linux-kernel - [GIT PULL] please pull infiniband.git

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Message-ID: <adaej6o5518.fsf@cisco.com>
Date:	Mon, 23 Jun 2008 12:23:47 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org
Cc:	general@...ts.openfabrics.org, linux-kernel@...r.kernel.org
Subject: [GIT PULL] please pull infiniband.git

Linus, please pull from

    master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git for-linus

This tree is also available from kernel.org mirrors at:

    git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git for-linus

This will get a fix for one rare bug seen by SGI on large clusters:

Eli Cohen (1):
      IB/mthca: Clear ICM pages before handing to FW

 drivers/infiniband/hw/mthca/mthca_memfree.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c
index b224079..d5862e5 100644
--- a/drivers/infiniband/hw/mthca/mthca_memfree.c
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.c
@@ -109,7 +109,11 @@ static int mthca_alloc_icm_pages(struct scatterlist *mem, int order, gfp_t gfp_m
 {
 	struct page *page;
 
-	page = alloc_pages(gfp_mask, order);
+	/*
+	 * Use __GFP_ZERO because buggy firmware assumes ICM pages are
+	 * cleared, and subtle failures are seen if they aren't.
+	 */
+	page = alloc_pages(gfp_mask | __GFP_ZERO, order);
 	if (!page)
 		return -ENOMEM;
 
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