[PATCH 4/4] slob: Use slab_list instead of lru

[Tobin C. Harding]

Currently we use the page->lru list for maintaining lists of slabs.  We
have a list in the page structure (slab_list) that can be used for this
purpose.  Doing so makes the code cleaner since we are not overloading
the lru list.

Use the slab_list instead of the lru list for maintaining lists of
slabs.

Signed-off-by: Tobin C. Harding <to...@kernel.org>
---
 mm/slob.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/mm/slob.c b/mm/slob.c
index 307c2c9feb44..ee68ff2a2833 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -112,13 +112,13 @@ 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->lru, list);
+       list_add(&sp->slab_list, list);
        __SetPageSlobFree(sp);
 }
 
 static inline void clear_slob_page_free(struct page *sp)
 {
-       list_del(&sp->lru);
+       list_del(&sp->slab_list);
        __ClearPageSlobFree(sp);
 }
 
@@ -283,7 +283,7 @@ 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, lru) {
+       list_for_each_entry(sp, slob_list, slab_list) {
 #ifdef CONFIG_NUMA
                /*
                 * If there's a node specification, search for a partial
@@ -297,7 +297,7 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, 
int node)
                        continue;
 
                /* Attempt to alloc */
-               prev = sp->lru.prev;
+               prev = sp->slab_list.prev;
                b = slob_page_alloc(sp, size, align);
                if (!b)
                        continue;
@@ -323,7 +323,7 @@ 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->lru);
+               INIT_LIST_HEAD(&sp->slab_list);
                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);
-- 
2.21.0