34 	struct dentry *real = NULL, *lower;  in ovl_d_real()  local
65 	lower = ovl_dentry_lowerdata(dentry);  in ovl_d_real()
66 	if (!lower)  in ovl_d_real()
68 	real = lower;  in ovl_d_real()
421 	/* Check if lower fs has 32bit inode numbers */  in ovl_lower_dir()
524  * attempted to be used as a lower layer in a new overlay mount.
548 		pr_err("upper fs is r/o, try multi-lower layers mount\n");  in ovl_get_upper()
888 	/* Verify lower root is upper root origin */  in ovl_get_indexdir()
953 	 * We allow using single lower with null uuid for index and nfs_export  in ovl_lower_uuid_ok()
954 	 * for example to support those features with single lower squashfs.  in ovl_lower_uuid_ok()
955 	 * To avoid regressions in setups of overlay with re-formatted lower  in ovl_lower_uuid_ok()
956 	 * squashfs, do not allow decoding origin with lower null uuid unless  in ovl_lower_uuid_ok()
958 	 * lower inode of non-dir upper.  in ovl_lower_uuid_ok()
965 		 * We use uuid to associate an overlay lower file handle with a  in ovl_lower_uuid_ok()
966 		 * lower layer, so we can accept lower fs with null uuid as long  in ovl_lower_uuid_ok()
967 		 * as all lower layers with null uuid are on the same fs.  in ovl_lower_uuid_ok()
968 		 * if we detect multiple lower fs with the same uuid, we  in ovl_lower_uuid_ok()
969 		 * disable lower file handle decoding on all of them.  in ovl_lower_uuid_ok()
1007 …pr_warn("%s uuid detected in lower fs '%pd2', falling back to xino=%s,index=off,nfs_export=off.\n",  in ovl_get_fsid()
1028  * The fsid after the last lower fsid is used for the data layers.
1049 	 * idx/fsid 0 are reserved for upper fs even with lower only overlay  in ovl_get_layers()
1055 	 * All lower layers that share the same fs as upper layer, use the same  in ovl_get_layers()
1056 	 * pseudo_dev as upper layer.  Allocate fs[0].pseudo_dev even for lower  in ovl_get_layers()
1058 	 * is_lower will be set if upper fs is shared with a lower layer.  in ovl_get_layers()
1073 		struct ovl_fs_context_layer *l = &ctx->lower[i];  in ovl_get_layers()
1086 		 * Check if lower root conflicts with this overlay layers before  in ovl_get_layers()
1113 		 * Make lower layers R/O.  That way fchmod/fchown on lower file  in ovl_get_layers()
1114 		 * will fail instead of modifying lower fs.  in ovl_get_layers()
1149 		 * lower only overlay) +1 extra bit is reserved for the non  in ovl_get_layers()
1151 		 * xino lower bits overflow.  in ovl_get_layers()
1185 		l = &ctx->lower[i];  in ovl_get_lowerstack()
1212 		l = &ctx->lower[i];  in ovl_get_lowerstack()
1439 		pr_warn("The uuid=off requires a single fs for lower and upper, falling back to uuid=null.\n");  in ovl_fill_super()