search for: init_rwsem

...- if (!(fs_info->sb->s_flags & MS_RDONLY)) - btrfs_orphan_cleanup(root); - return root; fail: free_fs_root(root); @@ -1689,6 +1688,7 @@ struct btrfs_root *open_ctree(struct super_block *sb, mutex_init(&fs_info->cleaner_mutex); mutex_init(&fs_info->volume_mutex); init_rwsem(&fs_info->extent_commit_sem); + init_rwsem(&fs_info->cleanup_work_sem); init_rwsem(&fs_info->subvol_sem); btrfs_init_free_cluster(&fs_info->meta_alloc_cluster); @@ -2388,6 +2388,11 @@ int btrfs_commit_super(struct btrfs_root *root) mutex_lock(&root->fs_inf...

...vers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c index aa454f8..4af3227 100644 --- a/drivers/gpu/drm/drm_stub.c +++ b/drivers/gpu/drm/drm_stub.c @@ -275,6 +275,8 @@ int drm_fill_in_dev(struct drm_device *dev, mutex_init(&dev->struct_mutex); mutex_init(&dev->ctxlist_mutex); + init_rwsem(&dev->ioctls_rwsem); + if (drm_ht_create(&dev->map_hash, 12)) { return -ENOMEM; } diff --git a/include/drm/drmP.h b/include/drm/drmP.h index dd73104..527dca5 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -954,6 +954,8 @@ struct drm_driver { int dev_priv_size;...

...ate(mvdev); > if (ndev->nb_registered && ndev->config_cb.callback) > ndev->config_cb.callback(ndev->config_cb.private); > > @@ -3172,6 +3196,7 @@ static int mlx5_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev, const char *name, > > init_mvqs(ndev); > init_rwsem(&ndev->reslock); > + spin_lock_init(&ndev->status_lock); > config = &ndev->config; > > if (add_config->mask & BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MTU)) { > diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.h b/drivers/vdpa/mlx5/net/mlx5_vnet.h > index c90a89...

...m; diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 69e9afb..b88e688 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2291,6 +2291,7 @@ int open_ctree(struct super_block *sb, mutex_init(&fs_info->cleaner_mutex); mutex_init(&fs_info->volume_mutex); init_rwsem(&fs_info->extent_commit_sem); + atomic_set(&fs_info->extent_commit_sem_give_up_read, 0); init_rwsem(&fs_info->cleanup_work_sem); init_rwsem(&fs_info->subvol_sem); sema_init(&fs_info->uuid_tree_rescan_sem, 1); diff --git a/fs/btrfs/extent-tree.c b...

...che * __btrfs_find_block_group(struct btrfs_root *root, struct btrfs_block_group_cache *hint, @@ -1446,6 +1402,7 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags, list_add(&found->list, &info->space_info); INIT_LIST_HEAD(&found->block_groups); + init_rwsem(&found->groups_sem); spin_lock_init(&found->lock); found->flags = flags; found->total_bytes = total_bytes; @@ -2208,19 +2165,22 @@ static int noinline find_free_extent(struct btrfs_trans_handle *trans, u64 exclude_start, u64 exclude_nr, int data) { - i...

.. snip.. >> Both of them (acpi-cpufreq.c and powernow-k8.c) have a symbol >> dependency on drivers/acpi/processor.c > > But them being ''m'' or ''y'' shouldn''t matter in the end. I thought you were saying it matters - as it should be done around the same time as cpufreq drivers were loaded? .. snip.. >> For a), this would mean some

..._notifier.mm, > + amn->type) == key) > goto release_locks; > > amn = kzalloc(sizeof(*amn), GFP_KERNEL); > @@ -337,10 +205,8 @@ struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev, > } > > amn->adev = adev; > - amn->mm = mm; > init_rwsem(&amn->lock); > amn->type = type; > - amn->objects = RB_ROOT_CACHED; > > amn->mirror.ops = &amdgpu_hmm_mirror_ops[type]; > r = hmm_mirror_register(&amn->mirror, mm); > @@ -369,100 +235,33 @@ struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device...

...DGPU_MN_KEY(amn->mirror.hmm->mmu_notifier.mm, > - amn->type) == key) > - goto release_locks; > - > - amn = kzalloc(sizeof(*amn), GFP_KERNEL); > - if (!amn) { > - amn = ERR_PTR(-ENOMEM); > - goto release_locks; > - } > - > - amn->adev = adev; > - init_rwsem(&amn->lock); > - amn->type = type; > - > - amn->mirror.ops = &amdgpu_hmm_mirror_ops[type]; > - r = hmm_mirror_register(&amn->mirror, mm); > - if (r) > - goto free_amn; > - > - hash_add(adev->mn_hash, &amn->node, AMDGPU_MN_KEY(mm, type)); &g...

...ch_possible(adev->mn_hash, amn, node, key) - if (AMDGPU_MN_KEY(amn->mirror.hmm->mmu_notifier.mm, - amn->type) == key) - goto release_locks; - - amn = kzalloc(sizeof(*amn), GFP_KERNEL); - if (!amn) { - amn = ERR_PTR(-ENOMEM); - goto release_locks; - } - - amn->adev = adev; - init_rwsem(&amn->lock); - amn->type = type; - - amn->mirror.ops = &amdgpu_hmm_mirror_ops[type]; - r = hmm_mirror_register(&amn->mirror, mm); - if (r) - goto free_amn; - - hash_add(adev->mn_hash, &amn->node, AMDGPU_MN_KEY(mm, type)); - -release_locks: - up_write(&mm->m...

...ch_possible(adev->mn_hash, amn, node, key) - if (AMDGPU_MN_KEY(amn->mirror.hmm->mmu_notifier.mm, - amn->type) == key) - goto release_locks; - - amn = kzalloc(sizeof(*amn), GFP_KERNEL); - if (!amn) { - amn = ERR_PTR(-ENOMEM); - goto release_locks; - } - - amn->adev = adev; - init_rwsem(&amn->lock); - amn->type = type; - - amn->mirror.ops = &amdgpu_hmm_mirror_ops[type]; - r = hmm_mirror_register(&amn->mirror, mm); - if (r) - goto free_amn; - - hash_add(adev->mn_hash, &amn->node, AMDGPU_MN_KEY(mm, type)); - -release_locks: - up_write(&mm->m...

..._notifier.mm, > + amn->type) == key) > goto release_locks; > > amn = kzalloc(sizeof(*amn), GFP_KERNEL); > @@ -337,10 +205,8 @@ struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev, > } > > amn->adev = adev; > - amn->mm = mm; > init_rwsem(&amn->lock); > amn->type = type; > - amn->objects = RB_ROOT_CACHED; > > amn->mirror.ops = &amdgpu_hmm_mirror_ops[type]; > r = hmm_mirror_register(&amn->mirror, mm); > @@ -369,100 +235,33 @@ struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device...

...) == key) + if (AMDGPU_MN_KEY(amn->mirror.hmm->mmu_notifier.mm, + amn->type) == key) goto release_locks; amn = kzalloc(sizeof(*amn), GFP_KERNEL); @@ -337,10 +205,8 @@ struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev, } amn->adev = adev; - amn->mm = mm; init_rwsem(&amn->lock); amn->type = type; - amn->objects = RB_ROOT_CACHED; amn->mirror.ops = &amdgpu_hmm_mirror_ops[type]; r = hmm_mirror_register(&amn->mirror, mm); @@ -369,100 +235,33 @@ struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev, * @bo: amdgpu buffer obj...

i_alloc_sem has always been a bit of an odd "lock". It''s the only remaining rw_semaphore that can be released by a different thread than the one that locked it, and it''s use case in the core direct I/O code is more like a counter given that the writers already have external serialization. This series removes it in favour of a simpler counter scheme, thus getting rid

...clude <linux/memory_hotplug.h> -static struct mmu_notifier *hmm_alloc_notifier(struct mm_struct *mm) -{ - struct hmm *hmm; - - hmm = kzalloc(sizeof(*hmm), GFP_KERNEL); - if (!hmm) - return ERR_PTR(-ENOMEM); - - init_waitqueue_head(&hmm->wq); - INIT_LIST_HEAD(&hmm->mirrors); - init_rwsem(&hmm->mirrors_sem); - INIT_LIST_HEAD(&hmm->ranges); - spin_lock_init(&hmm->ranges_lock); - hmm->notifiers = 0; - return &hmm->mmu_notifier; -} - -static void hmm_free_notifier(struct mmu_notifier *mn) -{ - struct hmm *hmm = container_of(mn, struct hmm, mmu_notifier);...

On Tue, Oct 29, 2019 at 07:22:37PM +0000, Yang, Philip wrote: > Hi Jason, > > I did quick test after merging amd-staging-drm-next with the > mmu_notifier branch, which includes this set changes. The test result > has different failures, app stuck intermittently, GUI no display etc. I > am understanding the changes and will try to figure out the cause. Thanks! I'm not

...riv->eng[e]->fini(dev, e, !nouveau_gpu_reset_in_progress(dev)); if (ret) { NV_ERROR(dev, "... engine %d failed: %d\n", e, ret); goto out_abort; @@ -443,11 +443,63 @@ nouveau_pci_resume(struct pci_dev *pdev) return 0; } +void intr_rwsem_init(struct intr_rwsem *r) +{ + init_rwsem(&r->rwsem); + mutex_init(&r->mutex); +} + +int intr_rwsem_down_read_interruptible(struct intr_rwsem *r) +{ + while (down_read_trylock(&r->rwsem) == 0) { + int ret = mutex_lock_interruptible(&r->mutex); + if (ret) + return ret; + mutex_unlock(&r->mutex); + } +...

VMware balloon enhancements: adding support for memory compaction, memory shrinker (to prevent OOM) and splitting of refused pages to prevent recurring inflations. Patches 1-2: Support for compaction Patch 3: Support for memory shrinker - disabled by default Patch 4: Split refused pages to improve performance v3->v4: * "get around to" comment [Michael] * Put list_add under page lock

VMware balloon enhancements: adding support for memory compaction, memory shrinker (to prevent OOM) and splitting of refused pages to prevent recurring inflations. Patches 1-2: Support for compaction Patch 3: Support for memory shrinker - disabled by default Patch 4: Split refused pages to improve performance v3->v4: * "get around to" comment [Michael] * Put list_add under page lock

From: Jason Gunthorpe <jgg at mellanox.com> 8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1, scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where they only use invalidate_range_start/end and immediately check the invalidating range against some driver data structure to tell if the driver is interested. Half of them use an interval_tree, the others

...btrfs_fs_info *fs_info, + u64 objectid) { root->node = NULL; root->commit_root = NULL; @@ -1116,8 +1116,6 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize, INIT_LIST_HEAD(&root->anon_super.s_list); INIT_LIST_HEAD(&root->anon_super.s_instances); init_rwsem(&root->anon_super.s_umount); - - return 0; } static int find_and_setup_root(struct btrfs_root *tree_root, @@ -2412,7 +2410,7 @@ int write_ctree_super(struct btrfs_trans_handle *trans, return ret; } -int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root) +void...