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Subject[PATCH 4/4] slob: Use slab_list instead of lru
Date
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 <tobin@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
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