Hi Anand, Would you please push patch 1~6 in your hot spare patchset to Chris first?
In my opinion, it will need some time before some details like whether to do hot-spare in kernel or in user-space are settled.
And all these 6 patches are quite independent from the hot spare patchset. So it would be OK to push them into mainline in this or next merge windows. Thanks, Qu On 11/09/2015 06:56 PM, Anand Jain wrote:
From: Qu Wenruo <[email protected]> As we use per-chunk degradable check, now the global num_tolerated_disk_barrier_failures is of no use. So cleanup it. Signed-off-by: Qu Wenruo <[email protected]> [Btrfs: resolve conflict to apply 'btrfs: Cleanup num_tolerated_disk_barrier_failures'] Signed-off-by: Anand Jain <[email protected]> --- fs/btrfs/ctree.h | 2 -- fs/btrfs/disk-io.c | 56 ------------------------------------------------------ fs/btrfs/disk-io.h | 2 -- fs/btrfs/volumes.c | 17 ----------------- 4 files changed, 77 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index a86051e..dedd3e0 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1753,8 +1753,6 @@ struct btrfs_fs_info { /* next backup root to be overwritten */ int backup_root_index; - int num_tolerated_disk_barrier_failures; - /* device replace state */ struct btrfs_dev_replace dev_replace; diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index d3303f9..d10ef2e 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2965,8 +2965,6 @@ retry_root_backup: printk(KERN_ERR "BTRFS: Failed to read block groups: %d\n", ret); goto fail_sysfs; } - fs_info->num_tolerated_disk_barrier_failures = - btrfs_calc_num_tolerated_disk_barrier_failures(fs_info); fs_info->cleaner_kthread = kthread_run(cleaner_kthread, tree_root, "btrfs-cleaner"); @@ -3498,60 +3496,6 @@ int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags) return 0; } -int btrfs_calc_num_tolerated_disk_barrier_failures( - struct btrfs_fs_info *fs_info) -{ - struct btrfs_ioctl_space_info space; - struct btrfs_space_info *sinfo; - u64 types[] = {BTRFS_BLOCK_GROUP_DATA, - BTRFS_BLOCK_GROUP_SYSTEM, - BTRFS_BLOCK_GROUP_METADATA, - BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA}; - int i; - int c; - int num_tolerated_disk_barrier_failures = - (int)fs_info->fs_devices->num_devices; - - for (i = 0; i < ARRAY_SIZE(types); i++) { - struct btrfs_space_info *tmp; - - sinfo = NULL; - rcu_read_lock(); - list_for_each_entry_rcu(tmp, &fs_info->space_info, list) { - if (tmp->flags == types[i]) { - sinfo = tmp; - break; - } - } - rcu_read_unlock(); - - if (!sinfo) - continue; - - down_read(&sinfo->groups_sem); - for (c = 0; c < BTRFS_NR_RAID_TYPES; c++) { - u64 flags; - - if (list_empty(&sinfo->block_groups[c])) - continue; - - btrfs_get_block_group_info(&sinfo->block_groups[c], - &space); - if (space.total_bytes == 0 || space.used_bytes == 0) - continue; - flags = space.flags; - - num_tolerated_disk_barrier_failures = min( - num_tolerated_disk_barrier_failures, - btrfs_get_num_tolerated_disk_barrier_failures( - flags)); - } - up_read(&sinfo->groups_sem); - } - - return num_tolerated_disk_barrier_failures; -} - static int write_all_supers(struct btrfs_root *root, int max_mirrors) { struct list_head *head; diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index adeb318..6dc5fd3 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -142,8 +142,6 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans, int btree_lock_page_hook(struct page *page, void *data, void (*flush_fn)(void *)); int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags); -int btrfs_calc_num_tolerated_disk_barrier_failures( - struct btrfs_fs_info *fs_info); int __init btrfs_end_io_wq_init(void); void btrfs_end_io_wq_exit(void); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index a5262bf..33ad42e 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1782,9 +1782,6 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) free_fs_devices(cur_devices); } - root->fs_info->num_tolerated_disk_barrier_failures = - btrfs_calc_num_tolerated_disk_barrier_failures(root->fs_info); - /* * at this point, the device is zero sized. We want to * remove it from the devices list and zero out the old super @@ -2289,8 +2286,6 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) } } - root->fs_info->num_tolerated_disk_barrier_failures = - btrfs_calc_num_tolerated_disk_barrier_failures(root->fs_info); ret = btrfs_commit_transaction(trans, root); if (seeding_dev) { @@ -3518,13 +3513,6 @@ int btrfs_balance(struct btrfs_balance_control *bctl, } } while (read_seqretry(&fs_info->profiles_lock, seq)); - if (bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) { - fs_info->num_tolerated_disk_barrier_failures = min( - btrfs_calc_num_tolerated_disk_barrier_failures(fs_info), - btrfs_get_num_tolerated_disk_barrier_failures( - bctl->sys.target)); - } - ret = insert_balance_item(fs_info->tree_root, bctl); if (ret && ret != -EEXIST) goto out; @@ -3547,11 +3535,6 @@ int btrfs_balance(struct btrfs_balance_control *bctl, mutex_lock(&fs_info->balance_mutex); atomic_dec(&fs_info->balance_running); - if (bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) { - fs_info->num_tolerated_disk_barrier_failures = - btrfs_calc_num_tolerated_disk_barrier_failures(fs_info); - } - if (bargs) { memset(bargs, 0, sizeof(*bargs)); update_ioctl_balance_args(fs_info, 0, bargs);
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