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-rw-r--r--fs/cifs/connect.c41
1 files changed, 28 insertions, 13 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index f51b79a67e1..71b7661e226 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -750,6 +750,7 @@ multi_t2_fnd:
write_unlock(&GlobalSMBSeslock);
kfree(server->hostname);
+ task_to_wake = xchg(&server->tsk, NULL);
kfree(server);
length = atomic_dec_return(&tcpSesAllocCount);
@@ -757,6 +758,16 @@ multi_t2_fnd:
mempool_resize(cifs_req_poolp, length + cifs_min_rcv,
GFP_KERNEL);
+ /* if server->tsk was NULL then wait for a signal before exiting */
+ if (!task_to_wake) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ while (!signal_pending(current)) {
+ schedule();
+ set_current_state(TASK_INTERRUPTIBLE);
+ }
+ set_current_state(TASK_RUNNING);
+ }
+
return 0;
}
@@ -1846,6 +1857,16 @@ convert_delimiter(char *path, char delim)
}
}
+static void
+kill_cifsd(struct TCP_Server_Info *server)
+{
+ struct task_struct *task;
+
+ task = xchg(&server->tsk, NULL);
+ if (task)
+ force_sig(SIGKILL, task);
+}
+
int
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
char *mount_data, const char *devname)
@@ -2233,7 +2254,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
spin_lock(&GlobalMid_Lock);
srvTcp->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
- force_sig(SIGKILL, srvTcp->tsk);
+ kill_cifsd(srvTcp);
}
/* If find_unc succeeded then rc == 0 so we can not end */
if (tcon) /* up accidently freeing someone elses tcon struct */
@@ -2246,19 +2267,15 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
temp_rc = CIFSSMBLogoff(xid, pSesInfo);
/* if the socketUseCount is now zero */
if ((temp_rc == -ESHUTDOWN) &&
- (pSesInfo->server) &&
- (pSesInfo->server->tsk))
- force_sig(SIGKILL,
- pSesInfo->server->tsk);
+ (pSesInfo->server))
+ kill_cifsd(pSesInfo->server);
} else {
cFYI(1, ("No session or bad tcon"));
- if ((pSesInfo->server) &&
- (pSesInfo->server->tsk)) {
+ if (pSesInfo->server) {
spin_lock(&GlobalMid_Lock);
srvTcp->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
- force_sig(SIGKILL,
- pSesInfo->server->tsk);
+ kill_cifsd(pSesInfo->server);
}
}
sesInfoFree(pSesInfo);
@@ -3545,7 +3562,6 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
int rc = 0;
int xid;
struct cifsSesInfo *ses = NULL;
- struct task_struct *cifsd_task;
char *tmp;
xid = GetXid();
@@ -3561,7 +3577,6 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
tconInfoFree(cifs_sb->tcon);
if ((ses) && (ses->server)) {
/* save off task so we do not refer to ses later */
- cifsd_task = ses->server->tsk;
cFYI(1, ("About to do SMBLogoff "));
rc = CIFSSMBLogoff(xid, ses);
if (rc == -EBUSY) {
@@ -3569,8 +3584,8 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
return 0;
} else if (rc == -ESHUTDOWN) {
cFYI(1, ("Waking up socket by sending signal"));
- if (cifsd_task)
- force_sig(SIGKILL, cifsd_task);
+ if (ses->server)
+ kill_cifsd(ses->server);
rc = 0;
} /* else - we have an smb session
left on this socket do not kill cifsd */