From ccd979bdbce9fba8412beb3f1de68a9d0171b12c Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Thu, 15 Dec 2005 14:31:24 -0800 Subject: [PATCH] OCFS2: The Second Oracle Cluster Filesystem The OCFS2 file system module. Signed-off-by: Mark Fasheh Signed-off-by: Kurt Hackel --- fs/ocfs2/buffer_head_io.h | 73 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 fs/ocfs2/buffer_head_io.h (limited to 'fs/ocfs2/buffer_head_io.h') diff --git a/fs/ocfs2/buffer_head_io.h b/fs/ocfs2/buffer_head_io.h new file mode 100644 index 000000000000..6ecb90937b68 --- /dev/null +++ b/fs/ocfs2/buffer_head_io.h @@ -0,0 +1,73 @@ +/* -*- mode: c; c-basic-offset: 8; -*- + * vim: noexpandtab sw=8 ts=8 sts=0: + * + * ocfs2_buffer_head.h + * + * Buffer cache handling functions defined + * + * Copyright (C) 2002, 2004 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_BUFFER_HEAD_IO_H +#define OCFS2_BUFFER_HEAD_IO_H + +#include + +void ocfs2_end_buffer_io_sync(struct buffer_head *bh, + int uptodate); + +static inline int ocfs2_read_block(struct ocfs2_super *osb, + u64 off, + struct buffer_head **bh, + int flags, + struct inode *inode); + +int ocfs2_write_block(struct ocfs2_super *osb, + struct buffer_head *bh, + struct inode *inode); +int ocfs2_read_blocks(struct ocfs2_super *osb, + u64 block, + int nr, + struct buffer_head *bhs[], + int flags, + struct inode *inode); + + +#define OCFS2_BH_CACHED 1 +#define OCFS2_BH_READAHEAD 8 /* use this to pass READA down to submit_bh */ + +static inline int ocfs2_read_block(struct ocfs2_super * osb, u64 off, + struct buffer_head **bh, int flags, + struct inode *inode) +{ + int status = 0; + + if (bh == NULL) { + printk("ocfs2: bh == NULL\n"); + status = -EINVAL; + goto bail; + } + + status = ocfs2_read_blocks(osb, off, 1, bh, + flags, inode); + +bail: + return status; +} + +#endif /* OCFS2_BUFFER_HEAD_IO_H */ -- cgit v1.2.3-58-ga151