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Bruce Fields" Cc: kernel@openvz.org, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, Chuck Lever References: <1f354cec-d2d6-ddf5-56e0-325c10fe26ee@virtuozzo.com> Message-ID: <00d1e0fa-55dd-82a5-2607-70d4552cc7f4@virtuozzo.com> Date: Wed, 29 Dec 2021 11:24:43 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 In-Reply-To: <1f354cec-d2d6-ddf5-56e0-325c10fe26ee@virtuozzo.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-ClientProxiedBy: AS9PR06CA0077.eurprd06.prod.outlook.com (2603:10a6:20b:464::24) To AM9PR08MB6241.eurprd08.prod.outlook.com (2603:10a6:20b:281::21) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 335ad032-8c13-42b0-d944-08d9caa4aaf6 X-MS-TrafficTypeDiagnostic: AM0PR08MB2964:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3276; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Currently nfs4 use locks_lock_inode_wait() function which is blocked for such requests. To handle them correctly FL_SLEEP flag should be temporarily reset before executing the locks_lock_inode_wait() function. Additionally block flag is forced to set, to translate blocking lock to remote nfs server, expecting it supports async processing of the blocking locks too. https://bugzilla.kernel.org/show_bug.cgi?id=215383 Signed-off-by: Vasily Averin --- fs/nfs/nfs4proc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ee3bc79f6ca3..9b1380c4223c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7094,7 +7094,7 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); if (data == NULL) return -ENOMEM; - if (IS_SETLKW(cmd)) + if (IS_SETLKW(cmd) || (fl->fl_flags & FL_SLEEP)) data->arg.block = 1; nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1, recovery_type > NFS_LOCK_NEW); @@ -7200,6 +7200,9 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock int status; request->fl_flags |= FL_ACCESS; + if (((fl_flags & FL_SLEEP_POSIX) == FL_SLEEP_POSIX) && IS_SETLK(cmd)) + request->fl_flags &= ~FL_SLEEP; + status = locks_lock_inode_wait(state->inode, request); if (status < 0) goto out; -- 2.25.1