diff options
| author | Paulo Alcantara <pc@cjr.nz> | 2021-06-04 19:25:32 -0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2021-06-20 21:28:17 -0500 |
| commit | c950fc7af9a7c20b60d7c1ffe5fd4d982ec8cd6c (patch) | |
| tree | 80a23f61ea944deed111556ae74d2e579aef9e0a /fs/cifs/dfs_cache.c | |
| parent | 42caeba713b12ee0dfc085f6fb2f7cde2a64f91a (diff) | |
| download | linux-c950fc7af9a7c20b60d7c1ffe5fd4d982ec8cd6c.tar.bz2 | |
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: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/dfs_cache.c')
| -rw-r--r-- | fs/cifs/dfs_cache.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c index 66be23975aec..d9c2c75a2989 100644 --- a/fs/cifs/dfs_cache.c +++ b/fs/cifs/dfs_cache.c @@ -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; |