diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 50e2c2914ac2..73a52aba448f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1218,7 +1218,15 @@ bool __must_check try_grab_page(struct page *page, unsigned int flags); struct page *try_grab_compound_head(struct page *page, int refs, unsigned int flags); -struct page *try_get_compound_head(struct page *page, int refs); + +static inline __must_check bool try_get_page(struct page *page) +{ + page = compound_head(page); + if (WARN_ON_ONCE(page_ref_count(page) <= 0)) + return false; + page_ref_inc(page); + return true; +} static inline void put_page(struct page *page) { |