Function zfs_rmnode

freebsd/contrib/openzfs/module/os/linux/zfs/zfs_dir.c:645–772

}

void
zfs_rmnode(znode_t *zp)
{
	zfsvfs_t	*zfsvfs = ZTOZSB(zp);
	objset_t	*os = zfsvfs->z_os;
	znode_t		*xzp = NULL;
	dmu_tx_t	*tx;
	uint64_t	acl_obj;
	uint64_t	xattr_obj;
	uint64_t	links;
	int		error;

	ASSERT(ZTOI(zp)->i_nlink == 0);
	ASSERT(atomic_read(&ZTOI(zp)->i_count) == 0);

	/*
	 * If this is an attribute directory, purge its contents.
	 */
	if (S_ISDIR(ZTOI(zp)->i_mode) && (zp->z_pflags & ZFS_XATTR)) {
		if (zfs_purgedir(zp) != 0) {
			/*
			 * Not enough space to delete some xattrs.
			 * Leave it in the unlinked set.
			 */
			zfs_znode_dmu_fini(zp);

			return;
		}
	}

	/*
	 * Free up all the data in the file.  We don't do this for directories
	 * because we need truncate and remove to be in the same tx, like in
	 * zfs_znode_delete(). Otherwise, if we crash here we'll end up with
	 * an inconsistent truncated zap object in the delete queue.  Note a
	 * truncated file is harmless since it only contains user data.
	 */
	if (S_ISREG(ZTOI(zp)->i_mode)) {
		error = dmu_free_long_range(os, zp->z_id, 0, DMU_OBJECT_END);
		if (error) {
			/*
			 * Not enough space or we were interrupted by unmount.
			 * Leave the file in the unlinked set.
			 */
			zfs_znode_dmu_fini(zp);
			return;
		}
	}

	/*
	 * If the file has extended attributes, we're going to unlink
	 * the xattr dir.
	 */
	error = sa_lookup(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs),
	    &xattr_obj, sizeof (xattr_obj));
	if (error == 0 && xattr_obj) {
		error = zfs_zget(zfsvfs, xattr_obj, &xzp);
		ASSERT(error == 0);