mm: remove reference to PG_buddy
PG_buddy doesn't exist any more. It's called PageBuddy now. Link: http://lkml.kernel.org/r/20171220155552.15884-9-willy@infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -175,13 +175,13 @@ struct page {
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};
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union {
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unsigned long private; /* Mapping-private opaque data:
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* usually used for buffer_heads
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* if PagePrivate set; used for
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* swp_entry_t if PageSwapCache;
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* indicates order in the buddy
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* system if PG_buddy is set.
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*/
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/*
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* Mapping-private opaque data:
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* Usually used for buffer_heads if PagePrivate
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* Used for swp_entry_t if PageSwapCache
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* Indicates order in the buddy system if PageBuddy
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*/
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unsigned long private;
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#if USE_SPLIT_PTE_PTLOCKS
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#if ALLOC_SPLIT_PTLOCKS
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spinlock_t *ptl;
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