Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933989AbbHLI5S (ORCPT ); Wed, 12 Aug 2015 04:57:18 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:60356 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933784AbbHLI5J (ORCPT ); Wed, 12 Aug 2015 04:57:09 -0400 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Filipe Manana , Chris Mason , Luis Henriques Subject: [PATCH 3.16.y-ckt 003/118] Btrfs: use kmem_cache_free when freeing entry in inode cache Date: Wed, 12 Aug 2015 09:55:05 +0100 Message-Id: <1439369820-27005-4-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1439369820-27005-1-git-send-email-luis.henriques@canonical.com> References: <1439369820-27005-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.16 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1581 Lines: 49 3.16.7-ckt16 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Filipe Manana commit c3f4a1685bb87e59c886ee68f7967eae07d4dffa upstream. The free space entries are allocated using kmem_cache_zalloc(), through __btrfs_add_free_space(), therefore we should use kmem_cache_free() and not kfree() to avoid any confusion and any potential problem. Looking at the kfree() definition at mm/slab.c it has the following comment: /* * (...) * * Don't free memory not originally allocated by kmalloc() * or you will run into trouble. */ So better be safe and use kmem_cache_free(). Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: Chris Mason Signed-off-by: Luis Henriques --- fs/btrfs/inode-map.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index 888fbe19079f..f25c68d84811 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -271,7 +271,7 @@ void btrfs_unpin_free_ino(struct btrfs_root *root) __btrfs_add_free_space(ctl, info->offset, count); free: rb_erase(&info->offset_index, rbroot); - kfree(info); + kmem_cache_free(btrfs_free_space_cachep, info); } } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/