Commit 5e0debe0 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

slub: remove use of page->flags 

Use slub->__page_flags instead.  We can also remove the assertion that
it's not a tail page as struct slab never points to a tail page.

Link: https://lkml.kernel.org/r/20240326171045.410737-9-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 51718e25

mm/slub.c

+2 −8
Original line number Diff line number Diff line
@@ -616,18 +616,12 @@ slub_set_cpu_partial(struct kmem_cache *s, unsigned int nr_objects) 
 */

static __always_inline void slab_lock(struct slab *slab)

{

	struct page *page = slab_page(slab);



	VM_BUG_ON_PAGE(PageTail(page), page);

	bit_spin_lock(PG_locked, &page->flags);

	bit_spin_lock(PG_locked, &slab->__page_flags);

}



static __always_inline void slab_unlock(struct slab *slab)

{

	struct page *page = slab_page(slab);



	VM_BUG_ON_PAGE(PageTail(page), page);

	bit_spin_unlock(PG_locked, &page->flags);

	bit_spin_unlock(PG_locked, &slab->__page_flags);

}



static inline bool