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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-08-07 15:28:33 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-08-07 16:12:50 -0400 |
| commit | 3d39c691ff486142dd9aaeac12f553f4476b7a62 (patch) | |
| tree | 78ad555ea06be23933a93ec9c7c68a788f979085 /fs/nfs/nfs4renewd.c | |
| parent | a4deb81ba8ece75af5560d40d9bb8d242c48a111 (diff) | |
| download | lwn-3d39c691ff486142dd9aaeac12f553f4476b7a62.tar.gz lwn-3d39c691ff486142dd9aaeac12f553f4476b7a62.zip | |
NFS: Replace flush_scheduled_work with cancel_work_sync() and friends
This will avoid deadlocks of the form:
stack backtrace:
[<c0104fda>] show_trace_log_lvl+0x1a/0x30
[<c0105c02>] show_trace+0x12/0x20
[<c0105d15>] dump_stack+0x15/0x20
[<c013ee42>] __lock_acquire+0xc22/0x1030
[<c013f2b1>] lock_acquire+0x61/0x80
[<c012edd9>] flush_workqueue+0x49/0x70
[<c012ee0d>] flush_scheduled_work+0xd/0x10
[<dcf55c0c>] nfs_release_automount_timer+0x2c/0x30 [nfs]
[<dcf45d8e>] nfs_free_server+0x9e/0xd0 [nfs]
[<dcf4e626>] nfs_kill_super+0x16/0x20 [nfs]
[<c017b38d>] deactivate_super+0x7d/0xa0
[<c018f94b>] mntput_no_expire+0x4b/0x80
[<c018fd94>] expire_mount_list+0xe4/0x140
[<c0191219>] mark_mounts_for_expiry+0x99/0xb0
[<dcf55d1d>] nfs_expire_automounts+0xd/0x40 [nfs]
[<c012e61b>] run_workqueue+0x12b/0x1e0
[<c012f05b>] worker_thread+0x9b/0x100
[<c0131c72>] kthread+0x42/0x70
[<c0104c0f>] kernel_thread_helper+0x7/0x18
=======================
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4renewd.c')
| -rw-r--r-- | fs/nfs/nfs4renewd.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c index 0505ca124034..3ea352d82eba 100644 --- a/fs/nfs/nfs4renewd.c +++ b/fs/nfs/nfs4renewd.c @@ -127,16 +127,15 @@ nfs4_schedule_state_renewal(struct nfs_client *clp) void nfs4_renewd_prepare_shutdown(struct nfs_server *server) { - flush_scheduled_work(); + cancel_delayed_work(&server->nfs_client->cl_renewd); } void nfs4_kill_renewd(struct nfs_client *clp) { down_read(&clp->cl_sem); - cancel_delayed_work(&clp->cl_renewd); + cancel_delayed_work_sync(&clp->cl_renewd); up_read(&clp->cl_sem); - flush_scheduled_work(); } /* |