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authorNeilBrown <neilb@suse.de>2007-03-06 01:42:22 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-06 09:30:26 -0800
commitcda1fd4abd773216a888487af0170d0cc3d50454 (patch)
treeaed6662bab1789a1698644f2e1d0db4255ecad67 /net/sunrpc/svc.c
parent5a05ed73e1abfd7e0e7d474817245861deaa18af (diff)
[PATCH] knfsd: fix recently introduced problem with shutting down a busy NFS server
When the last thread of nfsd exits, it shuts down all related sockets. It currently uses svc_close_socket to do this, but that only is immediately effective if the socket is not SK_BUSY. If the socket is busy - i.e. if a request has arrived that has not yet been processes - svc_close_socket is not effective and the shutdown process spins. So create a new svc_force_close_socket which removes the SK_BUSY flag is set and then calls svc_close_socket. Also change some open-codes loops in svc_destroy to use list_for_each_entry_safe. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/sunrpc/svc.c')
-rw-r--r--net/sunrpc/svc.c21
1 files changed, 9 insertions, 12 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 8353829bc5c..f960b138236 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -367,6 +367,7 @@ void
svc_destroy(struct svc_serv *serv)
{
struct svc_sock *svsk;
+ struct svc_sock *tmp;
dprintk("svc: svc_destroy(%s, %d)\n",
serv->sv_program->pg_name,
@@ -382,21 +383,17 @@ svc_destroy(struct svc_serv *serv)
del_timer_sync(&serv->sv_temptimer);
- while (!list_empty(&serv->sv_tempsocks)) {
- svsk = list_entry(serv->sv_tempsocks.next,
- struct svc_sock,
- sk_list);
- svc_close_socket(svsk);
- }
+ list_for_each_entry_safe(svsk, tmp, &serv->sv_tempsocks, sk_list)
+ svc_force_close_socket(svsk);
+
if (serv->sv_shutdown)
serv->sv_shutdown(serv);
- while (!list_empty(&serv->sv_permsocks)) {
- svsk = list_entry(serv->sv_permsocks.next,
- struct svc_sock,
- sk_list);
- svc_close_socket(svsk);
- }
+ list_for_each_entry_safe(svsk, tmp, &serv->sv_permsocks, sk_list)
+ svc_force_close_socket(svsk);
+
+ BUG_ON(!list_empty(&serv->sv_permsocks));
+ BUG_ON(!list_empty(&serv->sv_tempsocks));
cache_clean_deferred(serv);