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| author | Nikolay Borisov <nborisov@suse.com> | 2019-11-19 15:05:51 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-01-23 19:24:34 +0300 |
| commit | b3ad2c17fd80f2db3b824c28691adaaa4ffa2fc4 (patch) | |
| tree | feecec19b993bf7e11b001766d14d60adc1a6793 | |
| parent | 96a14336bd8fc13cc3db036a5745acdf3bc185f4 (diff) | |
| download | linux-b3ad2c17fd80f2db3b824c28691adaaa4ffa2fc4.tar.xz | |
btrfs: selftests: Add support for dummy devices
Add basic infrastructure to create and link dummy btrfs_devices. This
will be used in the pending btrfs_rmap_block test which deals with
the block groups.
Calling btrfs_alloc_dummy_device will link the newly created device to
the passed fs_info and the test framework will free them once the test
is finished.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/tests/btrfs-tests.c | 29 | ||||
| -rw-r--r-- | fs/btrfs/tests/btrfs-tests.h | 1 |
2 files changed, 30 insertions, 0 deletions
diff --git a/fs/btrfs/tests/btrfs-tests.c b/fs/btrfs/tests/btrfs-tests.c index a7aca4141788..c12b91ff5f56 100644 --- a/fs/btrfs/tests/btrfs-tests.c +++ b/fs/btrfs/tests/btrfs-tests.c @@ -86,6 +86,27 @@ static void btrfs_destroy_test_fs(void) unregister_filesystem(&test_type); } +struct btrfs_device *btrfs_alloc_dummy_device(struct btrfs_fs_info *fs_info) +{ + struct btrfs_device *dev; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return ERR_PTR(-ENOMEM); + + extent_io_tree_init(NULL, &dev->alloc_state, 0, NULL); + INIT_LIST_HEAD(&dev->dev_list); + list_add(&dev->dev_list, &fs_info->fs_devices->devices); + + return dev; +} + +static void btrfs_free_dummy_device(struct btrfs_device *dev) +{ + extent_io_tree_release(&dev->alloc_state); + kfree(dev); +} + struct btrfs_fs_info *btrfs_alloc_dummy_fs_info(u32 nodesize, u32 sectorsize) { struct btrfs_fs_info *fs_info = kzalloc(sizeof(struct btrfs_fs_info), @@ -132,12 +153,14 @@ struct btrfs_fs_info *btrfs_alloc_dummy_fs_info(u32 nodesize, u32 sectorsize) INIT_LIST_HEAD(&fs_info->dirty_qgroups); INIT_LIST_HEAD(&fs_info->dead_roots); INIT_LIST_HEAD(&fs_info->tree_mod_seq_list); + INIT_LIST_HEAD(&fs_info->fs_devices->devices); INIT_RADIX_TREE(&fs_info->buffer_radix, GFP_ATOMIC); INIT_RADIX_TREE(&fs_info->fs_roots_radix, GFP_ATOMIC); extent_io_tree_init(fs_info, &fs_info->freed_extents[0], IO_TREE_FS_INFO_FREED_EXTENTS0, NULL); extent_io_tree_init(fs_info, &fs_info->freed_extents[1], IO_TREE_FS_INFO_FREED_EXTENTS1, NULL); + extent_map_tree_init(&fs_info->mapping_tree); fs_info->pinned_extents = &fs_info->freed_extents[0]; set_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state); @@ -150,6 +173,7 @@ void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info) { struct radix_tree_iter iter; void **slot; + struct btrfs_device *dev, *tmp; if (!fs_info) return; @@ -180,6 +204,11 @@ void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info) } spin_unlock(&fs_info->buffer_lock); + btrfs_mapping_tree_free(&fs_info->mapping_tree); + list_for_each_entry_safe(dev, tmp, &fs_info->fs_devices->devices, + dev_list) { + btrfs_free_dummy_device(dev); + } btrfs_free_qgroup_config(fs_info); btrfs_free_fs_roots(fs_info); cleanup_srcu_struct(&fs_info->subvol_srcu); diff --git a/fs/btrfs/tests/btrfs-tests.h b/fs/btrfs/tests/btrfs-tests.h index 9e52527357d8..7a2d7ffbe30e 100644 --- a/fs/btrfs/tests/btrfs-tests.h +++ b/fs/btrfs/tests/btrfs-tests.h @@ -46,6 +46,7 @@ btrfs_alloc_dummy_block_group(struct btrfs_fs_info *fs_info, unsigned long lengt void btrfs_free_dummy_block_group(struct btrfs_block_group *cache); void btrfs_init_dummy_trans(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info); +struct btrfs_device *btrfs_alloc_dummy_device(struct btrfs_fs_info *fs_info); #else static inline int btrfs_run_sanity_tests(void) { |