include/linux/memfd.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __LINUX_MEMFD_H
   3 #define __LINUX_MEMFD_H
   4
   5 #include <linux/file.h>
   6
   7 #ifdef CONFIG_MEMFD_CREATE
   8 extern long memfd_fcntl(struct file *file, unsigned int cmd, unsigned int arg);
   9 struct folio *memfd_alloc_folio(struct file *memfd, pgoff_t idx);
  10 #else
  11 static inline long memfd_fcntl(struct file *f, unsigned int c, unsigned int a)
  12 {
  13         return -EINVAL;
  14 }
  15 static inline struct folio *memfd_alloc_folio(struct file *memfd, pgoff_t idx)
  16 {
  17         return ERR_PTR(-EINVAL);
  18 }
  19 #endif
  20
  21 #endif /* __LINUX_MEMFD_H */