diff options
Diffstat (limited to 'include/linux/swapops.h')
| -rw-r--r-- | include/linux/swapops.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/swapops.h b/include/linux/swapops.h index ceb6cc5ceeb..7bf2d149d20 100644 --- a/include/linux/swapops.h +++ b/include/linux/swapops.h @@ -42,6 +42,12 @@ static inline pgoff_t swp_offset(swp_entry_t entry) return entry.val & SWP_OFFSET_MASK(entry); } +/* check whether a pte points to a swap entry */ +static inline int is_swap_pte(pte_t pte) +{ + return !pte_none(pte) && !pte_present(pte) && !pte_file(pte); +} + /* * Convert the arch-dependent pte representation of a swp_entry_t into an * arch-independent swp_entry_t. |