linux-kernel - [PATCH 4/5] gfs2: Mark flock glock holders as GL

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Date:   Tue, 28 Jun 2022 22:46:10 +0200
From:   Andreas Gruenbacher <agruenba@...hat.com>
To:     cluster-devel@...hat.com
Cc:     Andreas Gruenbacher <agruenba@...hat.com>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        "Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH 4/5] gfs2: Mark flock glock holders as GL_NOPID

Add the GL_NOPID flag for flock glock holders.  Clean up the flag
setting code in do_flock.

Signed-off-by: Andreas Gruenbacher <agruenba@...hat.com>
---
 fs/gfs2/file.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 25f4080bc973..1383f9598011 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -1472,7 +1472,9 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
 	int sleeptime;
 
 	state = (fl->fl_type == F_WRLCK) ? LM_ST_EXCLUSIVE : LM_ST_SHARED;
-	flags = (IS_SETLKW(cmd) ? 0 : LM_FLAG_TRY_1CB) | GL_EXACT;
+	flags = GL_EXACT | GL_NOPID;
+	if (!IS_SETLKW(cmd))
+		flags |= LM_FLAG_TRY_1CB;
 
 	mutex_lock(&fp->f_fl_mutex);
 
@@ -1500,7 +1502,8 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
 		error = gfs2_glock_nq(fl_gh);
 		if (error != GLR_TRYFAILED)
 			break;
-		fl_gh->gh_flags = LM_FLAG_TRY | GL_EXACT;
+		fl_gh->gh_flags &= ~LM_FLAG_TRY_1CB;
+		fl_gh->gh_flags |= LM_FLAG_TRY;
 		msleep(sleeptime);
 	}
 	if (error) {
-- 
2.35.1