==> Regarding [autofs] [RFC:VFS] autofs4 needs to force fail return revalidate; Ian Kent <raven@xxxxxxxxxx> adds: raven> Hi all, raven> For a long time now I have had a problem with not being able to raven> return a lookup failure on an existsing directory. In autofs this raven> corresponds to a mount failure on a autofs managed mount entry that raven> is browsable (and so the mount point directory exists). raven> While this problem has been present for a long time I've avoided raven> resolving it because it was not very visible. But now that autofs v5 raven> has "mount and expire on demand" of nested multiple mounts, such as raven> is found when mounting an export list from a server, solving the raven> problem cannot be avoided any longer. raven> I've tried very hard to find a way to do this entirely within the raven> autofs4 module but have not been able to find a satisfactory way to raven> achieve it. raven> So, I need to propose a change to the VFS. raven> Please offer comments and suggestions or if anyone has an idea how raven> this could be done within the autofs4 filesystem then I'm all ears. > --- linux-2.6.17/include/linux/dcache.h.dcache-revalidate-return-fail 2006-06-19 13:26:27.000000000 +0800 > +++ linux-2.6.17/include/linux/dcache.h 2006-06-19 13:29:25.000000000 +0800 > @@ -163,6 +163,7 @@ d_iput: no no no yes > #define DCACHE_UNHASHED 0x0010 > #define DCACHE_INOTIFY_PARENT_WATCHED 0x0020 /* Parent inode is watched */ > +#define DCACHE_REVAL_FORCE_FAIL 0x0040 /* Force revalidate fail on valid dentry */ > extern spinlock_t dcache_lock; This looks like the right approach to me. I'd ack it. -Jeff - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
