ext4_jbd2.h

Go to the documentation of this file.

#ifndef _EXT4_JBD2_H
#define _EXT4_JBD2_H
 
/*
 * Wrapper functions with which ext4 calls into JBD.
 */
void ext4_journal_abort_handle(const char *caller, unsigned int line,
                   const char *err_fn, struct buffer_head *bh,
                   handle_t *handle, int err);
 
int __ext4_handle_dirty_super(const char *where, unsigned int line,
                  handle_t *handle, struct super_block *sb);
 
int __ext4_journal_get_write_access(const char *where, unsigned int line,
                    void *icb, handle_t *handle, struct buffer_head *bh);
 
int __ext4_forget(const char *where, unsigned int line, void *icb, handle_t *handle,
          int is_metadata, struct inode *inode,
          struct buffer_head *bh, ext4_fsblk_t blocknr);
 
int __ext4_journal_get_create_access(const char *where, unsigned int line,
                void *icb, handle_t *handle, struct buffer_head *bh);
 
int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
                 void *icb, handle_t *handle, struct inode *inode,
                 struct buffer_head *bh);
 
#define ext4_journal_get_write_access(handle, icb, bh) \
    __ext4_journal_get_write_access("", __LINE__, (icb), (handle), (bh))
#define ext4_forget(handle, icb, is_metadata, inode, bh, block_nr) \
    __ext4_forget("", __LINE__, (icb), (handle), (is_metadata), (inode), \
              (bh), (block_nr))
#define ext4_journal_get_create_access(handle, icb, bh) \
    __ext4_journal_get_create_access("", __LINE__, (icb), (handle), (bh))
#define ext4_handle_dirty_metadata(handle, icb, inode, bh) \
    __ext4_handle_dirty_metadata("", __LINE__, (icb), (handle), (inode), \
                     (bh))
 
handle_t *__ext4_journal_start_sb(void *icb, struct super_block *sb, unsigned int line,
                  int type, int blocks, int rsv_blocks);
int __ext4_journal_stop(const char *where, unsigned int line, void *icb, handle_t *handle);
 
#define ext4_journal_start_sb(icb, sb, type, nblocks)           \
    __ext4_journal_start_sb((icb), (sb), __LINE__, (type), (nblocks), 0)
 
#define ext4_journal_start(icb, inode, type, nblocks)           \
    __ext4_journal_start((icb), (inode), __LINE__, (type), (nblocks), 0)
 
static inline handle_t *__ext4_journal_start(void *icb, struct inode *inode,
                         unsigned int line, int type,
                         int blocks, int rsv_blocks)
{
    return __ext4_journal_start_sb(icb, inode->i_sb, line, type, blocks,
                       rsv_blocks);
}
 
#define ext4_journal_stop(icb, handle) \
    __ext4_journal_stop("", __LINE__, (icb), (handle))
 
static inline int ext4_journal_extend(void *icb, handle_t *handle, int nblocks)
{
    return 0;
}
 
#endif