| Message ID | 20230612210423.18611-8-vishal.moola@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Split ptdesc from struct page | expand |
On Mon, Jun 12, 2023 at 02:03:56PM -0700, Vishal Moola (Oracle) wrote: > This removes some direct accesses to struct page, working towards > splitting out struct ptdesc from struct page. > > Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> Acked-by: Mike Rapoport (IBM) <rppt@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 088b7664f897..e6f1be2a405e 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -2825,7 +2825,7 @@ static inline void pagetable_clear(void *x) > #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) > @@ -2837,7 +2837,7 @@ 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; > } > @@ -2867,7 +2867,7 @@ 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 80ce9dda2779..ba9579117686 100644 > --- a/mm/memory.c > +++ b/mm/memory.c > @@ -5934,14 +5934,14 @@ 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 > >
diff --git a/include/linux/mm.h b/include/linux/mm.h index 088b7664f897..e6f1be2a405e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2825,7 +2825,7 @@ static inline void pagetable_clear(void *x) #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) @@ -2837,7 +2837,7 @@ 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; } @@ -2867,7 +2867,7 @@ 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 80ce9dda2779..ba9579117686 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -5934,14 +5934,14 @@ 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; }
This removes some direct accesses to struct page, working towards splitting out struct ptdesc from struct page. Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> --- include/linux/mm.h | 6 +++--- mm/memory.c | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-)