switch simple cases of fget_light to fdget

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 22 insertions, 26 deletions

diff --git a/fs/timerfd.c b/fs/timerfd.c
index dd91e9420c9e..d03822bbf190 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -234,19 +234,17 @@ static const struct file_operations timerfd_fops = {
         .llseek         = noop_llseek,
 };
 
-static struct file *timerfd_fget(int fd, int *fput_needed)
+static int timerfd_fget(int fd, struct fd *p)
 {
-        struct file *file;
-
-        file = fget_light(fd, fput_needed);
-        if (!file)
-                return ERR_PTR(-EBADF);
-        if (file->f_op != &timerfd_fops) {
-                fput_light(file, *fput_needed);
-                return ERR_PTR(-EINVAL);
+        struct fd f = fdget(fd);
+        if (!f.file)
+                return -EBADF;
+        if (f.file->f_op != &timerfd_fops) {
+                fdput(f);
+                return -EINVAL;
         }
-
-        return file;
+        *p = f;
+        return 0;
 }
 
 SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
@@ -284,10 +282,10 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
                 const struct itimerspec __user *, utmr,
                 struct itimerspec __user *, otmr)
 {
-        struct file *file;
+        struct fd f;
         struct timerfd_ctx *ctx;
         struct itimerspec ktmr, kotmr;
-        int ret, fput_needed;
+        int ret;
 
         if (copy_from_user(&ktmr, utmr, sizeof(ktmr)))
                 return -EFAULT;
@@ -297,10 +295,10 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
             !timespec_valid(&ktmr.it_interval))
                 return -EINVAL;
 
-        file = timerfd_fget(ufd, &fput_needed);
-        if (IS_ERR(file))
-                return PTR_ERR(file);
-        ctx = file->private_data;
+        ret = timerfd_fget(ufd, &f);
+        if (ret)
+                return ret;
+        ctx = f.file->private_data;
 
         timerfd_setup_cancel(ctx, flags);
 
@@ -334,7 +332,7 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
         ret = timerfd_setup(ctx, flags, &ktmr);
 
         spin_unlock_irq(&ctx->wqh.lock);
-        fput_light(file, fput_needed);
+        fdput(f);
         if (otmr && copy_to_user(otmr, &kotmr, sizeof(kotmr)))
                 return -EFAULT;
 
@@ -343,15 +341,13 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
 
 SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr)
 {
-        struct file *file;
+        struct fd f;
         struct timerfd_ctx *ctx;
         struct itimerspec kotmr;
-        int fput_needed;
-
-        file = timerfd_fget(ufd, &fput_needed);
-        if (IS_ERR(file))
-                return PTR_ERR(file);
-        ctx = file->private_data;
+        int ret = timerfd_fget(ufd, &f);
+        if (ret)
+                return ret;
+        ctx = f.file->private_data;
 
         spin_lock_irq(&ctx->wqh.lock);
         if (ctx->expired && ctx->tintv.tv64) {
@@ -363,7 +359,7 @@ 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_light(file, fput_needed);
+        fdput(f);
 
         return copy_to_user(otmr, &kotmr, sizeof(kotmr)) ? -EFAULT: 0;
 }