linux-kernel - [PATCH 1/2] lib/genalloc.c: Use the vzalloc

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Date:   Mon, 24 Dec 2018 15:06:21 +0800
From:   Huang Shijie <sjhuang@...vatar.ai>
To:     <akpm@...ux-foundation.org>
CC:     <sfr@...b.auug.org.au>, <alexey.skidanov@...el.com>,
        <linux-kernel@...r.kernel.org>, <shijie8@...il.com>,
        Huang Shijie <sjhuang@...vatar.ai>
Subject: [PATCH 1/2] lib/genalloc.c: Use the vzalloc_node to allocate the bitmap.

Some devices may have over 1G memory on chip.
In some cases, the nbytes may big then 4M which is the bounday of
the memory buddy system. So use vzalloc_node() to allocate the bitmap.

Signed-off-by: Huang Shijie <sjhuang@...vatar.ai>
---
 lib/genalloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/genalloc.c b/lib/genalloc.c
index 5deb25c40a5a..0d0ff9f0483f 100644
--- a/lib/genalloc.c
+++ b/lib/genalloc.c
@@ -187,7 +187,7 @@ int gen_pool_add_virt(struct gen_pool *pool, unsigned long virt, phys_addr_t phy
 	int nbytes = sizeof(struct gen_pool_chunk) +
 				BITS_TO_LONGS(nbits) * sizeof(long);
 
-	chunk = kzalloc_node(nbytes, GFP_KERNEL, nid);
+	chunk = vzalloc_node(nbytes, nid);
 	if (unlikely(chunk == NULL))
 		return -ENOMEM;
 
-- 
2.17.1