Patch "Fix slab name "biovec-(1<<(21-12))"" has been added to the 4.9-stable tree

Patch "Fix slab name "biovec-(1<<(21-12))"" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     fix-slab-name-biovec-1-21-12.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From bd5c4facf59648581d2f1692dad7b107bf429954 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@redhat.com>
Date: Wed, 21 Mar 2018 12:49:29 -0400
Subject: Fix slab name "biovec-(1<<(21-12))"

From: Mikulas Patocka <mpatocka@redhat.com>

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>

---
 block/bio.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- 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
 


Patches currently in stable-queue which might be from mpatocka@redhat.com are

queue-4.9/fix-slab-name-biovec-1-21-12.patch