[PATCH] Change the total_dirty from SZ_256M to SZ_64M.

[hmsjwzb]

The SZ_256M will cause trouble in platform with less than 256M memory.
For example, a qemu virtual machine.

Signed-off-by: hmsjwzb <weizhefix@xxxxxxxxx>
---
 fs/btrfs/tests/extent-io-tests.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/tests/extent-io-tests.c b/fs/btrfs/tests/extent-io-tests.c
index 9e0f4a01be14..cb23dce96a2d 100644
--- a/fs/btrfs/tests/extent-io-tests.c
+++ b/fs/btrfs/tests/extent-io-tests.c
@@ -62,7 +62,7 @@ static int test_find_delalloc(u32 sectorsize)
 	struct page *page;
 	struct page *locked_page = NULL;
 	unsigned long index = 0;
-	u64 total_dirty = SZ_256M;
+	u64 total_dirty = SZ_64M;
 	u64 max_bytes = SZ_128M;
 	u64 start, end, test_start;
 	u64 found;
-- 
2.17.1