From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755884AbbIMMiQ (ORCPT ); Sun, 13 Sep 2015 08:38:16 -0400 Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]:50399 "EHLO mail3-relais-sop.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753150AbbIMMZ6 (ORCPT ); Sun, 13 Sep 2015 08:25:58 -0400 X-IronPort-AV: E=Sophos;i="5.17,522,1437429600"; d="scan'208";a="145607427" From: Julia Lawall To: Chris Mason Cc: sergey.senozhatsky@gmail.com, kernel-janitors@vger.kernel.org, Josef Bacik , David Sterba , linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 06/39] Btrfs: drop null test before destroy functions Date: Sun, 13 Sep 2015 14:14:59 +0200 Message-Id: <1442146532-9100-7-git-send-email-Julia.Lawall@lip6.fr> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1442146532-9100-1-git-send-email-Julia.Lawall@lip6.fr> References: <1442146532-9100-1-git-send-email-Julia.Lawall@lip6.fr> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Remove unneeded NULL test. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x; @@ -if (x != NULL) \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x); // Signed-off-by: Julia Lawall --- fs/btrfs/backref.c | 3 +-- fs/btrfs/delayed-inode.c | 3 +-- fs/btrfs/delayed-ref.c | 12 ++++-------- fs/btrfs/disk-io.c | 3 +-- fs/btrfs/extent_io.c | 6 ++---- fs/btrfs/extent_map.c | 3 +-- fs/btrfs/file.c | 3 +-- fs/btrfs/inode.c | 18 ++++++------------ fs/btrfs/ordered-data.c | 3 +-- 9 files changed, 18 insertions(+), 36 deletions(-) diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 6a98bdd..6416c11 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -20,8 +20,7 @@ int __init extent_map_init(void) void extent_map_exit(void) { - if (extent_map_cache) - kmem_cache_destroy(extent_map_cache); + kmem_cache_destroy(extent_map_cache); } /** diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c index ac3e81d..54ae98d 100644 --- a/fs/btrfs/delayed-ref.c +++ b/fs/btrfs/delayed-ref.c @@ -787,14 +787,10 @@ btrfs_find_delayed_ref_head(struct btrfs_trans_handle *trans, u64 bytenr) void btrfs_delayed_ref_exit(void) { - if (btrfs_delayed_ref_head_cachep) - kmem_cache_destroy(btrfs_delayed_ref_head_cachep); - if (btrfs_delayed_tree_ref_cachep) - kmem_cache_destroy(btrfs_delayed_tree_ref_cachep); - if (btrfs_delayed_data_ref_cachep) - kmem_cache_destroy(btrfs_delayed_data_ref_cachep); - if (btrfs_delayed_extent_op_cachep) - kmem_cache_destroy(btrfs_delayed_extent_op_cachep); + kmem_cache_destroy(btrfs_delayed_ref_head_cachep); + kmem_cache_destroy(btrfs_delayed_tree_ref_cachep); + kmem_cache_destroy(btrfs_delayed_data_ref_cachep); + kmem_cache_destroy(btrfs_delayed_extent_op_cachep); } int btrfs_delayed_ref_init(void) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 0d98aee..6cc044d 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -103,8 +103,7 @@ int __init btrfs_end_io_wq_init(void) void btrfs_end_io_wq_exit(void) { - if (btrfs_end_io_wq_cache) - kmem_cache_destroy(btrfs_end_io_wq_cache); + kmem_cache_destroy(btrfs_end_io_wq_cache); } /* diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index a2ae427..1fb6ce3 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -43,8 +43,7 @@ int __init btrfs_delayed_inode_init(void) void btrfs_delayed_inode_exit(void) { - if (delayed_node_cache) - kmem_cache_destroy(delayed_node_cache); + kmem_cache_destroy(delayed_node_cache); } static inline void btrfs_init_delayed_node( diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index b823fac..c8d0210 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2820,8 +2820,7 @@ const struct file_operations btrfs_file_operations = { void btrfs_auto_defrag_exit(void) { - if (btrfs_inode_defrag_cachep) - kmem_cache_destroy(btrfs_inode_defrag_cachep); + kmem_cache_destroy(btrfs_inode_defrag_cachep); } int btrfs_auto_defrag_init(void) diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 52170cf..2e5a1e1 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -1072,6 +1072,5 @@ int __init ordered_data_init(void) void ordered_data_exit(void) { - if (btrfs_ordered_extent_cache) - kmem_cache_destroy(btrfs_ordered_extent_cache); + kmem_cache_destroy(btrfs_ordered_extent_cache); } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index a0fa725..c7904d3 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -9031,18 +9031,12 @@ void btrfs_destroy_cachep(void) * destroy cache. */ rcu_barrier(); - if (btrfs_inode_cachep) - kmem_cache_destroy(btrfs_inode_cachep); - if (btrfs_trans_handle_cachep) - kmem_cache_destroy(btrfs_trans_handle_cachep); - if (btrfs_transaction_cachep) - kmem_cache_destroy(btrfs_transaction_cachep); - if (btrfs_path_cachep) - kmem_cache_destroy(btrfs_path_cachep); - if (btrfs_free_space_cachep) - kmem_cache_destroy(btrfs_free_space_cachep); - if (btrfs_delalloc_work_cachep) - kmem_cache_destroy(btrfs_delalloc_work_cachep); + kmem_cache_destroy(btrfs_inode_cachep); + kmem_cache_destroy(btrfs_trans_handle_cachep); + kmem_cache_destroy(btrfs_transaction_cachep); + kmem_cache_destroy(btrfs_path_cachep); + kmem_cache_destroy(btrfs_free_space_cachep); + kmem_cache_destroy(btrfs_delalloc_work_cachep); } int btrfs_init_cachep(void) diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index ecbc63d..6763b1f 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -148,8 +148,7 @@ int __init btrfs_prelim_ref_init(void) void btrfs_prelim_ref_exit(void) { - if (btrfs_prelim_ref_cache) - kmem_cache_destroy(btrfs_prelim_ref_cache); + kmem_cache_destroy(btrfs_prelim_ref_cache); } /* diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index f1018cf..b538b3e 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -187,10 +187,8 @@ void extent_io_exit(void) * destroy caches. */ rcu_barrier(); - if (extent_state_cache) - kmem_cache_destroy(extent_state_cache); - if (extent_buffer_cache) - kmem_cache_destroy(extent_buffer_cache); + kmem_cache_destroy(extent_state_cache); + kmem_cache_destroy(extent_buffer_cache); if (btrfs_bioset) bioset_free(btrfs_bioset); } From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julia Lawall Date: Sun, 13 Sep 2015 12:14:59 +0000 Subject: [PATCH 06/39] Btrfs: drop null test before destroy functions Message-Id: <1442146532-9100-7-git-send-email-Julia.Lawall@lip6.fr> List-Id: References: <1442146532-9100-1-git-send-email-Julia.Lawall@lip6.fr> In-Reply-To: <1442146532-9100-1-git-send-email-Julia.Lawall@lip6.fr> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Chris Mason Cc: sergey.senozhatsky@gmail.com, kernel-janitors@vger.kernel.org, Josef Bacik , David Sterba , linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org Remove unneeded NULL test. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x; @@ -if (x != NULL) \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x); // Signed-off-by: Julia Lawall --- fs/btrfs/backref.c | 3 +-- fs/btrfs/delayed-inode.c | 3 +-- fs/btrfs/delayed-ref.c | 12 ++++-------- fs/btrfs/disk-io.c | 3 +-- fs/btrfs/extent_io.c | 6 ++---- fs/btrfs/extent_map.c | 3 +-- fs/btrfs/file.c | 3 +-- fs/btrfs/inode.c | 18 ++++++------------ fs/btrfs/ordered-data.c | 3 +-- 9 files changed, 18 insertions(+), 36 deletions(-) diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 6a98bdd..6416c11 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -20,8 +20,7 @@ int __init extent_map_init(void) void extent_map_exit(void) { - if (extent_map_cache) - kmem_cache_destroy(extent_map_cache); + kmem_cache_destroy(extent_map_cache); } /** diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c index ac3e81d..54ae98d 100644 --- a/fs/btrfs/delayed-ref.c +++ b/fs/btrfs/delayed-ref.c @@ -787,14 +787,10 @@ btrfs_find_delayed_ref_head(struct btrfs_trans_handle *trans, u64 bytenr) void btrfs_delayed_ref_exit(void) { - if (btrfs_delayed_ref_head_cachep) - kmem_cache_destroy(btrfs_delayed_ref_head_cachep); - if (btrfs_delayed_tree_ref_cachep) - kmem_cache_destroy(btrfs_delayed_tree_ref_cachep); - if (btrfs_delayed_data_ref_cachep) - kmem_cache_destroy(btrfs_delayed_data_ref_cachep); - if (btrfs_delayed_extent_op_cachep) - kmem_cache_destroy(btrfs_delayed_extent_op_cachep); + kmem_cache_destroy(btrfs_delayed_ref_head_cachep); + kmem_cache_destroy(btrfs_delayed_tree_ref_cachep); + kmem_cache_destroy(btrfs_delayed_data_ref_cachep); + kmem_cache_destroy(btrfs_delayed_extent_op_cachep); } int btrfs_delayed_ref_init(void) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 0d98aee..6cc044d 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -103,8 +103,7 @@ int __init btrfs_end_io_wq_init(void) void btrfs_end_io_wq_exit(void) { - if (btrfs_end_io_wq_cache) - kmem_cache_destroy(btrfs_end_io_wq_cache); + kmem_cache_destroy(btrfs_end_io_wq_cache); } /* diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index a2ae427..1fb6ce3 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -43,8 +43,7 @@ int __init btrfs_delayed_inode_init(void) void btrfs_delayed_inode_exit(void) { - if (delayed_node_cache) - kmem_cache_destroy(delayed_node_cache); + kmem_cache_destroy(delayed_node_cache); } static inline void btrfs_init_delayed_node( diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index b823fac..c8d0210 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2820,8 +2820,7 @@ const struct file_operations btrfs_file_operations = { void btrfs_auto_defrag_exit(void) { - if (btrfs_inode_defrag_cachep) - kmem_cache_destroy(btrfs_inode_defrag_cachep); + kmem_cache_destroy(btrfs_inode_defrag_cachep); } int btrfs_auto_defrag_init(void) diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 52170cf..2e5a1e1 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -1072,6 +1072,5 @@ int __init ordered_data_init(void) void ordered_data_exit(void) { - if (btrfs_ordered_extent_cache) - kmem_cache_destroy(btrfs_ordered_extent_cache); + kmem_cache_destroy(btrfs_ordered_extent_cache); } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index a0fa725..c7904d3 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -9031,18 +9031,12 @@ void btrfs_destroy_cachep(void) * destroy cache. */ rcu_barrier(); - if (btrfs_inode_cachep) - kmem_cache_destroy(btrfs_inode_cachep); - if (btrfs_trans_handle_cachep) - kmem_cache_destroy(btrfs_trans_handle_cachep); - if (btrfs_transaction_cachep) - kmem_cache_destroy(btrfs_transaction_cachep); - if (btrfs_path_cachep) - kmem_cache_destroy(btrfs_path_cachep); - if (btrfs_free_space_cachep) - kmem_cache_destroy(btrfs_free_space_cachep); - if (btrfs_delalloc_work_cachep) - kmem_cache_destroy(btrfs_delalloc_work_cachep); + kmem_cache_destroy(btrfs_inode_cachep); + kmem_cache_destroy(btrfs_trans_handle_cachep); + kmem_cache_destroy(btrfs_transaction_cachep); + kmem_cache_destroy(btrfs_path_cachep); + kmem_cache_destroy(btrfs_free_space_cachep); + kmem_cache_destroy(btrfs_delalloc_work_cachep); } int btrfs_init_cachep(void) diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index ecbc63d..6763b1f 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -148,8 +148,7 @@ int __init btrfs_prelim_ref_init(void) void btrfs_prelim_ref_exit(void) { - if (btrfs_prelim_ref_cache) - kmem_cache_destroy(btrfs_prelim_ref_cache); + kmem_cache_destroy(btrfs_prelim_ref_cache); } /* diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index f1018cf..b538b3e 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -187,10 +187,8 @@ void extent_io_exit(void) * destroy caches. */ rcu_barrier(); - if (extent_state_cache) - kmem_cache_destroy(extent_state_cache); - if (extent_buffer_cache) - kmem_cache_destroy(extent_buffer_cache); + kmem_cache_destroy(extent_state_cache); + kmem_cache_destroy(extent_buffer_cache); if (btrfs_bioset) bioset_free(btrfs_bioset); }