From: Mikulas Patocka <mpatocka@redhat.com>
Date: Wed, 21 Mar 2018 16:49:29 +0000 (-0400)
Subject: Fix slab name "biovec-(1<<(21-12))"
X-Git-Tag: android-x86-7.1-r2~1^2~20^2~7
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=6bae91221eea93a2a7d9a9dda22cf28c1c392db0;p=android-x86%2Fkernel.git

Fix slab name "biovec-(1<<(21-12))"

commit bd5c4facf59648581d2f1692dad7b107bf429954 upstream.

I'm getting a slab named "biovec-(1<<(21-12))". It is caused by unintended
expansion of the macro BIO_MAX_PAGES. This patch renames it to biovec-max.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org	# v4.14+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/block/bio.c b/block/bio.c
index 07f287b14cff..4f93345c6a82 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -42,9 +42,9 @@
  * break badly! cannot be bigger than what you can fit into an
  * unsigned short
  */
-#define BV(x) { .nr_vecs = x, .name = "biovec-"__stringify(x) }
+#define BV(x, n) { .nr_vecs = x, .name = "biovec-"#n }
 static struct biovec_slab bvec_slabs[BVEC_POOL_NR] __read_mostly = {
-	BV(1), BV(4), BV(16), BV(64), BV(128), BV(BIO_MAX_PAGES),
+	BV(1, 1), BV(4, 4), BV(16, 16), BV(64, 64), BV(128, 128), BV(BIO_MAX_PAGES, max),
 };
 #undef BV