linux-kernel - [PATCH 3/6] Handle possible bio_alloc failure in submit

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Date:	Tue, 14 Apr 2009 16:36:39 +0530
From:	Nikanth Karthikesan <knikanth@...e.de>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 3/6] Handle possible bio_alloc failure in submit_bh

Handle possible bio_alloc failure in submit_bh.

Signed-off-by: Nikanth Karthikesan <knikanth@...e.de>

---

Index: linux-2.6/fs/buffer.c
===================================================================
--- linux-2.6.orig/fs/buffer.c
+++ linux-2.6/fs/buffer.c
@@ -2922,6 +2922,8 @@ int submit_bh(int rw, struct buffer_head
 	 * submit_bio -> generic_make_request may further map this bio around
 	 */
 	bio = bio_alloc(GFP_NOIO, 1);
+	if (unlikely(!bio))
+		panic("Failed to allocate bio\n");
 
 	bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9);
 	bio->bi_bdev = bh->b_bdev;


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