Re: [PATCH 2/3] NFS: Add NFS_MOUNT_NONEGDE flag to avoid caching negative dentries

[Steve Dickson <SteveD@redhat.com>]

Trond Myklebust wrote:
> On Tue, 2008-01-15 at 20:22 -0500, Bob Bell wrote:
>>>> How about something like 'cacheneglookup' 'nocacheneglookup'? Better
>>>> suggestions, anyone?
>> As long as no one objects to the length, I'll go with "nocacheneglookup" 
>> (and NFS_MOUNT_NOCACHENEGLOOKUP, I suppose) for round 2.
> 
> I'm still not happy with that name. What do people think about
> introducing a generic 'cache' option that can be used for fine control
> of caching options?
> 
> I'm thinking somewhat along the lines of
> 
> 	-ocache=lookup_all		/* Cache all dentries */
> 	-ocache=lookup_positive		/* Cache positive dentries */
> 	-ocache=lookup_none		/* Force all lookups */
Maybe we should define the type of cache were are controlling, in case
we want to add controls for other caches. So how about:

        -olpcache=all        /* Cache all directory entries */
        -olpcache=found      /* Cache only directory entires that are found */
        -olpcache=off        /* Turn off the caching of directory entries */ 


steved.