const char *npath;
if (tcon == NULL || tcon->cfids == NULL || tcon->nohandlecache ||
- is_smb1_server(tcon->ses->server))
+ is_smb1_server(tcon->ses->server) || (dir_cache_timeout == 0))
return -EOPNOTSUPP;
ses = tcon->ses;
return 0;
spin_lock(&cfids->cfid_list_lock);
list_for_each_entry_safe(cfid, q, &cfids->entries, entry) {
- if (time_after(jiffies, cfid->time + HZ * 30)) {
+ if (time_after(jiffies, cfid->time + HZ * dir_cache_timeout)) {
list_del(&cfid->entry);
list_add(&cfid->entry, &entry);
cfids->num_entries--;
MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server for "
"CIFS/SMB1 dialect (N/A for SMB3) "
"Default: 32767 Range: 2 to 32767.");
+unsigned int dir_cache_timeout = 30;
+module_param(dir_cache_timeout, uint, 0644);
+MODULE_PARM_DESC(dir_cache_timeout, "Number of seconds to cache directory contents for which we have a lease. Default: 30 "
+ "Range: 1 to 65000 seconds, 0 to disable caching dir contents");
#ifdef CONFIG_CIFS_STATS2
unsigned int slow_rsp_threshold = 1;
module_param(slow_rsp_threshold, uint, 0644);
CIFS_MAX_REQ);
}
+ /* Limit max to about 18 hours, and setting to zero disables directory entry caching */
+ if (dir_cache_timeout > 65000) {
+ dir_cache_timeout = 65000;
+ cifs_dbg(VFS, "dir_cache_timeout set to max of 65000 seconds\n");
+ }
+
cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
if (!cifsiod_wq) {
rc = -ENOMEM;
extern unsigned int cifs_min_rcv; /* min size of big ntwrk buf pool */
extern unsigned int cifs_min_small; /* min size of small buf pool */
extern unsigned int cifs_max_pending; /* MAX requests at once to server*/
+extern unsigned int dir_cache_timeout; /* max time for directory lease caching of dir */
extern bool disable_legacy_dialects; /* forbid vers=1.0 and vers=2.0 mounts */
extern atomic_t mid_count;