Revert "lockd: Show pid of lockd for remote locks"

This reverts most of commit b8eee0e90f97 ("lockd: Show pid of lockd for
remote locks"), which caused remote locks to not be differentiated between
remote processes for NLM.

We retain the fixup for setting the client's fl_pid to a negative value.

Fixes: b8eee0e90f97 ("lockd: Show pid of lockd for remote locks")
Cc: stable@vger.kernel.org

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: XueWei Zhang <xueweiz@google.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

2 files changed, 4 insertions, 4 deletions

diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 9846f7e95282..7147e4aebecc 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -127,7 +127,7 @@ nlm_decode_lock(__be32 *p, struct nlm_lock *lock)
 
         locks_init_lock(fl);
         fl->fl_owner = current->files;
-        fl->fl_pid   = current->tgid;
+        fl->fl_pid   = (pid_t)lock->svid;
         fl->fl_flags = FL_POSIX;
         fl->fl_type  = F_RDLCK;         /* as good as anything else */
         start = ntohl(*p++);
@@ -269,7 +269,7 @@ nlmsvc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
         memset(lock, 0, sizeof(*lock));
         locks_init_lock(&lock->fl);
         lock->svid = ~(u32) 0;
-        lock->fl.fl_pid = current->tgid;
+        lock->fl.fl_pid = (pid_t)lock->svid;
 
         if (!(p = nlm_decode_cookie(p, &argp->cookie))
          || !(p = xdr_decode_string_inplace(p, &lock->caller,
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c
index 70154f376695..7ed9edf9aed4 100644
--- a/fs/lockd/xdr4.c
+++ b/fs/lockd/xdr4.c
@@ -119,7 +119,7 @@ nlm4_decode_lock(__be32 *p, struct nlm_lock *lock)
 
         locks_init_lock(fl);
         fl->fl_owner = current->files;
-        fl->fl_pid   = current->tgid;
+        fl->fl_pid   = (pid_t)lock->svid;
         fl->fl_flags = FL_POSIX;
         fl->fl_type  = F_RDLCK;         /* as good as anything else */
         p = xdr_decode_hyper(p, &start);
@@ -266,7 +266,7 @@ nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
         memset(lock, 0, sizeof(*lock));
         locks_init_lock(&lock->fl);
         lock->svid = ~(u32) 0;
-        lock->fl.fl_pid = current->tgid;
+        lock->fl.fl_pid = (pid_t)lock->svid;
 
         if (!(p = nlm4_decode_cookie(p, &argp->cookie))
          || !(p = xdr_decode_string_inplace(p, &lock->caller,