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| author | Jeff Layton <jlayton@redhat.com> | 2008-12-01 07:09:35 -0500 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2008-12-26 02:29:09 +0000 |
| commit | 0468a2cf914e79442b8309ce62e3f861599d8cab (patch) | |
| tree | 93f4055fbbe3a9c740c4c272f684b9c89dd25e11 /fs | |
| parent | 80909022ce966191e6140fcc15d8aff57a7df32e (diff) | |
| download | linux-0468a2cf914e79442b8309ce62e3f861599d8cab.tar.gz linux-0468a2cf914e79442b8309ce62e3f861599d8cab.tar.bz2 linux-0468a2cf914e79442b8309ce62e3f861599d8cab.zip | |
cifs: take module reference when starting cifsd
cifsd can outlive the last cifs mount. We need to hold a module
reference until it exits to prevent someone from unplugging
the module until we're ready.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/connect.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index c7d341714586..701daf411a4b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -776,7 +776,7 @@ multi_t2_fnd: set_current_state(TASK_RUNNING); } - return 0; + module_put_and_exit(0); } /* extract the host portion of the UNC string */ @@ -2176,10 +2176,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, so no need to spinlock this init of tcpStatus */ srvTcp->tcpStatus = CifsNew; init_MUTEX(&srvTcp->tcpSem); + + /* + * since we're in a cifs function already, we know that + * this will succeed. No need for try_module_get(). + */ + __module_get(THIS_MODULE); srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); if (IS_ERR(srvTcp->tsk)) { rc = PTR_ERR(srvTcp->tsk); cERROR(1, ("error %d create cifsd thread", rc)); + module_put(THIS_MODULE); srvTcp->tsk = NULL; sock_release(csocket); kfree(srvTcp->hostname); |