namei: Add a comment explaining ISRESTARTED flag

Reviewed by:		kib
Differential Revision:	https://reviews.freebsd.org/D40494

This commit is contained in:

Dmitry Chagin

2023-06-13 15:22:09 +03:00

parent 6a9cfebaf1

commit 861abdadf9

1 changed files with 5 additions and 0 deletions

									
										sys/kern/vfs_lookup.c
									
		+5
		
												View File
												
				@@ -81,6 +81,11 @@ static void NDVALIDATE_impl(struct nameidata *, int);

				#define NDVALIDATE(ndp)

				#endif

				/*

				 * Prepare namei() to restart. Reset components to its original state and set

				 * ISRESTARTED flag which signals the underlying lookup code to change the root

				 * from ABI root to actual root and prevents a further restarts.

				 */

				#define	NDRESTART(ndp) do {						\

					NDREINIT_DBG(ndp);						\

					ndp->ni_resflags = 0;						\