Lines Matching defs:upper
41 * Before encoding a non-upper directory file handle from real layer N, we need
53 * copied up and renamed, upper dir /a will be indexed by lower dir /a from
93 /* We can get upper/overlay path from indexed/lower dentry */
158 * encoding also after copy up. If non-pure upper is not indexed, then it was
160 * about staying consistent with pre copy up encoding and we encode an upper
161 * file handle. Overlay root dentry is a private case of non-indexed upper.
168 * Pure upper | U
169 * Non-indexed upper | U
170 * Indexed upper | L (*)
171 * Non-upper | L (*)
173 * U = upper file handle
181 * Return 0 for upper file handle, > 0 for lower file handle or < 0 on error.
187 /* Upper file handle for pure upper */
192 * Upper file handle for non-indexed upper.
194 * Root is never indexed, so if there's an upper layer, encode upper for
203 * lower dir or under a non-indexed upper is not always possible.
210 /* Lower file handle for indexed and non-upper dir/non-dir */
221 * Check if we should encode a lower or upper file handle and maybe
228 /* Encode an upper or lower file handle */
284 struct dentry *upper = upper_alias ?: index;
295 if (d_is_dir(upper ?: lower))
298 oip.upperdentry = dget(upper);
301 dput(upper);
305 if (upper)
327 ovl_dentry_init_reval(dentry, upper);
339 /* Get the upper or lower dentry in stach whose on layer @idx */
358 * dentry is @real. If @real is on upper layer, we lookup a child overlay
435 * Decoding upper dir from index is expensive, so first try to lookup
456 /* Get connected upper overlay dir from index */
458 struct dentry *upper = ovl_index_upper(ofs, index);
461 if (IS_ERR_OR_NULL(upper))
462 return upper;
466 * ovl_lookup_real() in upper layer. The first level call walks
468 * recursive call walks back from indexed upper to the topmost
469 * connected/hashed upper parent (or up to root).
471 this = ovl_lookup_real(sb, upper, &ofs->layers[0]);
472 dput(upper);
540 * If @real is on upper layer, we lookup a child overlay dentry with the same
643 * Get an overlay dentry from upper/lower real dentries and index.
646 struct dentry *upper,
651 const struct ovl_layer *layer = upper ? &ofs->layers[0] : lowerpath->layer;
652 struct dentry *real = upper ?: (index ?: lowerpath->dentry);
659 return ovl_obtain_alias(sb, upper, lowerpath, index);
677 struct dentry *upper;
682 upper = ovl_decode_real_fh(fh, ovl_upper_mnt(ofs), true);
683 if (IS_ERR_OR_NULL(upper))
684 return upper;
686 dentry = ovl_get_dentry(sb, upper, NULL, NULL);
687 dput(upper);
722 /* Then lookup indexed upper/whiteout by origin fh */
732 /* Then try to get a connected upper dir by index */
734 struct dentry *upper = ovl_index_upper(ofs, index);
736 err = PTR_ERR(upper);
737 if (IS_ERR_OR_NULL(upper))
740 dentry = ovl_get_dentry(sb, upper, NULL, NULL);
741 dput(upper);
759 /* Get a connected non-upper dir or disconnected non-dir */