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authorJeff Layton <jlayton@redhat.com>2009-03-23 01:47:12 -0400
committerSteve French <sfrench@us.ibm.com>2009-04-17 01:26:49 +0000
commit5144ebf408ed08380917126493450ee22e63fe3f (patch)
tree29585aa19f99fda7a47efbda4f418765e6db3b9f
parent2d6d589d8009b37ae03244059c93e0e8cf46910e (diff)
downloadvexpress-lsk-5144ebf408ed08380917126493450ee22e63fe3f.tar.gz
cifs: remove dnotify thread code
cifs: remove dnotify thread code Al Viro recently removed the dir_notify code from the kernel along with the CIFS code that used it. We can also get rid of the dnotify thread as well. In actuality, it never had anything to do with dir_notify anyway. All it did was unnecessarily wake up all the tasks waiting on the response queues every 15s. Previously that happened to prevent tasks from hanging indefinitely when the server went unresponsive, but we put those to sleep with proper timeouts now so there's no reason to keep this around. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
-rw-r--r--fs/cifs/cifsfs.c47
1 files changed, 0 insertions, 47 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 34f5701d955..0d6d8b57365 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -66,9 +66,6 @@ unsigned int sign_CIFS_PDUs = 1;
extern struct task_struct *oplockThread; /* remove sparse warning */
struct task_struct *oplockThread = NULL;
/* extern struct task_struct * dnotifyThread; remove sparse warning */
-#ifdef CONFIG_CIFS_EXPERIMENTAL
-static struct task_struct *dnotifyThread = NULL;
-#endif
static const struct super_operations cifs_super_ops;
unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
module_param(CIFSMaxBufSize, int, 0);
@@ -1041,34 +1038,6 @@ static int cifs_oplock_thread(void *dummyarg)
return 0;
}
-#ifdef CONFIG_CIFS_EXPERIMENTAL
-static int cifs_dnotify_thread(void *dummyarg)
-{
- struct list_head *tmp;
- struct TCP_Server_Info *server;
-
- do {
- if (try_to_freeze())
- continue;
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(15*HZ);
- /* check if any stuck requests that need
- to be woken up and wakeq so the
- thread can wake up and error out */
- read_lock(&cifs_tcp_ses_lock);
- list_for_each(tmp, &cifs_tcp_ses_list) {
- server = list_entry(tmp, struct TCP_Server_Info,
- tcp_ses_list);
- if (atomic_read(&server->inFlight))
- wake_up_all(&server->response_q);
- }
- read_unlock(&cifs_tcp_ses_lock);
- } while (!kthread_should_stop());
-
- return 0;
-}
-#endif
-
static int __init
init_cifs(void)
{
@@ -1145,21 +1114,8 @@ init_cifs(void)
goto out_unregister_dfs_key_type;
}
-#ifdef CONFIG_CIFS_EXPERIMENTAL
- dnotifyThread = kthread_run(cifs_dnotify_thread, NULL, "cifsdnotifyd");
- if (IS_ERR(dnotifyThread)) {
- rc = PTR_ERR(dnotifyThread);
- cERROR(1, ("error %d create dnotify thread", rc));
- goto out_stop_oplock_thread;
- }
-#endif
-
return 0;
-#ifdef CONFIG_CIFS_EXPERIMENTAL
- out_stop_oplock_thread:
-#endif
- kthread_stop(oplockThread);
out_unregister_dfs_key_type:
#ifdef CONFIG_CIFS_DFS_UPCALL
unregister_key_type(&key_type_dns_resolver);
@@ -1197,9 +1153,6 @@ exit_cifs(void)
cifs_destroy_inodecache();
cifs_destroy_mids();
cifs_destroy_request_bufs();
-#ifdef CONFIG_CIFS_EXPERIMENTAL
- kthread_stop(dnotifyThread);
-#endif
kthread_stop(oplockThread);
}