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btrfs: convert block group bit field to use bit helpers
We use a bit field in the btrfs_block_group for different flags, however this is awkward because we have to hold the block_group->lock for any modification of any of these fields, and makes the code clunky for a few of these flags. Convert these to a properly flags setup so we can utilize the bit helpers. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
parent
723de71d41
commit
3349b57fd4
@ -772,7 +772,7 @@ int btrfs_cache_block_group(struct btrfs_block_group *cache, bool wait)
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WARN_ON(cache->caching_ctl);
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cache->caching_ctl = caching_ctl;
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cache->cached = BTRFS_CACHE_STARTED;
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cache->has_caching_ctl = 1;
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set_bit(BLOCK_GROUP_FLAG_HAS_CACHING_CTL, &cache->runtime_flags);
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spin_unlock(&cache->lock);
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write_lock(&fs_info->block_group_cache_lock);
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@ -988,11 +988,12 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
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kobject_put(kobj);
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}
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if (block_group->has_caching_ctl)
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if (test_bit(BLOCK_GROUP_FLAG_HAS_CACHING_CTL, &block_group->runtime_flags))
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caching_ctl = btrfs_get_caching_control(block_group);
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if (block_group->cached == BTRFS_CACHE_STARTED)
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btrfs_wait_block_group_cache_done(block_group);
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if (block_group->has_caching_ctl) {
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if (test_bit(BLOCK_GROUP_FLAG_HAS_CACHING_CTL, &block_group->runtime_flags)) {
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write_lock(&fs_info->block_group_cache_lock);
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if (!caching_ctl) {
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struct btrfs_caching_control *ctl;
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@ -1034,12 +1035,13 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
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< block_group->zone_unusable);
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WARN_ON(block_group->space_info->disk_total
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< block_group->length * factor);
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WARN_ON(block_group->zone_is_active &&
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WARN_ON(test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE,
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&block_group->runtime_flags) &&
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block_group->space_info->active_total_bytes
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< block_group->length);
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}
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block_group->space_info->total_bytes -= block_group->length;
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if (block_group->zone_is_active)
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if (test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags))
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block_group->space_info->active_total_bytes -= block_group->length;
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block_group->space_info->bytes_readonly -=
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(block_group->length - block_group->zone_unusable);
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@ -1069,7 +1071,8 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
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goto out;
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spin_lock(&block_group->lock);
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block_group->removed = 1;
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set_bit(BLOCK_GROUP_FLAG_REMOVED, &block_group->runtime_flags);
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/*
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* At this point trimming or scrub can't start on this block group,
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* because we removed the block group from the rbtree
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@ -2409,7 +2412,8 @@ void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans)
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ret = insert_block_group_item(trans, block_group);
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if (ret)
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btrfs_abort_transaction(trans, ret);
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if (!block_group->chunk_item_inserted) {
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if (!test_bit(BLOCK_GROUP_FLAG_CHUNK_ITEM_INSERTED,
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&block_group->runtime_flags)) {
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mutex_lock(&fs_info->chunk_mutex);
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ret = btrfs_chunk_alloc_add_chunk_item(trans, block_group);
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mutex_unlock(&fs_info->chunk_mutex);
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@ -3955,7 +3959,8 @@ void btrfs_put_block_group_cache(struct btrfs_fs_info *info)
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while (block_group) {
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btrfs_wait_block_group_cache_done(block_group);
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spin_lock(&block_group->lock);
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if (block_group->iref)
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if (test_bit(BLOCK_GROUP_FLAG_IREF,
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&block_group->runtime_flags))
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break;
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spin_unlock(&block_group->lock);
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block_group = btrfs_next_block_group(block_group);
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@ -3968,7 +3973,7 @@ void btrfs_put_block_group_cache(struct btrfs_fs_info *info)
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}
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inode = block_group->inode;
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block_group->iref = 0;
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clear_bit(BLOCK_GROUP_FLAG_IREF, &block_group->runtime_flags);
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block_group->inode = NULL;
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spin_unlock(&block_group->lock);
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ASSERT(block_group->io_ctl.inode == NULL);
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@ -4110,7 +4115,7 @@ void btrfs_unfreeze_block_group(struct btrfs_block_group *block_group)
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spin_lock(&block_group->lock);
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cleanup = (atomic_dec_and_test(&block_group->frozen) &&
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block_group->removed);
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test_bit(BLOCK_GROUP_FLAG_REMOVED, &block_group->runtime_flags));
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spin_unlock(&block_group->lock);
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if (cleanup) {
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@ -46,6 +46,18 @@ enum btrfs_chunk_alloc_enum {
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CHUNK_ALLOC_FORCE_FOR_EXTENT,
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};
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/* Block group flags set at runtime */
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enum btrfs_block_group_flags {
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BLOCK_GROUP_FLAG_IREF,
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BLOCK_GROUP_FLAG_HAS_CACHING_CTL,
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BLOCK_GROUP_FLAG_REMOVED,
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BLOCK_GROUP_FLAG_TO_COPY,
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BLOCK_GROUP_FLAG_RELOCATING_REPAIR,
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BLOCK_GROUP_FLAG_CHUNK_ITEM_INSERTED,
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BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE,
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BLOCK_GROUP_FLAG_ZONED_DATA_RELOC,
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};
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struct btrfs_caching_control {
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struct list_head list;
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struct mutex mutex;
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@ -95,16 +107,9 @@ struct btrfs_block_group {
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/* For raid56, this is a full stripe, without parity */
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unsigned long full_stripe_len;
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unsigned long runtime_flags;
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unsigned int ro;
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unsigned int iref:1;
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unsigned int has_caching_ctl:1;
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unsigned int removed:1;
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unsigned int to_copy:1;
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unsigned int relocating_repair:1;
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unsigned int chunk_item_inserted:1;
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unsigned int zone_is_active:1;
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unsigned int zoned_data_reloc_ongoing:1;
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int disk_cache_state;
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@ -546,7 +546,7 @@ static int mark_block_group_to_copy(struct btrfs_fs_info *fs_info,
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continue;
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spin_lock(&cache->lock);
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cache->to_copy = 1;
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set_bit(BLOCK_GROUP_FLAG_TO_COPY, &cache->runtime_flags);
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spin_unlock(&cache->lock);
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btrfs_put_block_group(cache);
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@ -577,7 +577,7 @@ bool btrfs_finish_block_group_to_copy(struct btrfs_device *srcdev,
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return true;
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spin_lock(&cache->lock);
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if (cache->removed) {
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if (test_bit(BLOCK_GROUP_FLAG_REMOVED, &cache->runtime_flags)) {
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spin_unlock(&cache->lock);
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return true;
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}
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@ -611,7 +611,7 @@ bool btrfs_finish_block_group_to_copy(struct btrfs_device *srcdev,
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/* Last stripe on this device */
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spin_lock(&cache->lock);
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cache->to_copy = 0;
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clear_bit(BLOCK_GROUP_FLAG_TO_COPY, &cache->runtime_flags);
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spin_unlock(&cache->lock);
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return true;
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@ -3804,7 +3804,8 @@ static int do_allocation_zoned(struct btrfs_block_group *block_group,
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block_group->start == fs_info->data_reloc_bg ||
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fs_info->data_reloc_bg == 0);
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if (block_group->ro || block_group->zoned_data_reloc_ongoing) {
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if (block_group->ro ||
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test_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags)) {
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ret = 1;
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goto out;
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}
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@ -3881,7 +3882,7 @@ out:
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* regular extents) at the same time to the same zone, which
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* easily break the write pointer.
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*/
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block_group->zoned_data_reloc_ongoing = 1;
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set_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags);
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fs_info->data_reloc_bg = 0;
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}
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spin_unlock(&fs_info->relocation_bg_lock);
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@ -126,10 +126,8 @@ struct inode *lookup_free_space_inode(struct btrfs_block_group *block_group,
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block_group->disk_cache_state = BTRFS_DC_CLEAR;
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}
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if (!block_group->iref) {
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if (!test_and_set_bit(BLOCK_GROUP_FLAG_IREF, &block_group->runtime_flags))
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block_group->inode = igrab(inode);
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block_group->iref = 1;
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}
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spin_unlock(&block_group->lock);
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return inode;
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@ -241,8 +239,7 @@ int btrfs_remove_free_space_inode(struct btrfs_trans_handle *trans,
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clear_nlink(inode);
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/* One for the block groups ref */
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spin_lock(&block_group->lock);
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if (block_group->iref) {
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block_group->iref = 0;
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if (test_and_clear_bit(BLOCK_GROUP_FLAG_IREF, &block_group->runtime_flags)) {
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block_group->inode = NULL;
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spin_unlock(&block_group->lock);
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iput(inode);
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@ -2876,7 +2873,8 @@ void btrfs_dump_free_space(struct btrfs_block_group *block_group,
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if (btrfs_is_zoned(fs_info)) {
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btrfs_info(fs_info, "free space %llu active %d",
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block_group->zone_capacity - block_group->alloc_offset,
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block_group->zone_is_active);
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test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE,
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&block_group->runtime_flags));
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return;
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}
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@ -4008,7 +4006,7 @@ int btrfs_trim_block_group(struct btrfs_block_group *block_group,
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*trimmed = 0;
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spin_lock(&block_group->lock);
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if (block_group->removed) {
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if (test_bit(BLOCK_GROUP_FLAG_REMOVED, &block_group->runtime_flags)) {
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spin_unlock(&block_group->lock);
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return 0;
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}
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@ -4038,7 +4036,7 @@ int btrfs_trim_block_group_extents(struct btrfs_block_group *block_group,
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*trimmed = 0;
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spin_lock(&block_group->lock);
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if (block_group->removed) {
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if (test_bit(BLOCK_GROUP_FLAG_REMOVED, &block_group->runtime_flags)) {
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spin_unlock(&block_group->lock);
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return 0;
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}
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@ -4060,7 +4058,7 @@ int btrfs_trim_block_group_bitmaps(struct btrfs_block_group *block_group,
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*trimmed = 0;
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spin_lock(&block_group->lock);
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if (block_group->removed) {
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if (test_bit(BLOCK_GROUP_FLAG_REMOVED, &block_group->runtime_flags)) {
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spin_unlock(&block_group->lock);
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return 0;
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}
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@ -3257,7 +3257,7 @@ static int scrub_simple_mirror(struct scrub_ctx *sctx,
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}
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/* Block group removed? */
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spin_lock(&bg->lock);
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if (bg->removed) {
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if (test_bit(BLOCK_GROUP_FLAG_REMOVED, &bg->runtime_flags)) {
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spin_unlock(&bg->lock);
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ret = 0;
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break;
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@ -3597,7 +3597,7 @@ static noinline_for_stack int scrub_chunk(struct scrub_ctx *sctx,
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* kthread or relocation.
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*/
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spin_lock(&bg->lock);
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if (!bg->removed)
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if (!test_bit(BLOCK_GROUP_FLAG_REMOVED, &bg->runtime_flags))
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ret = -EINVAL;
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spin_unlock(&bg->lock);
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@ -3756,7 +3756,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx,
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if (sctx->is_dev_replace && btrfs_is_zoned(fs_info)) {
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spin_lock(&cache->lock);
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if (!cache->to_copy) {
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if (!test_bit(BLOCK_GROUP_FLAG_TO_COPY, &cache->runtime_flags)) {
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spin_unlock(&cache->lock);
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btrfs_put_block_group(cache);
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goto skip;
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@ -3773,7 +3773,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx,
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* repair extents.
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*/
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spin_lock(&cache->lock);
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if (cache->removed) {
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if (test_bit(BLOCK_GROUP_FLAG_REMOVED, &cache->runtime_flags)) {
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spin_unlock(&cache->lock);
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btrfs_put_block_group(cache);
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goto skip;
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@ -3933,8 +3933,8 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx,
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* balance is triggered or it becomes used and unused again.
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*/
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spin_lock(&cache->lock);
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if (!cache->removed && !cache->ro && cache->reserved == 0 &&
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cache->used == 0) {
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if (!test_bit(BLOCK_GROUP_FLAG_REMOVED, &cache->runtime_flags) &&
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!cache->ro && cache->reserved == 0 && cache->used == 0) {
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spin_unlock(&cache->lock);
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if (btrfs_test_opt(fs_info, DISCARD_ASYNC))
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btrfs_discard_queue_work(&fs_info->discard_ctl,
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@ -305,7 +305,7 @@ void btrfs_add_bg_to_space_info(struct btrfs_fs_info *info,
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ASSERT(found);
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spin_lock(&found->lock);
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found->total_bytes += block_group->length;
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if (block_group->zone_is_active)
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if (test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags))
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found->active_total_bytes += block_group->length;
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found->disk_total += block_group->length * factor;
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found->bytes_used += block_group->used;
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@ -5595,7 +5595,7 @@ int btrfs_chunk_alloc_add_chunk_item(struct btrfs_trans_handle *trans,
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if (ret)
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goto out;
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bg->chunk_item_inserted = 1;
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set_bit(BLOCK_GROUP_FLAG_CHUNK_ITEM_INSERTED, &bg->runtime_flags);
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if (map->type & BTRFS_BLOCK_GROUP_SYSTEM) {
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ret = btrfs_add_system_chunk(fs_info, &key, chunk, item_size);
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@ -6154,7 +6154,7 @@ static bool is_block_group_to_copy(struct btrfs_fs_info *fs_info, u64 logical)
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cache = btrfs_lookup_block_group(fs_info, logical);
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spin_lock(&cache->lock);
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ret = cache->to_copy;
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ret = test_bit(BLOCK_GROUP_FLAG_TO_COPY, &cache->runtime_flags);
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spin_unlock(&cache->lock);
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btrfs_put_block_group(cache);
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@ -8244,7 +8244,7 @@ static int relocating_repair_kthread(void *data)
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if (!cache)
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goto out;
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if (!cache->relocating_repair)
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if (!test_bit(BLOCK_GROUP_FLAG_RELOCATING_REPAIR, &cache->runtime_flags))
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goto out;
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ret = btrfs_may_alloc_data_chunk(fs_info, target);
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@ -8282,12 +8282,11 @@ bool btrfs_repair_one_zone(struct btrfs_fs_info *fs_info, u64 logical)
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return true;
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spin_lock(&cache->lock);
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if (cache->relocating_repair) {
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if (test_and_set_bit(BLOCK_GROUP_FLAG_RELOCATING_REPAIR, &cache->runtime_flags)) {
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spin_unlock(&cache->lock);
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btrfs_put_block_group(cache);
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return true;
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}
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cache->relocating_repair = 1;
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spin_unlock(&cache->lock);
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kthread_run(relocating_repair_kthread, cache,
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@ -1436,7 +1436,7 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
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goto out;
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} else if (map->num_stripes == num_conventional) {
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cache->alloc_offset = last_alloc;
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cache->zone_is_active = 1;
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set_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &cache->runtime_flags);
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goto out;
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}
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}
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@ -1452,7 +1452,8 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
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}
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cache->alloc_offset = alloc_offsets[0];
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cache->zone_capacity = caps[0];
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cache->zone_is_active = test_bit(0, active);
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if (test_bit(0, active))
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set_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &cache->runtime_flags);
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break;
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case BTRFS_BLOCK_GROUP_DUP:
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if (map->type & BTRFS_BLOCK_GROUP_DATA) {
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@ -1486,7 +1487,9 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
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goto out;
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}
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} else {
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cache->zone_is_active = test_bit(0, active);
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if (test_bit(0, active))
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set_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE,
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&cache->runtime_flags);
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}
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cache->alloc_offset = alloc_offsets[0];
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cache->zone_capacity = min(caps[0], caps[1]);
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@ -1530,7 +1533,7 @@ out:
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if (!ret) {
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cache->meta_write_pointer = cache->alloc_offset + cache->start;
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if (cache->zone_is_active) {
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if (test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &cache->runtime_flags)) {
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btrfs_get_block_group(cache);
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spin_lock(&fs_info->zone_active_bgs_lock);
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list_add_tail(&cache->active_bg_list,
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@ -1871,7 +1874,7 @@ bool btrfs_zone_activate(struct btrfs_block_group *block_group)
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spin_lock(&space_info->lock);
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spin_lock(&block_group->lock);
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if (block_group->zone_is_active) {
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if (test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags)) {
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ret = true;
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goto out_unlock;
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}
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@ -1897,7 +1900,7 @@ bool btrfs_zone_activate(struct btrfs_block_group *block_group)
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}
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|
||||
/* Successfully activated all the zones */
|
||||
block_group->zone_is_active = 1;
|
||||
set_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags);
|
||||
space_info->active_total_bytes += block_group->length;
|
||||
spin_unlock(&block_group->lock);
|
||||
btrfs_try_granting_tickets(fs_info, space_info);
|
||||
@ -1960,7 +1963,7 @@ static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_writ
|
||||
int i;
|
||||
|
||||
spin_lock(&block_group->lock);
|
||||
if (!block_group->zone_is_active) {
|
||||
if (!test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags)) {
|
||||
spin_unlock(&block_group->lock);
|
||||
return 0;
|
||||
}
|
||||
@ -2001,7 +2004,8 @@ static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_writ
|
||||
* Bail out if someone already deactivated the block group, or
|
||||
* allocated space is left in the block group.
|
||||
*/
|
||||
if (!block_group->zone_is_active) {
|
||||
if (!test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE,
|
||||
&block_group->runtime_flags)) {
|
||||
spin_unlock(&block_group->lock);
|
||||
btrfs_dec_block_group_ro(block_group);
|
||||
return 0;
|
||||
@ -2014,7 +2018,7 @@ static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_writ
|
||||
}
|
||||
}
|
||||
|
||||
block_group->zone_is_active = 0;
|
||||
clear_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags);
|
||||
block_group->alloc_offset = block_group->zone_capacity;
|
||||
block_group->free_space_ctl->free_space = 0;
|
||||
btrfs_clear_treelog_bg(block_group);
|
||||
@ -2222,13 +2226,14 @@ void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logica
|
||||
ASSERT(block_group && (block_group->flags & BTRFS_BLOCK_GROUP_DATA));
|
||||
|
||||
spin_lock(&block_group->lock);
|
||||
if (!block_group->zoned_data_reloc_ongoing)
|
||||
if (!test_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags))
|
||||
goto out;
|
||||
|
||||
/* All relocation extents are written. */
|
||||
if (block_group->start + block_group->alloc_offset == logical + length) {
|
||||
/* Now, release this block group for further allocations. */
|
||||
block_group->zoned_data_reloc_ongoing = 0;
|
||||
clear_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC,
|
||||
&block_group->runtime_flags);
|
||||
}
|
||||
|
||||
out:
|
||||
@ -2300,7 +2305,9 @@ int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
|
||||
list) {
|
||||
if (!spin_trylock(&bg->lock))
|
||||
continue;
|
||||
if (btrfs_zoned_bg_is_full(bg) || bg->zone_is_active) {
|
||||
if (btrfs_zoned_bg_is_full(bg) ||
|
||||
test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE,
|
||||
&bg->runtime_flags)) {
|
||||
spin_unlock(&bg->lock);
|
||||
continue;
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user