t *handle, int (*fn)( handle_t *handle, struct buffer_head *bh)); -struct ocfs2_write_ctxt; -typedef int (ocfs2_page_writer)(struct inode *, struct ocfs2_write_ctxt *, - u64 *, unsigned int *, unsigned int *); +int ocfs2_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata); -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); - -struct ocfs2_splice_write_priv { - struct splice_desc *s_sd; - struct pipe_buffer *s_buf; - struct pipe_inode_info *s_pipe; - /* Neither offset value is ever larger than one page */ - unsigned int s_offset; - unsigned int s_buf_offset; -}; -int ocfs2_map_and_write_splice_data(struct inode *inode, - struct ocfs2_write_ctxt *wc, - u64 *p_blkno, - unsigned int *ret_from, - unsigned int *ret_to); +int ocfs2_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata); /* all ocfs2_dio_end_io()'s fault */ #define ocfs2_iocb_is_rw_locked(iocb) \ -- cgit v1.2.3