#include "locking.h"
#include "free-space-cache.h"
#include "math.h"
+#include "sysfs.h"
#undef SCRAMBLE_DELAYED_REFS
ref->in_tree = 0;
rb_erase(&ref->rb_node, &delayed_refs->root);
+ if (btrfs_delayed_ref_is_head(ref)) {
+ rb_erase(&locked_ref->href_node,
+ &delayed_refs->href_root);
+ }
delayed_refs->num_entries--;
if (!btrfs_delayed_ref_is_head(ref)) {
/*
{
struct rb_node *node;
struct btrfs_delayed_ref_root *delayed_refs;
- struct btrfs_delayed_ref_node *ref;
+ struct btrfs_delayed_ref_head *head;
struct list_head cluster;
int ret;
u64 delayed_start;
spin_lock(&delayed_refs->lock);
}
- node = rb_first(&delayed_refs->root);
+ node = rb_first(&delayed_refs->href_root);
if (!node)
goto out;
count = (unsigned long)-1;
while (node) {
- ref = rb_entry(node, struct btrfs_delayed_ref_node,
- rb_node);
- if (btrfs_delayed_ref_is_head(ref)) {
- struct btrfs_delayed_ref_head *head;
+ head = rb_entry(node, struct btrfs_delayed_ref_head,
+ href_node);
+ if (btrfs_delayed_ref_is_head(&head->node)) {
+ struct btrfs_delayed_ref_node *ref;
- head = btrfs_delayed_node_to_head(ref);
+ ref = &head->node;
atomic_inc(&ref->refs);
spin_unlock(&delayed_refs->lock);
btrfs_put_delayed_ref(ref);
cond_resched();
goto again;
+ } else {
+ WARN_ON(1);
}
node = rb_next(node);
}
return readonly;
}
+static const char *alloc_name(u64 flags)
+{
+ switch (flags) {
+ case BTRFS_BLOCK_GROUP_METADATA|BTRFS_BLOCK_GROUP_DATA:
+ return "mixed";
+ case BTRFS_BLOCK_GROUP_METADATA:
+ return "metadata";
+ case BTRFS_BLOCK_GROUP_DATA:
+ return "data";
+ case BTRFS_BLOCK_GROUP_SYSTEM:
+ return "system";
+ default:
+ WARN_ON(1);
+ return "invalid-combination";
+ };
+}
+
static int update_space_info(struct btrfs_fs_info *info, u64 flags,
u64 total_bytes, u64 bytes_used,
struct btrfs_space_info **space_info)
return ret;
}
- for (i = 0; i < BTRFS_NR_RAID_TYPES; i++)
+ for (i = 0; i < BTRFS_NR_RAID_TYPES; i++) {
INIT_LIST_HEAD(&found->block_groups[i]);
+ kobject_init(&found->block_group_kobjs[i], &btrfs_raid_ktype);
+ }
init_rwsem(&found->groups_sem);
spin_lock_init(&found->lock);
found->flags = flags & BTRFS_BLOCK_GROUP_TYPE_MASK;
found->chunk_alloc = 0;
found->flush = 0;
init_waitqueue_head(&found->wait);
+
+ ret = kobject_init_and_add(&found->kobj, &space_info_ktype,
+ info->space_info_kobj, "%s",
+ alloc_name(found->flags));
+ if (ret) {
+ kfree(found);
+ return ret;
+ }
+
*space_info = found;
list_add_rcu(&found->list, &info->space_info);
if (flags & BTRFS_BLOCK_GROUP_DATA)
info->data_sinfo = found;
- return 0;
+
+ return ret;
}
static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags)
*/
head->node.in_tree = 0;
rb_erase(&head->node.rb_node, &delayed_refs->root);
+ rb_erase(&head->href_node, &delayed_refs->href_root);
delayed_refs->num_entries--;
return BTRFS_RAID_SINGLE; /* BTRFS_BLOCK_GROUP_SINGLE */
}
-static int get_block_group_index(struct btrfs_block_group_cache *cache)
+int get_block_group_index(struct btrfs_block_group_cache *cache)
{
return __get_raid_index(cache->flags);
}
+static const char *btrfs_raid_type_names[BTRFS_NR_RAID_TYPES] = {
+ [BTRFS_RAID_RAID10] = "raid10",
+ [BTRFS_RAID_RAID1] = "raid1",
+ [BTRFS_RAID_DUP] = "dup",
+ [BTRFS_RAID_RAID0] = "raid0",
+ [BTRFS_RAID_SINGLE] = "single",
+ [BTRFS_RAID_RAID5] = "raid5",
+ [BTRFS_RAID_RAID6] = "raid6",
+};
+
+static const char *get_raid_name(enum btrfs_raid_types type)
+{
+ if (type >= BTRFS_NR_RAID_TYPES)
+ return NULL;
+
+ return btrfs_raid_type_names[type];
+}
+
enum btrfs_loop_type {
LOOP_CACHING_NOWAIT = 0,
LOOP_CACHING_WAIT = 1,
int index = __get_raid_index(flags);
int alloc_type = (flags & BTRFS_BLOCK_GROUP_DATA) ?
RESERVE_ALLOC_NO_ACCOUNT : RESERVE_ALLOC;
- bool found_uncached_bg = false;
bool failed_cluster_refill = false;
bool failed_alloc = false;
bool use_cluster = true;
have_block_group:
cached = block_group_cache_done(block_group);
if (unlikely(!cached)) {
- found_uncached_bg = true;
ret = cache_block_group(block_group, 0);
BUG_ON(ret < 0);
ret = 0;
int index = 0;
spin_lock(&info->lock);
- printk(KERN_INFO "space_info %llu has %llu free, is %sfull\n",
+ printk(KERN_INFO "BTRFS: space_info %llu has %llu free, is %sfull\n",
info->flags,
info->total_bytes - info->bytes_used - info->bytes_pinned -
info->bytes_reserved - info->bytes_readonly,
(info->full) ? "" : "not ");
- printk(KERN_INFO "space_info total=%llu, used=%llu, pinned=%llu, "
+ printk(KERN_INFO "BTRFS: space_info total=%llu, used=%llu, pinned=%llu, "
"reserved=%llu, may_use=%llu, readonly=%llu\n",
info->total_bytes, info->bytes_used, info->bytes_pinned,
info->bytes_reserved, info->bytes_may_use,
again:
list_for_each_entry(cache, &info->block_groups[index], list) {
spin_lock(&cache->lock);
- printk(KERN_INFO "block group %llu has %llu bytes, %llu used %llu pinned %llu reserved %s\n",
+ printk(KERN_INFO "BTRFS: "
+ "block group %llu has %llu bytes, "
+ "%llu used %llu pinned %llu reserved %s\n",
cache->key.objectid, cache->key.offset,
btrfs_block_group_used(&cache->item), cache->pinned,
cache->reserved, cache->ro ? "[readonly]" : "");
/*DEFAULT_RATELIMIT_BURST*/ 1);
if (__ratelimit(&_rs))
WARN(1, KERN_DEBUG
- "btrfs: block rsv returned %d\n", ret);
+ "BTRFS: block rsv returned %d\n", ret);
}
try_reserve:
ret = reserve_metadata_bytes(root, block_rsv, blocksize,
btrfs_end_transaction_throttle(trans, tree_root);
if (!for_reloc && btrfs_need_cleaner_sleep(root)) {
- pr_debug("btrfs: drop snapshot early exit\n");
+ pr_debug("BTRFS: drop snapshot early exit\n");
err = -EAGAIN;
goto out_free;
}
release_global_block_rsv(info);
while (!list_empty(&info->space_info)) {
+ int i;
+
space_info = list_entry(info->space_info.next,
struct btrfs_space_info,
list);
dump_space_info(space_info, 0, 0);
}
}
- percpu_counter_destroy(&space_info->total_bytes_pinned);
list_del(&space_info->list);
- kfree(space_info);
+ for (i = 0; i < BTRFS_NR_RAID_TYPES; i++) {
+ struct kobject *kobj;
+ kobj = &space_info->block_group_kobjs[i];
+ if (kobj->parent) {
+ kobject_del(kobj);
+ kobject_put(kobj);
+ }
+ }
+ kobject_del(&space_info->kobj);
+ kobject_put(&space_info->kobj);
}
return 0;
}
int index = get_block_group_index(cache);
down_write(&space_info->groups_sem);
+ if (list_empty(&space_info->block_groups[index])) {
+ struct kobject *kobj = &space_info->block_group_kobjs[index];
+ int ret;
+
+ kobject_get(&space_info->kobj); /* put in release */
+ ret = kobject_add(kobj, &space_info->kobj, "%s",
+ get_raid_name(index));
+ if (ret) {
+ pr_warn("BTRFS: failed to add kobject for block cache. ignoring.\n");
+ kobject_put(&space_info->kobj);
+ }
+ }
list_add_tail(&cache->list, &space_info->block_groups[index]);
up_write(&space_info->groups_sem);
}
* are still on the list after taking the semaphore
*/
list_del_init(&block_group->list);
- if (list_empty(&block_group->space_info->block_groups[index]))
+ if (list_empty(&block_group->space_info->block_groups[index])) {
+ kobject_del(&block_group->space_info->block_group_kobjs[index]);
+ kobject_put(&block_group->space_info->block_group_kobjs[index]);
clear_avail_alloc_bits(root->fs_info, block_group->flags);
+ }
up_write(&block_group->space_info->groups_sem);
if (block_group->cached == BTRFS_CACHE_STARTED)
projects / deliverable / linux.git / blobdiff