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| author | Chuck Lever <chuck.lever@oracle.com> | 2008-10-22 13:12:36 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2008-10-22 13:36:05 -0400 |
| commit | 1cd9cd161c89f569b90583b7797bd972c3bf0cff (patch) | |
| tree | 1b2f43ddc4d22089de09b949442f4b46663e3949 | |
| parent | 107e0008dfb8bd6366bc8827f5bbbc0c1f795d2d (diff) | |
| download | linux-1cd9cd161c89f569b90583b7797bd972c3bf0cff.tar.bz2 | |
NFSD: Fix BUG during NFSD shutdown processing
The Linux NFS server can be started via a user-space write to
/proc/fs/nfs/threads or to /proc/fs/nfs/portlist. In the first case,
all default listeners are started (both UDP and TCP). In the second,
a listener is started only for one specified transport.
The NFS server has to make sure lockd stays up until the last listener
transport goes away. To support both start-up interfaces, it should
do one lockd_up() for each NFSD listener.
The nfsd_init_socks() function used to do one lockd_up() call for each
svc_create_xprt(). Recently commit
26a414092353590ceaa5955bcb53f863d6ea7549 mistakenly changed
nfsd_init_socks() to do only one lockd_up() call even though it still
does two svc_create_xprt() calls.
The end result is a lockd_down() BUG during NFSD shutdown processing
because nfsd_last_threads() does a lockd_down() call for each entry
on the sv_permsocks list, but the start-up code doesn't do a matching
number of lockd_up() calls.
Add a second lockd_up() in nfsd_init_socks() to make sure the number
of lockd_up() calls matches the number of entries on the NFS servers's
sv_permsocks list.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| -rw-r--r-- | fs/nfsd/nfssvc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index 59eeb46f82c5..07e4f5d7baa8 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -249,6 +249,10 @@ static int nfsd_init_socks(int port) if (error < 0) return error; + error = lockd_up(); + if (error < 0) + return error; + error = svc_create_xprt(nfsd_serv, "tcp", port, SVC_SOCK_DEFAULTS); if (error < 0) |