int start_jbd_tx(struct jbd_kstm_tx *j, int commit) {
int err = 0;
if(j->durable && j->nblocks > 0 && commit) {
struct _super_block *sb = tx_cache_get_super(j->sb);
#ifdef CONFIG_TX_KSTM_SYNC_DURABLE
journal_force_commit(EXT3_SB(j->sb)->s_journal);
#endif
#ifdef CONFIG_TX_KSTM_XJBD_DYNAMIC
j->handle =
ext3_journal_start_sb(parent(sb), JBD_DEFAULT_GUESS);
#else
/* Add a buffer credit for the superblock */
j->nblocks++;
j->handle =
ext3_journal_start_sb(parent(sb), j->nblocks);
#endif
if(IS_ERR(j->handle)) {
err = PTR_ERR(j->handle);
j->handle = NULL;
}
#ifdef CONFIG_TX_KSTM_XJBD
j->handle->h_extensible = 1;
#endif
/* Mark this handle synchronous: anything we put it in should get
* written to the log by the time we finish with journal_stop */
j->handle->h_sync = 1;
j->durable = TX_COMMITTING_DURABLE;
}
j->nblocks = 0;
return err;
}
static int ocfs2_sync_file(struct file *file,
struct dentry *dentry,
int datasync)
{
int err = 0;
journal_t *journal;
struct inode *inode = dentry->d_inode;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", file, dentry, datasync,
dentry->d_name.len, dentry->d_name.name);
err = ocfs2_sync_inode(dentry->d_inode);
if (err)
goto bail;
journal = osb->journal->j_journal;
err = journal_force_commit(journal);
bail:
mlog_exit(err);
return (err < 0) ? -EIO : 0;
}