fs/overlayfs/export.c

55  * in ovl_lookup_real_ancestor() will not be able to lookup a connected overlay
65  * (*) the algorithm in ovl_lookup_real_ancestor() can be improved to lookup an
358  * Lookup a child overlay dentry to get a connected overlay dentry whose real
359  * dentry is @real. If @real is on upper layer, we lookup a child overlay
361  * index for lookup.
373 	 * Lookup child overlay dentry by real name. The dir mutex protects us  in ovl_lookup_real_one()
376 	 * connected overlay dir, we return -ECHILD and restart the lookup of  in ovl_lookup_real_one()
413 	pr_warn_ratelimited("failed to lookup one by real (%pd2, layer=%d, connected=%pd2, err=%i)\n",  in ovl_lookup_real_one()
424  * Lookup an indexed or hashed overlay dentry by real inode.
436 	 * Decoding upper dir from index is expensive, so first try to lookup  in ovl_lookup_real_inode()
448 	 * For decoded lower dir file handle, lookup index by origin to check  in ovl_lookup_real_inode()
488  * Lookup an indexed or hashed overlay dentry, whose real dentry is an
507 		 * Lookup a matching overlay dentry in inode/dentry  in ovl_lookup_real_ancestor()
540  * Lookup a connected overlay dentry whose real dentry is @real.
541  * If @real is on upper layer, we lookup a child overlay dentry with the same
542  * path the real dentry. Otherwise, we need to consult index for lookup.
607 			 * Lookup of child in overlay can fail when racing with  in ovl_lookup_real()
609 			 * In this case, we need to restart the lookup from the  in ovl_lookup_real()
614 			 * continue to connect exactly from where lookup failed.  in ovl_lookup_real()
637 	pr_warn_ratelimited("failed to lookup by real (%pd2, layer=%d, connected=%pd2, err=%i)\n",  in ovl_lookup_real()
704 	/* First lookup overlay inode in inode cache by origin fh */  in ovl_lower_fh_to_d()
723 	/* Then lookup indexed upper/whiteout by origin fh */  in ovl_lower_fh_to_d()