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mm: page_frag: use __alloc_pages() to replace alloc_pages_node()

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It seems there is about 24Bytes binary size increase for
__page_frag_cache_refill() after refactoring in arm64 system
with 64K PAGE_SIZE. By doing the gdb disassembling, It seems
we can have more than 100Bytes decrease for the binary size
by using __alloc_pages() to replace alloc_pages_node(), as
there seems to be some unnecessary checking for nid being
NUMA_NO_NODE, especially when page_frag is part of the mm
system.

CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux-MM <linux-mm@kvack.org>
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Link: https://patch.msgid.link/20241028115343.3405838-8-linyunsheng@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Yunsheng Lin 2024-10-28 19:53:42 +08:00 committed by Jakub Kicinski
parent 0c3ce2f502
commit ec397ea00c
1 changed files with 3 additions and 3 deletions
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6
mm/page_frag_cache.c
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@ -56,11 +56,11 @@ static struct page *__page_frag_cache_refill(struct page_frag_cache *nc,
#if (PAGE_SIZE < PAGE_FRAG_CACHE_MAX_SIZE) #if (PAGE_SIZE < PAGE_FRAG_CACHE_MAX_SIZE)
gfp_mask = (gfp_mask & ~__GFP_DIRECT_RECLAIM) | __GFP_COMP | gfp_mask = (gfp_mask & ~__GFP_DIRECT_RECLAIM) | __GFP_COMP |
__GFP_NOWARN | __GFP_NORETRY | __GFP_NOMEMALLOC; __GFP_NOWARN | __GFP_NORETRY | __GFP_NOMEMALLOC;
page = alloc_pages_node(NUMA_NO_NODE, gfp_mask, page = __alloc_pages(gfp_mask, PAGE_FRAG_CACHE_MAX_ORDER,
PAGE_FRAG_CACHE_MAX_ORDER); numa_mem_id(), NULL);
#endif #endif
if (unlikely(!page)) { if (unlikely(!page)) {
page = alloc_pages_node(NUMA_NO_NODE, gfp, 0); page = __alloc_pages(gfp, 0, numa_mem_id(), NULL);
order = 0; order = 0;
} }