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| author | WANG Cong <xiyou.wangcong@gmail.com> | 2016-11-11 10:20:50 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-14 13:17:21 -0500 |
| commit | d9dc8b0f8b4ec8cdc48ad5a20a3105387138be82 (patch) | |
| tree | a28c86da1c3ba7fef0f3fa82a5c7fc5bbb6fe2bf /crypto/algif_skcipher.c | |
| parent | 7d384846b9987f7b611357adf3cdfecfdcf0c402 (diff) | |
| download | lwn-d9dc8b0f8b4ec8cdc48ad5a20a3105387138be82.tar.gz lwn-d9dc8b0f8b4ec8cdc48ad5a20a3105387138be82.zip | |
net: fix sleeping for sk_wait_event()
Similar to commit 14135f30e33c ("inet: fix sleeping inside inet_wait_for_connect()"),
sk_wait_event() needs to fix too, because release_sock() is blocking,
it changes the process state back to running after sleep, which breaks
the previous prepare_to_wait().
Switch to the new wait API.
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'crypto/algif_skcipher.c')
| -rw-r--r-- | crypto/algif_skcipher.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index 28556fce4267..1e38aaa8303e 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -199,26 +199,26 @@ static void skcipher_free_sgl(struct sock *sk) static int skcipher_wait_for_wmem(struct sock *sk, unsigned flags) { - long timeout; - DEFINE_WAIT(wait); + DEFINE_WAIT_FUNC(wait, woken_wake_function); int err = -ERESTARTSYS; + long timeout; if (flags & MSG_DONTWAIT) return -EAGAIN; sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk); + add_wait_queue(sk_sleep(sk), &wait); for (;;) { if (signal_pending(current)) break; - prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); timeout = MAX_SCHEDULE_TIMEOUT; - if (sk_wait_event(sk, &timeout, skcipher_writable(sk))) { + if (sk_wait_event(sk, &timeout, skcipher_writable(sk), &wait)) { err = 0; break; } } - finish_wait(sk_sleep(sk), &wait); + remove_wait_queue(sk_sleep(sk), &wait); return err; } @@ -242,10 +242,10 @@ static void skcipher_wmem_wakeup(struct sock *sk) static int skcipher_wait_for_data(struct sock *sk, unsigned flags) { + DEFINE_WAIT_FUNC(wait, woken_wake_function); struct alg_sock *ask = alg_sk(sk); struct skcipher_ctx *ctx = ask->private; long timeout; - DEFINE_WAIT(wait); int err = -ERESTARTSYS; if (flags & MSG_DONTWAIT) { @@ -254,17 +254,17 @@ static int skcipher_wait_for_data(struct sock *sk, unsigned flags) sk_set_bit(SOCKWQ_ASYNC_WAITDATA, sk); + add_wait_queue(sk_sleep(sk), &wait); for (;;) { if (signal_pending(current)) break; - prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); timeout = MAX_SCHEDULE_TIMEOUT; - if (sk_wait_event(sk, &timeout, ctx->used)) { + if (sk_wait_event(sk, &timeout, ctx->used, &wait)) { err = 0; break; } } - finish_wait(sk_sleep(sk), &wait); + remove_wait_queue(sk_sleep(sk), &wait); sk_clear_bit(SOCKWQ_ASYNC_WAITDATA, sk); |