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| author | David S. Miller <davem@davemloft.net> | 2021-10-22 11:41:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-10-22 11:41:16 +0100 |
| commit | bdfa75ad70e93633e18b1ed2b3866c01aa9bf9d2 (patch) | |
| tree | 45115e9c988cbaa49f3766cbe6e6775757cb8c20 /kernel/signal.c | |
| parent | ab98bbee072c7c30c391ae742b209efebb468273 (diff) | |
| parent | 64222515138e43da1fcf288f0289ef1020427b87 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Lots of simnple overlapping additions.
With a build fix from Stephen Rothwell.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 952741f6d0f9..487bf4f5dadf 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -426,22 +426,10 @@ __sigqueue_alloc(int sig, struct task_struct *t, gfp_t gfp_flags, */ rcu_read_lock(); ucounts = task_ucounts(t); - sigpending = inc_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_SIGPENDING, 1); - switch (sigpending) { - case 1: - if (likely(get_ucounts(ucounts))) - break; - fallthrough; - case LONG_MAX: - /* - * we need to decrease the ucount in the userns tree on any - * failure to avoid counts leaking. - */ - dec_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_SIGPENDING, 1); - rcu_read_unlock(); - return NULL; - } + sigpending = inc_rlimit_get_ucounts(ucounts, UCOUNT_RLIMIT_SIGPENDING); rcu_read_unlock(); + if (!sigpending) + return NULL; if (override_rlimit || likely(sigpending <= task_rlimit(t, RLIMIT_SIGPENDING))) { q = kmem_cache_alloc(sigqueue_cachep, gfp_flags); @@ -450,8 +438,7 @@ __sigqueue_alloc(int sig, struct task_struct *t, gfp_t gfp_flags, } if (unlikely(q == NULL)) { - if (dec_rlimit_ucounts(ucounts, UCOUNT_RLIMIT_SIGPENDING, 1)) - put_ucounts(ucounts); + dec_rlimit_put_ucounts(ucounts, UCOUNT_RLIMIT_SIGPENDING); } else { INIT_LIST_HEAD(&q->list); q->flags = sigqueue_flags; @@ -464,8 +451,8 @@ static void __sigqueue_free(struct sigqueue *q) { if (q->flags & SIGQUEUE_PREALLOC) return; - if (q->ucounts && dec_rlimit_ucounts(q->ucounts, UCOUNT_RLIMIT_SIGPENDING, 1)) { - put_ucounts(q->ucounts); + if (q->ucounts) { + dec_rlimit_put_ucounts(q->ucounts, UCOUNT_RLIMIT_SIGPENDING); q->ucounts = NULL; } kmem_cache_free(sigqueue_cachep, q); |