From 34bf6ef94a835a8f1d8abd3e7d38c6c08d205867 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Tue, 8 Apr 2014 13:44:27 -0700 Subject: mm: slab/slub: use page->list consistently instead of page->lru 'struct page' has two list_head fields: 'lru' and 'list'. Conveniently, they are unioned together. This means that code can use them interchangably, which gets horribly confusing like with this nugget from slab.c: > list_del(&page->lru); > if (page->active == cachep->num) > list_add(&page->list, &n->slabs_full); This patch makes the slab and slub code use page->lru universally instead of mixing ->list and ->lru. So, the new rule is: page->lru is what the you use if you want to keep your page on a list. Don't like the fact that it's not called ->list? Too bad. Signed-off-by: Dave Hansen Acked-by: Christoph Lameter Acked-by: David Rientjes Cc: Pekka Enberg Signed-off-by: Andrew Morton Signed-off-by: Pekka Enberg --- mm/slob.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'mm/slob.c') diff --git a/mm/slob.c b/mm/slob.c index 4bf8809dfcce..730cad45d4be 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -111,13 +111,13 @@ static inline int slob_page_free(struct page *sp) static void set_slob_page_free(struct page *sp, struct list_head *list) { - list_add(&sp->list, list); + list_add(&sp->lru, list); __SetPageSlobFree(sp); } static inline void clear_slob_page_free(struct page *sp) { - list_del(&sp->list); + list_del(&sp->lru); __ClearPageSlobFree(sp); } @@ -282,7 +282,7 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node) spin_lock_irqsave(&slob_lock, flags); /* Iterate through each partially free page, try to find room */ - list_for_each_entry(sp, slob_list, list) { + list_for_each_entry(sp, slob_list, lru) { #ifdef CONFIG_NUMA /* * If there's a node specification, search for a partial @@ -296,7 +296,7 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node) continue; /* Attempt to alloc */ - prev = sp->list.prev; + prev = sp->lru.prev; b = slob_page_alloc(sp, size, align); if (!b) continue; @@ -322,7 +322,7 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node) spin_lock_irqsave(&slob_lock, flags); sp->units = SLOB_UNITS(PAGE_SIZE); sp->freelist = b; - INIT_LIST_HEAD(&sp->list); + INIT_LIST_HEAD(&sp->lru); set_slob(b, SLOB_UNITS(PAGE_SIZE), b + SLOB_UNITS(PAGE_SIZE)); set_slob_page_free(sp, slob_list); b = slob_page_alloc(sp, size, align); -- cgit