From: Chao Yu <yuchao0@huawei.com>
Date: Mon, 27 Feb 2017 10:43:13 +0000 (+0800)
Subject: f2fs: fix to enlarge size of write_io_dummy mempool
X-Git-Tag: v4.11-rc1~34^2~6
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=a3ebfe4fd89794df8b2f357ac5f665052e74b4f9;p=linux.git

f2fs: fix to enlarge size of write_io_dummy mempool

It needs to double cache size of write_io_dummy mempool, otherwise we may
run out of cache in scenraio of Data/Node IOs were issued concurrently.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 53305880c455..7571eb297b21 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1929,7 +1929,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 
 	if (F2FS_IO_SIZE(sbi) > 1) {
 		sbi->write_io_dummy =
-			mempool_create_page_pool(F2FS_IO_SIZE(sbi) - 1, 0);
+			mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
 		if (!sbi->write_io_dummy)
 			goto free_options;
 	}