VFS: make vfs_fstat() use f[get|put]_light()

commit e994defb7b6813ba6fa7a2a36e86d2455ad1dc35 upstream. Use the *_light() versions that properly avoid doing the file user count updates when they are unnecessary. Signed-off-by: Linus Torvalds <[email protected]> [xr: Backported to 3.4: adjust function name] Signed-off-by: Rui Xiang <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
VanirAOSP · Oct 27, 2017 · dde8633 · dde8633
1 parent 2ffd416
commit dde8633
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/fs/stat.c b/fs/stat.c
@@ -57,12 +57,13 @@ EXPORT_SYMBOL(vfs_getattr);
 
 int vfs_fstat(unsigned int fd, struct kstat *stat)
 {
-	struct file *f = fget_raw(fd);
+	int fput_needed;
+	struct file *f = fget_light(fd, &fput_needed);
 	int error = -EBADF;
 
 	if (f) {
 		error = vfs_getattr(f->f_path.mnt, f->f_path.dentry, stat);
-		fput(f);
+		fput_light(f, fput_needed);
 	}
 	return error;
 }