From afcdd129e05a9210a5d19d4aa6e0afa475fc49e2 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 2 Sep 2016 15:40:02 -0400 Subject: Btrfs: add a flags field to btrfs_fs_info We have a lot of random ints in btrfs_fs_info that can be put into flags. This is mostly equivalent with the exception of how we deal with quota going on or off, now instead we set a flag when we are turning it on or off and deal with that appropriately, rather than just having a pending state that the current quota_enabled gets set to. Thanks, Signed-off-by: Josef Bacik Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 55 ++++++++++++++++++++++++++++++------------------------- 1 file changed, 30 insertions(+), 25 deletions(-) (limited to 'fs/btrfs/qgroup.c') diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 8db2e29fdcf4..13c2dc79501b 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -309,7 +309,7 @@ int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info) u64 flags = 0; u64 rescan_progress = 0; - if (!fs_info->quota_enabled) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)) return 0; fs_info->qgroup_ulist = ulist_alloc(GFP_NOFS); @@ -463,13 +463,11 @@ next2: } out: fs_info->qgroup_flags |= flags; - if (!(fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_ON)) { - fs_info->quota_enabled = 0; - fs_info->pending_quota_state = 0; - } else if (fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN && - ret >= 0) { + if (!(fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_ON)) + clear_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags); + else if (fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN && + ret >= 0) ret = qgroup_rescan_init(fs_info, rescan_progress, 0); - } btrfs_free_path(path); if (ret < 0) { @@ -847,7 +845,7 @@ static int btrfs_clean_quota_tree(struct btrfs_trans_handle *trans, } ret = 0; out: - root->fs_info->pending_quota_state = 0; + set_bit(BTRFS_FS_QUOTA_DISABLING, &root->fs_info->flags); btrfs_free_path(path); return ret; } @@ -868,7 +866,7 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans, mutex_lock(&fs_info->qgroup_ioctl_lock); if (fs_info->quota_root) { - fs_info->pending_quota_state = 1; + set_bit(BTRFS_FS_QUOTA_ENABLING, &fs_info->flags); goto out; } @@ -964,7 +962,7 @@ out_add_root: } spin_lock(&fs_info->qgroup_lock); fs_info->quota_root = quota_root; - fs_info->pending_quota_state = 1; + set_bit(BTRFS_FS_QUOTA_ENABLING, &fs_info->flags); spin_unlock(&fs_info->qgroup_lock); out_free_path: btrfs_free_path(path); @@ -993,8 +991,8 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans, mutex_lock(&fs_info->qgroup_ioctl_lock); if (!fs_info->quota_root) goto out; - fs_info->quota_enabled = 0; - fs_info->pending_quota_state = 0; + clear_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags); + set_bit(BTRFS_FS_QUOTA_DISABLING, &fs_info->flags); btrfs_qgroup_wait_for_completion(fs_info, false); spin_lock(&fs_info->qgroup_lock); quota_root = fs_info->quota_root; @@ -1490,7 +1488,8 @@ int btrfs_qgroup_insert_dirty_extent(struct btrfs_trans_handle *trans, struct btrfs_delayed_ref_root *delayed_refs; int ret; - if (!fs_info->quota_enabled || bytenr == 0 || num_bytes == 0) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) + || bytenr == 0 || num_bytes == 0) return 0; if (WARN_ON(trans == NULL)) return -EINVAL; @@ -1713,7 +1712,7 @@ btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans, if (old_roots) nr_old_roots = old_roots->nnodes; - if (!fs_info->quota_enabled) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)) goto out_free; BUG_ON(!fs_info->quota_root); @@ -1833,10 +1832,14 @@ int btrfs_run_qgroups(struct btrfs_trans_handle *trans, if (!quota_root) goto out; - if (!fs_info->quota_enabled && fs_info->pending_quota_state) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) && + test_bit(BTRFS_FS_QUOTA_ENABLING, &fs_info->flags)) start_rescan_worker = 1; - fs_info->quota_enabled = fs_info->pending_quota_state; + if (test_and_clear_bit(BTRFS_FS_QUOTA_ENABLING, &fs_info->flags)) + set_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags); + if (test_and_clear_bit(BTRFS_FS_QUOTA_DISABLING, &fs_info->flags)) + clear_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags); spin_lock(&fs_info->qgroup_lock); while (!list_empty(&fs_info->dirty_qgroups)) { @@ -1855,7 +1858,7 @@ int btrfs_run_qgroups(struct btrfs_trans_handle *trans, BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT; spin_lock(&fs_info->qgroup_lock); } - if (fs_info->quota_enabled) + if (test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_ON; else fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_ON; @@ -1900,7 +1903,7 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, u64 nums; mutex_lock(&fs_info->qgroup_ioctl_lock); - if (!fs_info->quota_enabled) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)) goto out; if (!quota_root) { @@ -2347,7 +2350,7 @@ static void btrfs_qgroup_rescan_worker(struct btrfs_work *work) err = PTR_ERR(trans); break; } - if (!fs_info->quota_enabled) { + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)) { err = -EINTR; } else { err = qgroup_rescan_leaf(fs_info, path, trans); @@ -2578,8 +2581,8 @@ int btrfs_qgroup_reserve_data(struct inode *inode, u64 start, u64 len) struct ulist_iterator uiter; int ret; - if (!root->fs_info->quota_enabled || !is_fstree(root->objectid) || - len == 0) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &root->fs_info->flags) || + !is_fstree(root->objectid) || len == 0) return 0; changeset.bytes_changed = 0; @@ -2676,8 +2679,8 @@ int btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes) { int ret; - if (!root->fs_info->quota_enabled || !is_fstree(root->objectid) || - num_bytes == 0) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &root->fs_info->flags) || + !is_fstree(root->objectid) || num_bytes == 0) return 0; BUG_ON(num_bytes != round_down(num_bytes, root->nodesize)); @@ -2692,7 +2695,8 @@ void btrfs_qgroup_free_meta_all(struct btrfs_root *root) { int reserved; - if (!root->fs_info->quota_enabled || !is_fstree(root->objectid)) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &root->fs_info->flags) || + !is_fstree(root->objectid)) return; reserved = atomic_xchg(&root->qgroup_meta_rsv, 0); @@ -2703,7 +2707,8 @@ void btrfs_qgroup_free_meta_all(struct btrfs_root *root) void btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes) { - if (!root->fs_info->quota_enabled || !is_fstree(root->objectid)) + if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &root->fs_info->flags) || + !is_fstree(root->objectid)) return; BUG_ON(num_bytes != round_down(num_bytes, root->nodesize)); -- cgit v1.2.3