int au_reval_dpath(struct dentry *dentry, unsigned int sigen) { int err; struct dentry *d, *parent; struct inode *inode; if (!au_ftest_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIRS)) return simple_reval_dpath(dentry, sigen); /* slow loop, keep it simple and stupid */ /* cf: au_cpup_dirs() */ err = 0; parent = NULL; while (au_digen(dentry) != sigen || au_iigen(dentry->d_inode) != sigen) { d = dentry; while (1) { dput(parent); parent = dget_parent(d); if (au_digen(parent) == sigen && au_iigen(parent->d_inode) == sigen) break; d = parent; } inode = d->d_inode; if (d != dentry) di_write_lock_child(d); /* someone might update our dentry while we were sleeping */ if (au_digen(d) != sigen || au_iigen(d->d_inode) != sigen) { di_read_lock_parent(parent, AuLock_IR); /* returns a number of positive dentries */ err = au_refresh_hdentry(d, inode->i_mode & S_IFMT); if (err >= 0) err = au_refresh_hinode(inode, d); di_read_unlock(parent, AuLock_IR); } if (d != dentry) di_write_unlock(d); dput(parent); if (unlikely(err)) break; } return err; }
int au_reval_dpath(struct dentry *dentry, unsigned int sigen) { int err; struct dentry *d, *parent; struct inode *inode; if (!au_ftest_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR)) return simple_reval_dpath(dentry, sigen); /* slow loop, keep it simple and stupid */ /* cf: au_cpup_dirs() */ err = 0; parent = NULL; while (au_digen_test(dentry, sigen)) { d = dentry; while (1) { dput(parent); parent = dget_parent(d); if (!au_digen_test(parent, sigen)) break; d = parent; } inode = d->d_inode; if (d != dentry) di_write_lock_child2(d); /* someone might update our dentry while we were sleeping */ if (au_digen_test(d, sigen)) { /* * todo: consolidate with simple_reval_dpath(), * do_refresh() and au_reval_for_attr(). */ di_read_lock_parent(parent, AuLock_IR); err = au_refresh_dentry(d, parent); di_read_unlock(parent, AuLock_IR); } if (d != dentry) di_write_unlock(d); dput(parent); if (unlikely(err)) break; } return err; }