kcore: add _text to KCORE_TEXT

[safe/jmp/linux-2.6] / fs / timerfd.c

diff --git a/fs/timerfd.c b/fs/timerfd.c
index 6a123b8..b86ab8e 100644 (file)
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -14,6 +14,7 @@
 #include <linux/fs.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/time.h>
@@ -109,31 +110,14 @@ static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count,
        struct timerfd_ctx *ctx = file->private_data;
        ssize_t res;
        u64 ticks = 0;
-       DECLARE_WAITQUEUE(wait, current);
 
        if (count < sizeof(ticks))
                return -EINVAL;
        spin_lock_irq(&ctx->wqh.lock);
-       res = -EAGAIN;
-       if (!ctx->ticks && !(file->f_flags & O_NONBLOCK)) {
-               __add_wait_queue(&ctx->wqh, &wait);
-               for (res = 0;;) {
-                       set_current_state(TASK_INTERRUPTIBLE);
-                       if (ctx->ticks) {
-                               res = 0;
-                               break;
-                       }
-                       if (signal_pending(current)) {
-                               res = -ERESTARTSYS;
-                               break;
-                       }
-                       spin_unlock_irq(&ctx->wqh.lock);
-                       schedule();
-                       spin_lock_irq(&ctx->wqh.lock);
-               }
-               __remove_wait_queue(&ctx->wqh, &wait);
-               __set_current_state(TASK_RUNNING);
-       }
+       if (file->f_flags & O_NONBLOCK)
+               res = -EAGAIN;
+       else
+               res = wait_event_interruptible_locked_irq(ctx->wqh, ctx->ticks);
        if (ctx->ticks) {
                ticks = ctx->ticks;
                if (ctx->expired && ctx->tintv.tv64) {
@@ -186,10 +170,9 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
        BUILD_BUG_ON(TFD_CLOEXEC != O_CLOEXEC);
        BUILD_BUG_ON(TFD_NONBLOCK != O_NONBLOCK);
 
-       if (flags & ~(TFD_CLOEXEC | TFD_NONBLOCK))
-               return -EINVAL;
-       if (clockid != CLOCK_MONOTONIC &&
-           clockid != CLOCK_REALTIME)
+       if ((flags & ~TFD_CREATE_FLAGS) ||
+           (clockid != CLOCK_MONOTONIC &&
+            clockid != CLOCK_REALTIME))
                return -EINVAL;
 
        ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
@@ -201,7 +184,7 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
        hrtimer_init(&ctx->tmr, clockid, HRTIMER_MODE_ABS);
 
        ufd = anon_inode_getfd("[timerfd]", &timerfd_fops, ctx,
-                              flags & (O_CLOEXEC | O_NONBLOCK));
+                              O_RDWR | (flags & TFD_SHARED_FCNTL_FLAGS));
        if (ufd < 0)
                kfree(ctx);
 
@@ -219,7 +202,8 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
        if (copy_from_user(&ktmr, utmr, sizeof(ktmr)))
                return -EFAULT;
 
-       if (!timespec_valid(&ktmr.it_value) ||
+       if ((flags & ~TFD_SETTIME_FLAGS) ||
+           !timespec_valid(&ktmr.it_value) ||
            !timespec_valid(&ktmr.it_interval))
                return -EINVAL;