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authorAl Viro <viro@zeniv.linux.org.uk>2012-08-26 21:32:02 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-09-26 21:10:08 -0400
commit4109633f4c4dcdaedf0d85ae74dba334760c577b (patch)
tree862db78eecde7c1db124bd628fa5eadaa3ff3683
parent5e196a9cf557dbc2bf808824c6c4998150e18d06 (diff)
downloadlinux-4109633f4c4dcdaedf0d85ae74dba334760c577b.tar.bz2
switch timerfd_[sg]ettime(2) to fget_light()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/timerfd.c17
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;
}