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slub: remove use of page->flags

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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: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-03-26 17:10:30 +00:00 committed by Andrew Morton
parent 51718e25c5
commit 5e0debe012
1 changed files with 2 additions and 8 deletions
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10
mm/slub.c
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@ -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