Commit c950fc7a authored by Paulo Alcantara's avatar Paulo Alcantara Committed by Steve French
Browse files

cifs: set a minimum of 2 minutes for refreshing dfs cache 



We don't want to refresh the dfs cache in very short intervals, so
setting a minimum interval of 2 minutes is OK.

If it needs to be refreshed immediately, one could have the cache
cleared with

	$ echo 0 > /proc/fs/cifs/dfscache

and then remounting the dfs share.

Signed-off-by: default avatarPaulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: default avatarAurelien Aptel <aaptel@suse.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 42caeba7

fs/cifs/dfs_cache.c

+2 −1
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 


#define CACHE_HTABLE_SIZE 32

#define CACHE_MAX_ENTRIES 64

#define CACHE_MIN_TTL 120 /* 2 minutes */



#define IS_INTERLINK_SET(v) ((v) & (DFSREF_REFERRAL_SERVER | \

				    DFSREF_STORAGE_SERVER))
@@ -492,7 +493,7 @@ static int copy_ref_data(const struct dfs_info3_param *refs, int numrefs, 
{

	int i;



	ce->ttl = refs[0].ttl;

	ce->ttl = max_t(int, refs[0].ttl, CACHE_MIN_TTL);

	ce->etime = get_expire_time(ce->ttl);

	ce->srvtype = refs[0].server_type;

	ce->hdr_flags = refs[0].flags;