This removes some direct accesses to struct page, working towards splitting out struct ptdesc from struct page.
Signed-off-by: Vishal Moola (Oracle) <vishal.mo...@gmail.com> Acked-by: Mike Rapoport (IBM) <r...@kernel.org> --- include/linux/mm.h | 6 +++--- mm/memory.c | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 1511faf0263c..39b0a4661e44 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2798,7 +2798,7 @@ static inline void pagetable_free(struct ptdesc *pt) #if USE_SPLIT_PTE_PTLOCKS #if ALLOC_SPLIT_PTLOCKS void __init ptlock_cache_init(void); -extern bool ptlock_alloc(struct page *page); +bool ptlock_alloc(struct ptdesc *ptdesc); extern void ptlock_free(struct page *page); static inline spinlock_t *ptlock_ptr(struct page *page) @@ -2810,7 +2810,7 @@ static inline void ptlock_cache_init(void) { } -static inline bool ptlock_alloc(struct page *page) +static inline bool ptlock_alloc(struct ptdesc *ptdesc) { return true; } @@ -2840,7 +2840,7 @@ static inline bool ptlock_init(struct page *page) * slab code uses page->slab_cache, which share storage with page->ptl. */ VM_BUG_ON_PAGE(*(unsigned long *)&page->ptl, page); - if (!ptlock_alloc(page)) + if (!ptlock_alloc(page_ptdesc(page))) return false; spin_lock_init(ptlock_ptr(page)); return true; diff --git a/mm/memory.c b/mm/memory.c index 80faf3e76232..2ff14f50c7b3 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -5920,14 +5920,14 @@ void __init ptlock_cache_init(void) SLAB_PANIC, NULL); } -bool ptlock_alloc(struct page *page) +bool ptlock_alloc(struct ptdesc *ptdesc) { spinlock_t *ptl; ptl = kmem_cache_alloc(page_ptl_cachep, GFP_KERNEL); if (!ptl) return false; - page->ptl = ptl; + ptdesc->ptl = ptl; return true; } -- 2.40.1