113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
|
|
* vim: noexpandtab sw=8 ts=8 sts=0:
|
|
*
|
|
* Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*/
|
|
|
|
#ifndef OCFS2_AOPS_H
|
|
#define OCFS2_AOPS_H
|
|
|
|
int ocfs2_prepare_write_nolock(struct inode *inode, struct page *page,
|
|
unsigned from, unsigned to);
|
|
|
|
handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
|
|
struct page *page,
|
|
unsigned from,
|
|
unsigned to);
|
|
|
|
int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
|
|
struct inode *inode, unsigned int from,
|
|
unsigned int to, int new);
|
|
|
|
int walk_page_buffers( handle_t *handle,
|
|
struct buffer_head *head,
|
|
unsigned from,
|
|
unsigned to,
|
|
int *partial,
|
|
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 *);
|
|
|
|
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);
|
|
|
|
/* all ocfs2_dio_end_io()'s fault */
|
|
#define ocfs2_iocb_is_rw_locked(iocb) \
|
|
test_bit(0, (unsigned long *)&iocb->private)
|
|
static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
|
|
{
|
|
set_bit(0, (unsigned long *)&iocb->private);
|
|
if (level)
|
|
set_bit(1, (unsigned long *)&iocb->private);
|
|
else
|
|
clear_bit(1, (unsigned long *)&iocb->private);
|
|
}
|
|
#define ocfs2_iocb_clear_rw_locked(iocb) \
|
|
clear_bit(0, (unsigned long *)&iocb->private)
|
|
#define ocfs2_iocb_rw_locked_level(iocb) \
|
|
test_bit(1, (unsigned long *)&iocb->private)
|
|
#endif /* OCFS2_FILE_H */
|