linux-ext4 - [PATCH 1/2] ext4: Add ext4_mb_unload

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Date:	Tue, 29 May 2012 16:36:09 -0700
From:	Salman Qazi <sqazi@...gle.com>
To:	Ted Ts'o <tytso@...gle.com>, linux-ext4@...r.kernel.org
Subject: [PATCH 1/2] ext4: Add ext4_mb_unload_buddy in the error path

ext4_free_blocks fails to pair an ext4_mb_load_buddy with a matching
ext4_mb_unload_buddy when it fails a memory allocation.

Signed-off-by: Salman Qazi <sqazi@...gle.com>
---
 fs/ext4/mballoc.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 99ab428..5c315ab 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4636,6 +4636,7 @@ do_more:
 		 */
 		new_entry = kmem_cache_alloc(ext4_free_data_cachep, GFP_NOFS);
 		if (!new_entry) {
+			ext4_mb_unload_buddy(&e4b);
 			err = -ENOMEM;
 			goto error_return;
 		}

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