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authorJeff Layton <jlayton@poochiereds.net>2016-05-24 06:27:44 -0400
committerSteve French <smfrench@gmail.com>2016-06-23 23:44:44 -0500
commit3d22462ae915743f3be5bf1ab3d4a6b72c2bb6c9 (patch)
treec72abbba49e16521c490a8981282dc5919eee402 /fs/cifs/cifsfs.c
parentda01e18a37a57f360222d3a123b8f6994aa1ad14 (diff)
downloadlinux-3d22462ae915743f3be5bf1ab3d4a6b72c2bb6c9.tar.bz2
cifs: stuff the fl_owner into "pid" field in the lock request
Right now, we send the tgid cross the wire. What we really want to send though is a hashed fl_owner_t since samba treats this field as a generic lockowner. It turns out that because we enforce and release locks locally before they are ever sent to the server, this patch makes no difference in behavior. Still, setting OFD locks on the server using the process pid seems wrong, so I think this patch still makes sense. Signed-off-by: Jeff Layton <jlayton@poochiereds.net> Signed-off-by: Steve French <smfrench@gmail.com> Acked-by: Pavel Shilovsky <pshilovsky@samba.org> Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Diffstat (limited to 'fs/cifs/cifsfs.c')
-rw-r--r--fs/cifs/cifsfs.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 5d8b7edf8a8f..5d841f39c4b7 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -87,6 +87,7 @@ extern mempool_t *cifs_req_poolp;
extern mempool_t *cifs_mid_poolp;
struct workqueue_struct *cifsiod_wq;
+__u32 cifs_lock_secret;
/*
* Bumps refcount for cifs super block.
@@ -1266,6 +1267,8 @@ init_cifs(void)
spin_lock_init(&cifs_file_list_lock);
spin_lock_init(&GlobalMid_Lock);
+ get_random_bytes(&cifs_lock_secret, sizeof(cifs_lock_secret));
+
if (cifs_max_pending < 2) {
cifs_max_pending = 2;
cifs_dbg(FYI, "cifs_max_pending set to min of 2\n");