diff options
| -rw-r--r-- | ipc/sem.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index a7e40ed8a076..70480a3aa698 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -752,19 +752,29 @@ static void do_smart_update(struct sem_array *sma, struct sembuf *sops, int nsop int otime, struct list_head *pt) { int i; + int progress; - if (sma->complex_count || sops == NULL) { - if (update_queue(sma, -1, pt)) + progress = 1; +retry_global: + if (sma->complex_count) { + if (update_queue(sma, -1, pt)) { + progress = 1; otime = 1; + sops = NULL; + } } + if (!progress) + goto done; if (!sops) { /* No semops; something special is going on. */ for (i = 0; i < sma->sem_nsems; i++) { - if (update_queue(sma, i, pt)) + if (update_queue(sma, i, pt)) { otime = 1; + progress = 1; + } } - goto done; + goto done_checkretry; } /* Check the semaphores that were modified. */ @@ -772,8 +782,15 @@ static void do_smart_update(struct sem_array *sma, struct sembuf *sops, int nsop if (sops[i].sem_op > 0 || (sops[i].sem_op < 0 && sma->sem_base[sops[i].sem_num].semval == 0)) - if (update_queue(sma, sops[i].sem_num, pt)) + if (update_queue(sma, sops[i].sem_num, pt)) { otime = 1; + progress = 1; + } + } +done_checkretry: + if (progress) { + progress = 0; + goto retry_global; } done: if (otime) |