blob: 2d51649fc0902a4d6d13865a109bdd1252a6c770 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0-or-later */
* ocfs2_buffer_head.h
* Buffer cache handling functions defined
* Copyright (C) 2002, 2004 Oracle. All rights reserved.
#include <linux/buffer_head.h>
int ocfs2_write_block(struct ocfs2_super *osb,
struct buffer_head *bh,
struct ocfs2_caching_info *ci);
int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block,
unsigned int nr, struct buffer_head *bhs[]);
* If not NULL, validate() will be called on a buffer that is freshly
* read from disk. It will not be called if the buffer was in cache.
* Note that if validate() is being used for this buffer, it needs to
* be set even for a READAHEAD call, as it marks the buffer for later
* validation.
int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
struct buffer_head *bhs[], int flags,
int (*validate)(struct super_block *sb,
struct buffer_head *bh));
int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
struct buffer_head *bh);
static inline int ocfs2_read_block(struct ocfs2_caching_info *ci, u64 off,
struct buffer_head **bh,
int (*validate)(struct super_block *sb,
struct buffer_head *bh))
int status = 0;
if (bh == NULL) {
printk("ocfs2: bh == NULL\n");
status = -EINVAL;
goto bail;
status = ocfs2_read_blocks(ci, off, 1, bh, 0, validate);
return status;
#endif /* OCFS2_BUFFER_HEAD_IO_H */