diff options
| -rw-r--r-- | include/linux/page-flags.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index dff90852fbc6..818fa39538a9 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -404,8 +404,9 @@ u64 stable_page_flags(struct page *page); static inline int PageUptodate(struct page *page) { - int ret = test_bit(PG_uptodate, &(page)->flags); - + int ret; + page = compound_head(page); + ret = test_bit(PG_uptodate, &(page)->flags); /* * Must ensure that the data we read out of the page is loaded * _after_ we've loaded page->flags to check for PageUptodate. @@ -422,12 +423,14 @@ static inline int PageUptodate(struct page *page) static inline void __SetPageUptodate(struct page *page) { + VM_BUG_ON_PAGE(PageTail(page), page); smp_wmb(); __set_bit(PG_uptodate, &page->flags); } static inline void SetPageUptodate(struct page *page) { + VM_BUG_ON_PAGE(PageTail(page), page); /* * Memory barrier must be issued before setting the PG_uptodate bit, * so that all previous stores issued in order to bring the page @@ -437,7 +440,7 @@ static inline void SetPageUptodate(struct page *page) set_bit(PG_uptodate, &page->flags); } -CLEARPAGEFLAG(Uptodate, uptodate, PF_ANY) +CLEARPAGEFLAG(Uptodate, uptodate, PF_NO_TAIL) int test_clear_page_writeback(struct page *page); int __test_set_page_writeback(struct page *page, bool keep_write); |