Messages in this thread Patch in this message | | | From | ycnian@gmail ... | Subject | nfsv4.1 client refuses to suspend | Date | Fri, 22 Mar 2013 10:57:21 +0800 |
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nfsv4.1 client suspending fails with such info
Freezing of tasks failed after 20.00 seconds (1 tasks refusing to freeze, wq_busy=0): nfsv4.1-svc S ffff88007889f2e0 0 3191 2 0x00000080 ffff88007b2f3e28 0000000000000046 ffff88007b2f2010 00000000000127c0 ffff880079b08000 00000000000127c0 ffff88007b2f3fd8 00000000000127c0 ffff88007b2f3fd8 00000000000127c0 ffffffff81a14410 ffff880079b08000 Call Trace: [<ffffffff81441396>] schedule+0x64/0x66 [<ffffffffa06a6892>] nfs41_callback_svc+0x100/0x129 [nfsv4] [<ffffffff8104fdb8>] ? wake_up_bit+0x2a/0x2a [<ffffffffa06a6792>] ? nfs_callback_up+0x548/0x548 [nfsv4] [<ffffffff8104f7e0>] kthread+0xb5/0xbd [<ffffffff8104f72b>] ? kthread_freezable_should_stop+0x65/0x65 [<ffffffff8144912c>] ret_from_fork+0x7c/0xb0 [<ffffffff8104f72b>] ? kthread_freezable_should_stop+0x65/0x65
I read such threads [1] nfs/sunrpc: allow freezing of tasks with NFS calls in flight [2] LOCKDEP: 3.9-rc1: mount.nfs/4272 still has locks held! and then modify nfs41_callback_svc(). It works on my machine. I don't know the details of freezing, so I'm not sure if the modification is reasonable. This is not a formal patch. Thanks.
Signed-off-by: Yanchuan Nian <ycnian@gmail.com> --- fs/nfs/callback.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 5088b57..8addb7b 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -138,7 +138,7 @@ nfs41_callback_svc(void *vrqstp) error); } else { spin_unlock_bh(&serv->sv_cb_lock); - schedule(); + freezable_schedule(); } finish_wait(&serv->sv_cb_waitq, &wq); } -- 1.7.4.4
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