diff options
| author | Steve French <smfrench@gmail.com> | 2016-09-23 01:58:16 +0200 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2016-10-12 19:08:32 +0200 |
| commit | 3afca265b5f53a0b15b79531c13858049505582d (patch) | |
| tree | ac9c7c97ee38fb4c156731643120833c5e53f63c /fs/cifs/cifssmb.c | |
| parent | Fix regression which breaks DFS mounting (diff) | |
| download | linux-3afca265b5f53a0b15b79531c13858049505582d.tar.xz linux-3afca265b5f53a0b15b79531c13858049505582d.zip | |
Clarify locking of cifs file and tcon structures and make more granular
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).
CC: Stable <stable@vger.kernel.org>
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>
Diffstat (limited to 'fs/cifs/cifssmb.c')
| -rw-r--r-- | fs/cifs/cifssmb.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index f82d2823622f..3f3185febc58 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -98,13 +98,13 @@ cifs_mark_open_files_invalid(struct cifs_tcon *tcon) struct list_head *tmp1; /* list all files open on tree connection and mark them invalid */ - spin_lock(&cifs_file_list_lock); + spin_lock(&tcon->open_file_lock); list_for_each_safe(tmp, tmp1, &tcon->openFileList) { open_file = list_entry(tmp, struct cifsFileInfo, tlist); open_file->invalidHandle = true; open_file->oplock_break_cancelled = true; } - spin_unlock(&cifs_file_list_lock); + spin_unlock(&tcon->open_file_lock); /* * BB Add call to invalidate_inodes(sb) for all superblocks mounted * to this tcon. |