switch simple cases of fget_light to fdget

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

1 files changed, 7 insertions, 8 deletions

diff --git a/mm/readahead.c b/mm/readahead.c
index 1011111e2bf4..7963f2391236 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -579,20 +579,19 @@ do_readahead(struct address_space *mapping, struct file *filp,
 SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
 {
         ssize_t ret;
-        struct file *file;
-        int fput_needed;
+        struct fd f;
 
         ret = -EBADF;
-        file = fget_light(fd, &fput_needed);
-        if (file) {
-                if (file->f_mode & FMODE_READ) {
-                        struct address_space *mapping = file->f_mapping;
+        f = fdget(fd);
+        if (f.file) {
+                if (f.file->f_mode & FMODE_READ) {
+                        struct address_space *mapping = f.file->f_mapping;
                         pgoff_t start = offset >> PAGE_CACHE_SHIFT;
                         pgoff_t end = (offset + count - 1) >> PAGE_CACHE_SHIFT;
                         unsigned long len = end - start + 1;
-                        ret = do_readahead(mapping, file, start, len);
+                        ret = do_readahead(mapping, f.file, start, len);
                 }
-                fput_light(file, fput_needed);
+                fdput(f);
         }
         return ret;
 }