Commit d7b619cf authored by Steve French's avatar Steve French
Browse files

[CIFS] pSesInfo->sesSem is used as mutex. Rename it to session_mutex and 


convert it to a real mutex.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarJeff Layton <jlayton@redhat.com>
Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
parent 122ca007

fs/cifs/cifsglob.h

+1 −1
Original line number Diff line number Diff line
@@ -205,7 +205,7 @@ struct cifsUidInfo { 
struct cifsSesInfo {

	struct list_head smb_ses_list;

	struct list_head tcon_list;

	struct semaphore sesSem;

	struct mutex session_mutex;

#if 0

	struct cifsUidInfo *uidInfo;	/* pointer to user info */

#endif

fs/cifs/cifssmb.c

+6 −6
Original line number Diff line number Diff line
@@ -170,19 +170,19 @@ cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command) 
	 * need to prevent multiple threads trying to simultaneously

	 * reconnect the same SMB session

	 */

	down(&ses->sesSem);

	mutex_lock(&ses->session_mutex);

	if (ses->need_reconnect)

		rc = cifs_setup_session(0, ses, nls_codepage);



	/* do we need to reconnect tcon? */

	if (rc || !tcon->need_reconnect) {

		up(&ses->sesSem);

		mutex_unlock(&ses->session_mutex);

		goto out;

	}



	mark_open_files_invalid(tcon);

	rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage);

	up(&ses->sesSem);

	mutex_unlock(&ses->session_mutex);

	cFYI(1, ("reconnect tcon rc = %d", rc));



	if (rc)
@@ -700,13 +700,13 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) 
	if (!ses || !ses->server)

		return -EIO;



	down(&ses->sesSem);

	mutex_lock(&ses->session_mutex);

	if (ses->need_reconnect)

		goto session_already_dead; /* no need to send SMBlogoff if uid

					      already closed due to reconnect */

	rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);

	if (rc) {

		up(&ses->sesSem);

		mutex_unlock(&ses->session_mutex);

		return rc;

	}
@@ -721,7 +721,7 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) 
	pSMB->AndXCommand = 0xFF;

	rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0);

session_already_dead:

	up(&ses->sesSem);

	mutex_unlock(&ses->session_mutex);



	/* if session dead then we do not need to do ulogoff,

		since server closed smb session, no sense reporting

fs/cifs/connect.c

+4 −4
Original line number Diff line number Diff line
@@ -2388,13 +2388,13 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, 
		 */

		cifs_put_tcp_session(srvTcp);



		down(&pSesInfo->sesSem);

		mutex_lock(&pSesInfo->session_mutex);

		if (pSesInfo->need_reconnect) {

			cFYI(1, ("Session needs reconnect"));

			rc = cifs_setup_session(xid, pSesInfo,

						cifs_sb->local_nls);

		}

		up(&pSesInfo->sesSem);

		mutex_unlock(&pSesInfo->session_mutex);

	} else if (!rc) {

		cFYI(1, ("Existing smb sess not found"));

		pSesInfo = sesInfoAlloc();
@@ -2437,12 +2437,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, 
		}

		pSesInfo->linux_uid = volume_info->linux_uid;

		pSesInfo->overrideSecFlg = volume_info->secFlg;

		down(&pSesInfo->sesSem);

		mutex_lock(&pSesInfo->session_mutex);



		/* BB FIXME need to pass vol->secFlgs BB */

		rc = cifs_setup_session(xid, pSesInfo,

					cifs_sb->local_nls);

		up(&pSesInfo->sesSem);

		mutex_unlock(&pSesInfo->session_mutex);

	}



	/* search for existing tcon to this server share */

fs/cifs/misc.c

+1 −1
Original line number Diff line number Diff line
@@ -79,7 +79,7 @@ sesInfoAlloc(void) 
		++ret_buf->ses_count;

		INIT_LIST_HEAD(&ret_buf->smb_ses_list);

		INIT_LIST_HEAD(&ret_buf->tcon_list);

		init_MUTEX(&ret_buf->sesSem);

		mutex_init(&ret_buf->session_mutex);

	}

	return ret_buf;

}