Messages in this thread | | | Date | Thu, 22 May 2014 06:43:08 +0900 (JST) | From | Thomas Gleixner <> | Subject | Re: [patch 3/3] timerfd: Implement write method |
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On Tue, 29 Apr 2014, Cyrill Gorcunov wrote: > + > +static ssize_t timerfd_write(struct file *file, const char __user *buf, > + size_t count, loff_t *ppos) > +{ > + struct timerfd_ctx *ctx = file->private_data; > + u64 ticks = 0; > + > + if (count < sizeof(ticks)) > + return -EINVAL; > + > + if (get_user(ticks, (u64 __user *) buf)) > + return -EFAULT; > + > + spin_lock_irq(&ctx->wqh.lock); > + ctx->ticks = ticks;
So what wakes a potential waiter in read/poll?
Thanks,
tglx
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