/* make sure the file is idle */
static int au_mvd_args_busy(const unsigned char dmsg, struct au_mvd_args *a)
{
int err, plinked;
err = 0;
plinked = !!au_opt_test(au_mntflags(a->sb), PLINK);
if (au_dbstart(a->dentry) == a->mvd_bsrc
&& au_dcount(a->dentry) == 1
&& atomic_read(&a->inode->i_count) == 1
/* && a->mvd_h_src_inode->i_nlink == 1 */
&& (!plinked || !au_plink_test(a->inode))
&& a->inode->i_nlink == 1)
goto out;
err = -EBUSY;
AU_MVD_PR(dmsg,
"b%d, d{b%d, c%d?}, i{c%d?, l%u}, hi{l%u}, p{%d, %d}\n",
a->mvd_bsrc, au_dbstart(a->dentry), au_dcount(a->dentry),
atomic_read(&a->inode->i_count), a->inode->i_nlink,
a->mvd_h_src_inode->i_nlink,
plinked, plinked ? au_plink_test(a->inode) : 0);
out:
AuTraceErr(err);
return err;
}
struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex)
{
struct dentry *d;
DiMustAnyLock(dentry);
if (au_dbstart(dentry) < 0 || bindex < au_dbstart(dentry))
return NULL;
AuDebugOn(bindex < 0);
d = au_di(dentry)->di_hdentry[0 + bindex].hd_dentry;
AuDebugOn(d && au_dcount(d) <= 0);
return d;
}
