diff options
| -rw-r--r-- | fs/cifs/connect.c | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index f51b79a67e1b..71b7661e2260 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 */ |