switch readahead(2) to fget_light()

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

1 files changed, 3 insertions, 2 deletions

diff --git a/mm/readahead.c b/mm/readahead.c
index ea8f8fa21649..1011111e2bf4 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -580,9 +580,10 @@ SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
 {
         ssize_t ret;
         struct file *file;
+        int fput_needed;
 
         ret = -EBADF;
-        file = fget(fd);
+        file = fget_light(fd, &fput_needed);
         if (file) {
                 if (file->f_mode & FMODE_READ) {
                         struct address_space *mapping = file->f_mapping;
@@ -591,7 +592,7 @@ SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
                         unsigned long len = end - start + 1;
                         ret = do_readahead(mapping, file, start, len);
                 }
-                fput(file);
+                fput_light(file, fput_needed);
         }
         return ret;
 }