[RFC PATCH v2 5/5] locks: report l_pid as -1 for FL_FILP_PRIVATE locks

[Jeff Layton <jlayton@redhat.com>]

FL_FILP_PRIVATE locks are no longer tied to a particular PID, and are
instead inheritable by child processes. Report a l_pid of '-1' for
these sorts of locks since the pid is somewhat meaningless for them.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
---
 fs/locks.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/locks.c b/fs/locks.c
index d5fb853..8a4d4e4 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1889,7 +1889,7 @@ EXPORT_SYMBOL_GPL(vfs_test_lock);
 
 static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl)
 {
-	flock->l_pid = fl->fl_pid;
+	flock->l_pid = IS_FILP_PVT(fl) ? -1 : fl->fl_pid;
 #if BITS_PER_LONG == 32
 	/*
 	 * Make sure we can represent the posix lock via
@@ -1911,7 +1911,7 @@ static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl)
 #if BITS_PER_LONG == 32
 static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl)
 {
-	flock->l_pid = fl->fl_pid;
+	flock->l_pid = IS_FILP_PVT(fl) ? -1 : fl->fl_pid;
 	flock->l_start = fl->fl_start;
 	flock->l_len = fl->fl_end == OFFSET_MAX ? 0 :
 		fl->fl_end - fl->fl_start + 1;
-- 
1.8.3.1