[PATCH] mm/vmalloc: terminate searching since one node found
DORMANTno replies
From: Zhaoyang Huang <hidden>
Date: 2017-07-16 07:23:57
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lkml
Subsystem:
memory management, the rest, vmalloc · Maintainers:
Andrew Morton, Linus Torvalds, Uladzislau Rezki
From: Zhaoyang Huang <zhaoyang.huang@spreadtrum.com:wq> It is no need to find the very beginning of the area within alloc_vmap_area, which can be done by judging each node during the process Signed-off-by: Zhaoyang Huang <redacted> --- mm/vmalloc.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 34a1c3e..f833e07 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c@@ -459,9 +459,16 @@ static struct vmap_area *alloc_vmap_area(unsigned long size, while (n) { struct vmap_area *tmp; + struct vmap_area *tmp_next; tmp = rb_entry(n, struct vmap_area, rb_node); + tmp_next = list_next_entry(tmp, list); if (tmp->va_end >= addr) { first = tmp; + if (ALIGN(tmp->va_end, align) + size + < tmp_next->va_start) { + addr = ALIGN(tmp->va_end, align); + goto found; + } if (tmp->va_start <= addr) break; n = n->rb_left;
--
1.9.1
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