Lines Matching full:upper
36 * Before encoding a non-upper directory file handle from real layer N, we need
48 * copied up and renamed, upper dir /a will be indexed by lower dir /a from
88 /* We can get upper/overlay path from indexed/lower dentry */ in ovl_connectable_layer()
154 * encoding also after copy up. If non-pure upper is not indexed, then it was
156 * about staying consistent with pre copy up encoding and we encode an upper
157 * file handle. Overlay root dentry is a private case of non-indexed upper.
164 * Pure upper | U
165 * Non-indexed upper | U
166 * Indexed upper | L (*)
167 * Non-upper | L (*)
169 * U = upper file handle
175 * of a decodable file handle for non-upper dir.
177 * Return 0 for upper file handle, > 0 for lower file handle or < 0 on error.
184 /* Lower file handle for non-upper non-decodable */ in ovl_check_encode_origin()
188 /* Upper file handle for pure upper */ in ovl_check_encode_origin()
193 * Root is never indexed, so if there's an upper layer, encode upper for in ovl_check_encode_origin()
200 * Upper decodable file handle for non-indexed upper. in ovl_check_encode_origin()
208 * lower dir or under a non-indexed upper is not always possible. in ovl_check_encode_origin()
215 /* Lower file handle for indexed and non-upper dir/non-dir */ in ovl_check_encode_origin()
227 * Check if we should encode a lower or upper file handle and maybe in ovl_dentry_to_fid()
234 /* Encode an upper or lower file handle */ in ovl_dentry_to_fid()
291 struct dentry *upper = upper_alias ?: index; in ovl_obtain_alias() local
299 if (d_is_dir(upper ?: lower)) in ovl_obtain_alias()
306 oip.upperdentry = dget(upper); in ovl_obtain_alias()
315 dput(upper); in ovl_obtain_alias()
319 if (upper) in ovl_obtain_alias()
325 /* Get the upper or lower dentry in stack whose on layer @idx */
345 * dentry is @real. If @real is on upper layer, we lookup a child overlay
427 * Decoding upper dir from index is expensive, so first try to lookup in ovl_lookup_real_inode()
448 /* Get connected upper overlay dir from index */ in ovl_lookup_real_inode()
450 struct dentry *upper = ovl_index_upper(ofs, index, true); in ovl_lookup_real_inode() local
453 if (IS_ERR_OR_NULL(upper)) in ovl_lookup_real_inode()
454 return upper; in ovl_lookup_real_inode()
458 * ovl_lookup_real() in upper layer. The first level call walks in ovl_lookup_real_inode()
460 * recursive call walks back from indexed upper to the topmost in ovl_lookup_real_inode()
461 * connected/hashed upper parent (or up to root). in ovl_lookup_real_inode()
463 this = ovl_lookup_real(sb, upper, &ofs->layers[0]); in ovl_lookup_real_inode()
464 dput(upper); in ovl_lookup_real_inode()
532 * If @real is on upper layer, we lookup a child overlay dentry with the same
635 * Get an overlay dentry from upper/lower real dentries and index.
638 struct dentry *upper, in ovl_get_dentry() argument
643 const struct ovl_layer *layer = upper ? &ofs->layers[0] : lowerpath->layer; in ovl_get_dentry()
644 struct dentry *real = upper ?: (index ?: lowerpath->dentry); in ovl_get_dentry()
651 return ovl_obtain_alias(sb, upper, lowerpath, index); in ovl_get_dentry()
669 struct dentry *upper; in ovl_upper_fh_to_d() local
674 upper = ovl_decode_real_fh(ofs, fh, ovl_upper_mnt(ofs), true); in ovl_upper_fh_to_d()
675 if (IS_ERR_OR_NULL(upper)) in ovl_upper_fh_to_d()
676 return upper; in ovl_upper_fh_to_d()
678 dentry = ovl_get_dentry(sb, upper, NULL, NULL); in ovl_upper_fh_to_d()
679 dput(upper); in ovl_upper_fh_to_d()
714 /* Then lookup indexed upper/whiteout by origin fh */ in ovl_lower_fh_to_d()
724 /* Then try to get a connected upper dir by index */ in ovl_lower_fh_to_d()
726 struct dentry *upper = ovl_index_upper(ofs, index, true); in ovl_lower_fh_to_d() local
728 err = PTR_ERR(upper); in ovl_lower_fh_to_d()
729 if (IS_ERR_OR_NULL(upper)) in ovl_lower_fh_to_d()
732 dentry = ovl_get_dentry(sb, upper, NULL, NULL); in ovl_lower_fh_to_d()
733 dput(upper); in ovl_lower_fh_to_d()
751 /* Get a connected non-upper dir or disconnected non-dir */ in ovl_lower_fh_to_d()