diff options
| author | Steve French <smfrench@gmail.com> | 2016-09-22 18:58:16 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-28 03:01:32 -0400 |
| commit | ed3ccfea6c2b0d873d72ca7b7a250b7a747eac33 (patch) | |
| tree | e3f2ba2eac622a06c5e500bb19e274f071b3b5da /fs/cifs/cifsfs.c | |
| parent | 46d355f595c39fb8e57f7b1b8a7a5f0ae2a8040d (diff) | |
Clarify locking of cifs file and tcon structures and make more granular
commit 3afca265b5f53a0b15b79531c13858049505582d upstream.
Remove the global file_list_lock to simplify cifs/smb3 locking and
have spinlocks that more closely match the information they are
protecting.
Add new tcon->open_file_lock and file->file_info_lock spinlocks.
Locks continue to follow a heirachy,
cifs_socket --> cifs_ses --> cifs_tcon --> cifs_file
where global tcp_ses_lock still protects socket and cifs_ses, while the
the newer locks protect the lower level structure's information
(tcon and cifs_file respectively).
Signed-off-by: Steve French <steve.french@primarydata.com>
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Germano Percossi <germano.percossi@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/cifs/cifsfs.c')
| -rw-r--r-- | fs/cifs/cifsfs.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 88a284897503..a2156b564f0e 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -1210,7 +1210,6 @@ init_cifs(void) GlobalTotalActiveXid = 0; GlobalMaxActiveXid = 0; spin_lock_init(&cifs_tcp_ses_lock); - spin_lock_init(&cifs_file_list_lock); spin_lock_init(&GlobalMid_Lock); if (cifs_max_pending < 2) { |