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.
186 /* No upper layer? */ in ovl_check_encode_origin()
190 /* Lower file handle for non-upper non-decodable */ in ovl_check_encode_origin()
194 /* Upper file handle for pure upper */ in ovl_check_encode_origin()
199 * Root is never indexed, so if there's an upper layer, encode upper for in ovl_check_encode_origin()
206 * Upper decodable file handle for non-indexed upper. in ovl_check_encode_origin()
214 * lower dir or under a non-indexed upper is not always possible. in ovl_check_encode_origin()
230 /* Lower file handle for indexed and non-upper dir/non-dir */ in ovl_check_encode_origin()
242 * Check if we should encode a lower or upper file handle and maybe in ovl_dentry_to_fid()
249 /* Encode an upper or lower file handle */ in ovl_dentry_to_fid()
300 struct dentry *upper = upper_alias ?: index; in ovl_obtain_alias() local
308 if (d_is_dir(upper ?: lower)) in ovl_obtain_alias()
315 oip.upperdentry = dget(upper); in ovl_obtain_alias()
324 dput(upper); in ovl_obtain_alias()
328 if (upper) in ovl_obtain_alias()
334 /* Get the upper or lower dentry in stack whose on layer @idx */
354 * dentry is @real. If @real is on upper layer, we lookup a child overlay
436 * Decoding upper dir from index is expensive, so first try to lookup in ovl_lookup_real_inode()
457 /* Get connected upper overlay dir from index */ in ovl_lookup_real_inode()
459 struct dentry *upper = ovl_index_upper(ofs, index, true); in ovl_lookup_real_inode() local
462 if (IS_ERR_OR_NULL(upper)) in ovl_lookup_real_inode()
463 return upper; in ovl_lookup_real_inode()
467 * ovl_lookup_real() in upper layer. The first level call walks in ovl_lookup_real_inode()
469 * recursive call walks back from indexed upper to the topmost in ovl_lookup_real_inode()
470 * connected/hashed upper parent (or up to root). in ovl_lookup_real_inode()
472 this = ovl_lookup_real(sb, upper, &ofs->layers[0]); in ovl_lookup_real_inode()
473 dput(upper); in ovl_lookup_real_inode()
541 * If @real is on upper layer, we lookup a child overlay dentry with the same
644 * Get an overlay dentry from upper/lower real dentries and index.
647 struct dentry *upper, in ovl_get_dentry() argument
652 const struct ovl_layer *layer = upper ? &ofs->layers[0] : lowerpath->layer; in ovl_get_dentry()
653 struct dentry *real = upper ?: (index ?: lowerpath->dentry); in ovl_get_dentry()
660 return ovl_obtain_alias(sb, upper, lowerpath, index); in ovl_get_dentry()
678 struct dentry *upper; in ovl_upper_fh_to_d() local
683 upper = ovl_decode_real_fh(ofs, fh, ovl_upper_mnt(ofs), true); in ovl_upper_fh_to_d()
684 if (IS_ERR_OR_NULL(upper)) in ovl_upper_fh_to_d()
685 return upper; in ovl_upper_fh_to_d()
687 dentry = ovl_get_dentry(sb, upper, NULL, NULL); in ovl_upper_fh_to_d()
688 dput(upper); in ovl_upper_fh_to_d()
723 /* Then lookup indexed upper/whiteout by origin fh */ in ovl_lower_fh_to_d()
733 /* Then try to get a connected upper dir by index */ in ovl_lower_fh_to_d()
735 struct dentry *upper = ovl_index_upper(ofs, index, true); in ovl_lower_fh_to_d() local
737 err = PTR_ERR(upper); in ovl_lower_fh_to_d()
738 if (IS_ERR_OR_NULL(upper)) in ovl_lower_fh_to_d()
741 dentry = ovl_get_dentry(sb, upper, NULL, NULL); in ovl_lower_fh_to_d()
742 dput(upper); in ovl_lower_fh_to_d()
760 /* Get a connected non-upper dir or disconnected non-dir */ in ovl_lower_fh_to_d()