diff options
| -rw-r--r-- | fs/timerfd.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/fs/timerfd.c b/fs/timerfd.c index dffeb3795af1..dd91e9420c9e 100644 --- a/fs/timerfd.c +++ b/fs/timerfd.c @@ -234,15 +234,15 @@ static const struct file_operations timerfd_fops = { .llseek = noop_llseek, }; -static struct file *timerfd_fget(int fd) +static struct file *timerfd_fget(int fd, int *fput_needed) { struct file *file; - file = fget(fd); + file = fget_light(fd, fput_needed); if (!file) return ERR_PTR(-EBADF); if (file->f_op != &timerfd_fops) { - fput(file); + fput_light(file, *fput_needed); return ERR_PTR(-EINVAL); } @@ -287,7 +287,7 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags, struct file *file; struct timerfd_ctx *ctx; struct itimerspec ktmr, kotmr; - int ret; + int ret, fput_needed; if (copy_from_user(&ktmr, utmr, sizeof(ktmr))) return -EFAULT; @@ -297,7 +297,7 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags, !timespec_valid(&ktmr.it_interval)) return -EINVAL; - file = timerfd_fget(ufd); + file = timerfd_fget(ufd, &fput_needed); if (IS_ERR(file)) return PTR_ERR(file); ctx = file->private_data; @@ -334,7 +334,7 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags, ret = timerfd_setup(ctx, flags, &ktmr); spin_unlock_irq(&ctx->wqh.lock); - fput(file); + fput_light(file, fput_needed); if (otmr && copy_to_user(otmr, &kotmr, sizeof(kotmr))) return -EFAULT; @@ -346,8 +346,9 @@ SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr) struct file *file; struct timerfd_ctx *ctx; struct itimerspec kotmr; + int fput_needed; - file = timerfd_fget(ufd); + file = timerfd_fget(ufd, &fput_needed); if (IS_ERR(file)) return PTR_ERR(file); ctx = file->private_data; @@ -362,7 +363,7 @@ SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr) kotmr.it_value = ktime_to_timespec(timerfd_get_remaining(ctx)); kotmr.it_interval = ktime_to_timespec(ctx->tintv); spin_unlock_irq(&ctx->wqh.lock); - fput(file); + fput_light(file, fput_needed); return copy_to_user(otmr, &kotmr, sizeof(kotmr)) ? -EFAULT: 0; } |