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authorNeilBrown <neilb@suse.de>2023-09-11 10:39:04 -0400
committerChuck Lever <chuck.lever@oracle.com>2023-10-16 12:44:04 -0400
commitfa341560ca7458f4396d5a0771cb5f2358d8535d (patch)
treec8c18f267b8d7443da0e0dc581637b9c77353a9c /fs/lockd
parentf4578ba11c4a211d45877babe56c84d922301576 (diff)
SUNRPC: change how svc threads are asked to exit.
svc threads are currently stopped using kthread_stop(). This requires identifying a specific thread. However we don't care which thread stops, just as long as one does. So instead, set a flag in the svc_pool to say that a thread needs to die, and have each thread check this flag instead of calling kthread_should_stop(). The first thread to find and clear this flag then moves towards exiting. This removes an explicit dependency on sp_all_threads which will make a future patch simpler. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/lockd')
-rw-r--r--fs/lockd/svc.c5
-rw-r--r--fs/lockd/svclock.c5
2 files changed, 4 insertions, 6 deletions
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 365cc7adff66..81be07c1d3d1 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -24,7 +24,6 @@
#include <linux/uio.h>
#include <linux/smp.h>
#include <linux/mutex.h>
-#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/inetdevice.h>
@@ -135,11 +134,11 @@ lockd(void *vrqstp)
* The main request loop. We don't terminate until the last
* NFS mount or NFS daemon has gone away.
*/
- while (!kthread_should_stop()) {
+ while (!svc_thread_should_stop(rqstp)) {
/* update sv_maxconn if it has changed */
rqstp->rq_server->sv_maxconn = nlm_max_connections;
- nlmsvc_retry_blocked();
+ nlmsvc_retry_blocked(rqstp);
svc_recv(rqstp);
}
if (nlmsvc_ops)
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index 993999297e31..2dc10900ad1c 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -30,7 +30,6 @@
#include <linux/sunrpc/svc_xprt.h>
#include <linux/lockd/nlm.h>
#include <linux/lockd/lockd.h>
-#include <linux/kthread.h>
#include <linux/exportfs.h>
#define NLMDBG_FACILITY NLMDBG_SVCLOCK
@@ -1032,13 +1031,13 @@ retry_deferred_block(struct nlm_block *block)
* be retransmitted.
*/
void
-nlmsvc_retry_blocked(void)
+nlmsvc_retry_blocked(struct svc_rqst *rqstp)
{
unsigned long timeout = MAX_SCHEDULE_TIMEOUT;
struct nlm_block *block;
spin_lock(&nlm_blocked_lock);
- while (!list_empty(&nlm_blocked) && !kthread_should_stop()) {
+ while (!list_empty(&nlm_blocked) && !svc_thread_should_stop(rqstp)) {
block = list_entry(nlm_blocked.next, struct nlm_block, b_list);
if (block->b_when == NLM_NEVER)