From patchwork Wed Oct 5 12:23:04 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Sterba X-Patchwork-Id: 9362819 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A5BAF6077E for ; Wed, 5 Oct 2016 12:23:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 94514287C4 for ; Wed, 5 Oct 2016 12:23:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 853792893C; Wed, 5 Oct 2016 12:23:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6EB7B287C4 for ; Wed, 5 Oct 2016 12:23:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753846AbcJEMXN (ORCPT ); Wed, 5 Oct 2016 08:23:13 -0400 Received: from mx2.suse.de ([195.135.220.15]:40457 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752666AbcJEMXM (ORCPT ); Wed, 5 Oct 2016 08:23:12 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 71B2DACF7 for ; Wed, 5 Oct 2016 12:23:10 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id 53BC0DA8CA; Wed, 5 Oct 2016 14:23:09 +0200 (CEST) From: David Sterba To: linux-btrfs@vger.kernel.org Cc: David Sterba Subject: [PATCH] btrfs: opencode chunk locking, remove helpers Date: Wed, 5 Oct 2016 14:23:04 +0200 Message-Id: <20161005122306.3530-1-dsterba@suse.com> X-Mailer: git-send-email 2.10.0 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The helpers are trivial and we don't use them consistently. Signed-off-by: David Sterba --- fs/btrfs/disk-io.c | 4 +-- fs/btrfs/extent-tree.c | 8 +++--- fs/btrfs/free-space-cache.c | 4 +-- fs/btrfs/volumes.c | 70 ++++++++++++++++++++++----------------------- fs/btrfs/volumes.h | 10 ------- 5 files changed, 43 insertions(+), 53 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 54bc8c7c6bcd..6091663a9ed3 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3989,7 +3989,7 @@ void close_ctree(struct btrfs_root *root) __btrfs_free_block_rsv(root->orphan_block_rsv); root->orphan_block_rsv = NULL; - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); while (!list_empty(&fs_info->pinned_chunks)) { struct extent_map *em; @@ -3998,7 +3998,7 @@ void close_ctree(struct btrfs_root *root) list_del_init(&em->list); free_extent_map(em); } - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); } int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid, diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 665da8f66ff1..00e5655cfd84 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -9617,9 +9617,9 @@ int btrfs_inc_block_group_ro(struct btrfs_root *root, out: if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM) { alloc_flags = update_block_group_flags(root, cache->flags); - lock_chunks(root->fs_info->chunk_root); + mutex_lock(&root->fs_info->chunk_mutex); check_system_chunk(trans, root, alloc_flags); - unlock_chunks(root->fs_info->chunk_root); + mutex_unlock(&root->fs_info->chunk_mutex); } mutex_unlock(&root->fs_info->ro_block_group_mutex); @@ -10647,7 +10647,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans, memcpy(&key, &block_group->key, sizeof(key)); - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); if (!list_empty(&em->list)) { /* We're in the transaction->pending_chunks list. */ free_extent_map(em); @@ -10715,7 +10715,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans, free_extent_map(em); } - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); ret = remove_block_group_free_space(trans, root->fs_info, block_group); if (ret) diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index d571bd2b697b..0e33d3d84870 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -3328,7 +3328,7 @@ void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *block_group) spin_unlock(&block_group->lock); if (cleanup) { - lock_chunks(block_group->fs_info->chunk_root); + mutex_lock(&block_group->fs_info->chunk_mutex); em_tree = &block_group->fs_info->mapping_tree.map_tree; write_lock(&em_tree->lock); em = lookup_extent_mapping(em_tree, block_group->key.objectid, @@ -3340,7 +3340,7 @@ void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *block_group) */ remove_extent_mapping(em_tree, em); write_unlock(&em_tree->lock); - unlock_chunks(block_group->fs_info->chunk_root); + mutex_unlock(&block_group->fs_info->chunk_mutex); /* once for us and once for the tree */ free_extent_map(em); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 035efce603a9..cc31b39160be 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1878,10 +1878,10 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) } if (device->writeable) { - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); list_del_init(&device->dev_alloc_list); device->fs_devices->rw_devices--; - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); dev_name = kstrdup(device->name->str, GFP_KERNEL); if (!dev_name) { ret = -ENOMEM; @@ -1985,11 +1985,11 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) error_undo: if (device->writeable) { - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); list_add(&device->dev_alloc_list, &root->fs_info->fs_devices->alloc_list); device->fs_devices->rw_devices++; - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); } goto out; } @@ -2216,9 +2216,9 @@ static int btrfs_prepare_sprout(struct btrfs_root *root) list_for_each_entry(device, &seed_devices->devices, dev_list) device->fs_devices = seed_devices; - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); list_splice_init(&fs_devices->alloc_list, &seed_devices->alloc_list); - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); fs_devices->seeding = 0; fs_devices->num_devices = 0; @@ -2407,7 +2407,7 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) device->fs_devices = root->fs_info->fs_devices; mutex_lock(&root->fs_info->fs_devices->device_list_mutex); - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); list_add_rcu(&device->dev_list, &root->fs_info->fs_devices->devices); list_add(&device->dev_alloc_list, &root->fs_info->fs_devices->alloc_list); @@ -2441,13 +2441,13 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) */ btrfs_clear_space_info_full(root->fs_info); - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); if (seeding_dev) { - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); ret = init_first_rw_device(trans, root, device); - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); if (ret) { btrfs_abort_transaction(trans, ret); goto error_trans; @@ -2691,13 +2691,13 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, if (!device->writeable) return -EACCES; - lock_chunks(device->dev_root); + mutex_lock(&device->dev_root->fs_info->chunk_mutex); old_total = btrfs_super_total_bytes(super_copy); diff = new_size - device->total_bytes; if (new_size <= device->total_bytes || device->is_tgtdev_for_dev_replace) { - unlock_chunks(device->dev_root); + mutex_unlock(&device->dev_root->fs_info->chunk_mutex); return -EINVAL; } @@ -2712,7 +2712,7 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, if (list_empty(&device->resized_list)) list_add_tail(&device->resized_list, &fs_devices->resized_devices); - unlock_chunks(device->dev_root); + mutex_unlock(&device->dev_root->fs_info->chunk_mutex); return btrfs_update_device(trans, device); } @@ -2767,7 +2767,7 @@ static int btrfs_del_sys_chunk(struct btrfs_root *root, u64 chunk_objectid, u64 u32 cur; struct btrfs_key key; - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); array_size = btrfs_super_sys_array_size(super_copy); ptr = super_copy->sys_chunk_array; @@ -2797,7 +2797,7 @@ static int btrfs_del_sys_chunk(struct btrfs_root *root, u64 chunk_objectid, u64 cur += len; } } - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); return ret; } @@ -2834,9 +2834,9 @@ int btrfs_remove_chunk(struct btrfs_trans_handle *trans, return -EINVAL; } map = em->map_lookup; - lock_chunks(root->fs_info->chunk_root); + mutex_lock(&root->fs_info->chunk_mutex); check_system_chunk(trans, extent_root, map->type); - unlock_chunks(root->fs_info->chunk_root); + mutex_unlock(&root->fs_info->chunk_mutex); /* * Take the device list mutex to prevent races with the final phase of @@ -2856,14 +2856,14 @@ int btrfs_remove_chunk(struct btrfs_trans_handle *trans, } if (device->bytes_used > 0) { - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); btrfs_device_set_bytes_used(device, device->bytes_used - dev_extent_len); spin_lock(&root->fs_info->free_chunk_lock); root->fs_info->free_chunk_space += dev_extent_len; spin_unlock(&root->fs_info->free_chunk_lock); btrfs_clear_space_info_full(root->fs_info); - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); } if (map->stripes[i].dev) { @@ -4383,7 +4383,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) path->reada = READA_FORWARD; - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); btrfs_device_set_total_bytes(device, new_size); if (device->writeable) { @@ -4392,7 +4392,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) root->fs_info->free_chunk_space -= diff; spin_unlock(&root->fs_info->free_chunk_lock); } - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); again: key.objectid = device->devid; @@ -4464,7 +4464,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) goto done; } - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); /* * We checked in the above loop all device extents that were already in @@ -4484,7 +4484,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) if (contains_pending_extent(trans->transaction, device, &start, len)) { - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); checked_pending_chunks = true; failed = 0; retried = false; @@ -4502,7 +4502,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) WARN_ON(diff > old_total); btrfs_set_super_total_bytes(super_copy, old_total - diff); - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); /* Now btrfs_update_device() will change the on-disk size. */ ret = btrfs_update_device(trans, device); @@ -4510,14 +4510,14 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) done: btrfs_free_path(path); if (ret) { - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); btrfs_device_set_total_bytes(device, old_size); if (device->writeable) device->fs_devices->total_rw_bytes += diff; spin_lock(&root->fs_info->free_chunk_lock); root->fs_info->free_chunk_space += diff; spin_unlock(&root->fs_info->free_chunk_lock); - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); } return ret; } @@ -4531,11 +4531,11 @@ static int btrfs_add_system_chunk(struct btrfs_root *root, u32 array_size; u8 *ptr; - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); array_size = btrfs_super_sys_array_size(super_copy); if (array_size + item_size + sizeof(disk_key) > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE) { - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); return -EFBIG; } @@ -4546,7 +4546,7 @@ static int btrfs_add_system_chunk(struct btrfs_root *root, memcpy(ptr, chunk, item_size); item_size += sizeof(disk_key); btrfs_set_super_sys_array_size(super_copy, array_size + item_size); - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); return 0; } @@ -6795,7 +6795,7 @@ int btrfs_read_chunk_tree(struct btrfs_root *root) return -ENOMEM; mutex_lock(&uuid_mutex); - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); /* * Read all device items, and then all the chunk items. All @@ -6862,7 +6862,7 @@ int btrfs_read_chunk_tree(struct btrfs_root *root) } ret = 0; error: - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); mutex_unlock(&uuid_mutex); btrfs_free_path(path); @@ -7161,13 +7161,13 @@ void btrfs_update_commit_device_size(struct btrfs_fs_info *fs_info) return; mutex_lock(&fs_devices->device_list_mutex); - lock_chunks(fs_info->dev_root); + mutex_lock(&fs_info->dev_root->fs_info->chunk_mutex); list_for_each_entry_safe(curr, next, &fs_devices->resized_devices, resized_list) { list_del_init(&curr->resized_list); curr->commit_total_bytes = curr->disk_total_bytes; } - unlock_chunks(fs_info->dev_root); + mutex_unlock(&fs_info->dev_root->fs_info->chunk_mutex); mutex_unlock(&fs_devices->device_list_mutex); } @@ -7184,7 +7184,7 @@ void btrfs_update_commit_device_bytes_used(struct btrfs_root *root, return; /* In order to kick the device replace finish process */ - lock_chunks(root); + mutex_lock(&root->fs_info->chunk_mutex); list_for_each_entry(em, &transaction->pending_chunks, list) { map = em->map_lookup; @@ -7193,7 +7193,7 @@ void btrfs_update_commit_device_bytes_used(struct btrfs_root *root, dev->commit_bytes_used = dev->bytes_used; } } - unlock_chunks(root); + mutex_unlock(&root->fs_info->chunk_mutex); } void btrfs_set_fs_info_ptr(struct btrfs_fs_info *fs_info) diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 6613e6335ca2..6f9422013715 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -512,16 +512,6 @@ void btrfs_update_commit_device_size(struct btrfs_fs_info *fs_info); void btrfs_update_commit_device_bytes_used(struct btrfs_root *root, struct btrfs_transaction *transaction); -static inline void lock_chunks(struct btrfs_root *root) -{ - mutex_lock(&root->fs_info->chunk_mutex); -} - -static inline void unlock_chunks(struct btrfs_root *root) -{ - mutex_unlock(&root->fs_info->chunk_mutex); -} - struct list_head *btrfs_get_fs_uuids(void); void btrfs_set_fs_info_ptr(struct btrfs_fs_info *fs_info); void btrfs_reset_fs_info_ptr(struct btrfs_fs_info *fs_info);