#include <linux/ratelimit.h>
#include <linux/percpu_counter.h>
#include "hash.h"
-#include "ctree.h"
+#include "tree-log.h"
#include "disk-io.h"
#include "print-tree.h"
-#include "transaction.h"
#include "volumes.h"
#include "raid56.h"
#include "locking.h"
#include "free-space-cache.h"
#include "math.h"
#include "sysfs.h"
+#include "qgroup.h"
#undef SCRAMBLE_DELAYED_REFS
u64 bytenr, u64 num_bytes, u64 parent,
u64 root_objectid, u64 owner_objectid,
u64 owner_offset, int refs_to_drop,
- struct btrfs_delayed_extent_op *extra_op);
+ struct btrfs_delayed_extent_op *extra_op,
+ int no_quota);
static void __run_delayed_extent_op(struct btrfs_delayed_extent_op *extent_op,
struct extent_buffer *leaf,
struct btrfs_extent_item *ei);
struct btrfs_root *root,
u64 parent, u64 root_objectid,
u64 flags, struct btrfs_disk_key *key,
- int level, struct btrfs_key *ins);
+ int level, struct btrfs_key *ins,
+ int no_quota);
static int do_chunk_alloc(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root, u64 flags,
int force);
static void dump_space_info(struct btrfs_space_info *info, u64 bytes,
int dump_block_groups);
static int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache,
- u64 num_bytes, int reserve);
+ u64 num_bytes, int reserve,
+ int delalloc);
static int block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv,
u64 num_bytes);
int btrfs_pin_extent(struct btrfs_root *root,
static noinline int remove_extent_data_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
- int refs_to_drop)
+ int refs_to_drop, int *last_ref)
{
struct btrfs_key key;
struct btrfs_extent_data_ref *ref1 = NULL;
if (num_refs == 0) {
ret = btrfs_del_item(trans, root, path);
+ *last_ref = 1;
} else {
if (key.type == BTRFS_EXTENT_DATA_REF_KEY)
btrfs_set_extent_data_ref_count(leaf, ref1, num_refs);
struct btrfs_path *path,
struct btrfs_extent_inline_ref *iref,
int refs_to_mod,
- struct btrfs_delayed_extent_op *extent_op)
+ struct btrfs_delayed_extent_op *extent_op,
+ int *last_ref)
{
struct extent_buffer *leaf;
struct btrfs_extent_item *ei;
else
btrfs_set_shared_data_ref_count(leaf, sref, refs);
} else {
+ *last_ref = 1;
size = btrfs_extent_inline_ref_size(type);
item_size = btrfs_item_size_nr(leaf, path->slots[0]);
ptr = (unsigned long)iref;
if (ret == 0) {
BUG_ON(owner < BTRFS_FIRST_FREE_OBJECTID);
update_inline_extent_backref(root, path, iref,
- refs_to_add, extent_op);
+ refs_to_add, extent_op, NULL);
} else if (ret == -ENOENT) {
setup_inline_extent_backref(root, path, iref, parent,
root_objectid, owner, offset,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_extent_inline_ref *iref,
- int refs_to_drop, int is_data)
+ int refs_to_drop, int is_data, int *last_ref)
{
int ret = 0;
BUG_ON(!is_data && refs_to_drop != 1);
if (iref) {
update_inline_extent_backref(root, path, iref,
- -refs_to_drop, NULL);
+ -refs_to_drop, NULL, last_ref);
} else if (is_data) {
- ret = remove_extent_data_ref(trans, root, path, refs_to_drop);
+ ret = remove_extent_data_ref(trans, root, path, refs_to_drop,
+ last_ref);
} else {
+ *last_ref = 1;
ret = btrfs_del_item(trans, root, path);
}
return ret;
int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 bytenr, u64 num_bytes, u64 parent,
- u64 root_objectid, u64 owner, u64 offset, int for_cow)
+ u64 root_objectid, u64 owner, u64 offset,
+ int no_quota)
{
int ret;
struct btrfs_fs_info *fs_info = root->fs_info;
ret = btrfs_add_delayed_tree_ref(fs_info, trans, bytenr,
num_bytes,
parent, root_objectid, (int)owner,
- BTRFS_ADD_DELAYED_REF, NULL, for_cow);
+ BTRFS_ADD_DELAYED_REF, NULL, no_quota);
} else {
ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr,
num_bytes,
parent, root_objectid, owner, offset,
- BTRFS_ADD_DELAYED_REF, NULL, for_cow);
+ BTRFS_ADD_DELAYED_REF, NULL, no_quota);
}
return ret;
}
u64 bytenr, u64 num_bytes,
u64 parent, u64 root_objectid,
u64 owner, u64 offset, int refs_to_add,
+ int no_quota,
struct btrfs_delayed_extent_op *extent_op)
{
+ struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_path *path;
struct extent_buffer *leaf;
struct btrfs_extent_item *item;
+ struct btrfs_key key;
u64 refs;
int ret;
+ enum btrfs_qgroup_operation_type type = BTRFS_QGROUP_OPER_ADD_EXCL;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
+ if (!is_fstree(root_objectid) || !root->fs_info->quota_enabled)
+ no_quota = 1;
+
path->reada = 1;
path->leave_spinning = 1;
/* this will setup the path even if it fails to insert the back ref */
- ret = insert_inline_extent_backref(trans, root->fs_info->extent_root,
- path, bytenr, num_bytes, parent,
+ ret = insert_inline_extent_backref(trans, fs_info->extent_root, path,
+ bytenr, num_bytes, parent,
root_objectid, owner, offset,
refs_to_add, extent_op);
- if (ret != -EAGAIN)
+ if ((ret < 0 && ret != -EAGAIN) || (!ret && no_quota))
goto out;
+ /*
+ * Ok we were able to insert an inline extent and it appears to be a new
+ * reference, deal with the qgroup accounting.
+ */
+ if (!ret && !no_quota) {
+ ASSERT(root->fs_info->quota_enabled);
+ leaf = path->nodes[0];
+ btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
+ item = btrfs_item_ptr(leaf, path->slots[0],
+ struct btrfs_extent_item);
+ if (btrfs_extent_refs(leaf, item) > (u64)refs_to_add)
+ type = BTRFS_QGROUP_OPER_ADD_SHARED;
+ btrfs_release_path(path);
+
+ ret = btrfs_qgroup_record_ref(trans, fs_info, root_objectid,
+ bytenr, num_bytes, type, 0);
+ goto out;
+ }
+ /*
+ * Ok we had -EAGAIN which means we didn't have space to insert and
+ * inline extent ref, so just update the reference count and add a
+ * normal backref.
+ */
leaf = path->nodes[0];
+ btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
refs = btrfs_extent_refs(leaf, item);
+ if (refs)
+ type = BTRFS_QGROUP_OPER_ADD_SHARED;
btrfs_set_extent_refs(leaf, item, refs + refs_to_add);
if (extent_op)
__run_delayed_extent_op(extent_op, leaf, item);
btrfs_mark_buffer_dirty(leaf);
btrfs_release_path(path);
+ if (!no_quota) {
+ ret = btrfs_qgroup_record_ref(trans, fs_info, root_objectid,
+ bytenr, num_bytes, type, 0);
+ if (ret)
+ goto out;
+ }
+
path->reada = 1;
path->leave_spinning = 1;
-
/* now insert the actual backref */
ret = insert_extent_backref(trans, root->fs_info->extent_root,
path, bytenr, parent, root_objectid,
if (node->type == BTRFS_SHARED_DATA_REF_KEY)
parent = ref->parent;
- else
- ref_root = ref->root;
+ ref_root = ref->root;
if (node->action == BTRFS_ADD_DELAYED_REF && insert_reserved) {
if (extent_op)
node->num_bytes, parent,
ref_root, ref->objectid,
ref->offset, node->ref_mod,
- extent_op);
+ node->no_quota, extent_op);
} else if (node->action == BTRFS_DROP_DELAYED_REF) {
ret = __btrfs_free_extent(trans, root, node->bytenr,
node->num_bytes, parent,
ref_root, ref->objectid,
ref->offset, node->ref_mod,
- extent_op);
+ extent_op, node->no_quota);
} else {
BUG();
}
if (node->type == BTRFS_SHARED_BLOCK_REF_KEY)
parent = ref->parent;
- else
- ref_root = ref->root;
+ ref_root = ref->root;
ins.objectid = node->bytenr;
if (skinny_metadata) {
parent, ref_root,
extent_op->flags_to_set,
&extent_op->key,
- ref->level, &ins);
+ ref->level, &ins,
+ node->no_quota);
} else if (node->action == BTRFS_ADD_DELAYED_REF) {
ret = __btrfs_inc_extent_ref(trans, root, node->bytenr,
node->num_bytes, parent, ref_root,
- ref->level, 0, 1, extent_op);
+ ref->level, 0, 1, node->no_quota,
+ extent_op);
} else if (node->action == BTRFS_DROP_DELAYED_REF) {
ret = __btrfs_free_extent(trans, root, node->bytenr,
node->num_bytes, parent, ref_root,
- ref->level, 0, 1, extent_op);
+ ref->level, 0, 1, extent_op,
+ node->no_quota);
} else {
BUG();
}
}
#endif
-int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
- struct btrfs_fs_info *fs_info)
-{
- struct qgroup_update *qgroup_update;
- int ret = 0;
-
- if (list_empty(&trans->qgroup_ref_list) !=
- !trans->delayed_ref_elem.seq) {
- /* list without seq or seq without list */
- btrfs_err(fs_info,
- "qgroup accounting update error, list is%s empty, seq is %#x.%x",
- list_empty(&trans->qgroup_ref_list) ? "" : " not",
- (u32)(trans->delayed_ref_elem.seq >> 32),
- (u32)trans->delayed_ref_elem.seq);
- BUG();
- }
-
- if (!trans->delayed_ref_elem.seq)
- return 0;
-
- while (!list_empty(&trans->qgroup_ref_list)) {
- qgroup_update = list_first_entry(&trans->qgroup_ref_list,
- struct qgroup_update, list);
- list_del(&qgroup_update->list);
- if (!ret)
- ret = btrfs_qgroup_account_ref(
- trans, fs_info, qgroup_update->node,
- qgroup_update->extent_op);
- kfree(qgroup_update);
- }
-
- btrfs_put_tree_mod_seq(fs_info, &trans->delayed_ref_elem);
-
- return ret;
-}
-
static inline u64 heads_to_leaves(struct btrfs_root *root, u64 heads)
{
u64 num_bytes;
u64 num_entries =
atomic_read(&trans->transaction->delayed_refs.num_entries);
u64 avg_runtime;
+ u64 val;
smp_mb();
avg_runtime = fs_info->avg_delayed_ref_runtime;
+ val = num_entries * avg_runtime;
if (num_entries * avg_runtime >= NSEC_PER_SEC)
return 1;
+ if (val >= NSEC_PER_SEC / 2)
+ return 2;
return btrfs_check_space_for_delayed_refs(trans, root);
}
+struct async_delayed_refs {
+ struct btrfs_root *root;
+ int count;
+ int error;
+ int sync;
+ struct completion wait;
+ struct btrfs_work work;
+};
+
+static void delayed_ref_async_start(struct btrfs_work *work)
+{
+ struct async_delayed_refs *async;
+ struct btrfs_trans_handle *trans;
+ int ret;
+
+ async = container_of(work, struct async_delayed_refs, work);
+
+ trans = btrfs_join_transaction(async->root);
+ if (IS_ERR(trans)) {
+ async->error = PTR_ERR(trans);
+ goto done;
+ }
+
+ /*
+ * trans->sync means that when we call end_transaciton, we won't
+ * wait on delayed refs
+ */
+ trans->sync = true;
+ ret = btrfs_run_delayed_refs(trans, async->root, async->count);
+ if (ret)
+ async->error = ret;
+
+ ret = btrfs_end_transaction(trans, async->root);
+ if (ret && !async->error)
+ async->error = ret;
+done:
+ if (async->sync)
+ complete(&async->wait);
+ else
+ kfree(async);
+}
+
+int btrfs_async_run_delayed_refs(struct btrfs_root *root,
+ unsigned long count, int wait)
+{
+ struct async_delayed_refs *async;
+ int ret;
+
+ async = kmalloc(sizeof(*async), GFP_NOFS);
+ if (!async)
+ return -ENOMEM;
+
+ async->root = root->fs_info->tree_root;
+ async->count = count;
+ async->error = 0;
+ if (wait)
+ async->sync = 1;
+ else
+ async->sync = 0;
+ init_completion(&async->wait);
+
+ btrfs_init_work(&async->work, delayed_ref_async_start,
+ NULL, NULL);
+
+ btrfs_queue_work(root->fs_info->extent_workers, &async->work);
+
+ if (wait) {
+ wait_for_completion(&async->wait);
+ ret = async->error;
+ kfree(async);
+ return ret;
+ }
+ return 0;
+}
+
/*
* this starts processing the delayed reference count updates and
* extent insertions we have queued up so far. count can be
if (root == root->fs_info->extent_root)
root = root->fs_info->tree_root;
- btrfs_delayed_refs_qgroup_accounting(trans, root->fs_info);
-
delayed_refs = &trans->transaction->delayed_refs;
if (count == 0) {
count = atomic_read(&delayed_refs->num_entries) * 2;
goto again;
}
out:
+ ret = btrfs_delayed_qgroup_accounting(trans, root->fs_info);
+ if (ret)
+ return ret;
assert_qgroups_uptodate(trans);
return 0;
}
static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *buf,
- int full_backref, int inc, int for_cow)
+ int full_backref, int inc, int no_quota)
{
u64 bytenr;
u64 num_bytes;
int (*process_func)(struct btrfs_trans_handle *, struct btrfs_root *,
u64, u64, u64, u64, u64, u64, int);
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+ if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state)))
+ return 0;
+#endif
ref_root = btrfs_header_owner(buf);
nritems = btrfs_header_nritems(buf);
level = btrfs_header_level(buf);
- if (!root->ref_cows && level == 0)
+ if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state) && level == 0)
return 0;
if (inc)
key.offset -= btrfs_file_extent_offset(buf, fi);
ret = process_func(trans, root, bytenr, num_bytes,
parent, ref_root, key.objectid,
- key.offset, for_cow);
+ key.offset, no_quota);
if (ret)
goto fail;
} else {
num_bytes = btrfs_level_size(root, level - 1);
ret = process_func(trans, root, bytenr, num_bytes,
parent, ref_root, level - 1, 0,
- for_cow);
+ no_quota);
if (ret)
goto fail;
}
}
int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct extent_buffer *buf, int full_backref, int for_cow)
+ struct extent_buffer *buf, int full_backref, int no_quota)
{
- return __btrfs_mod_ref(trans, root, buf, full_backref, 1, for_cow);
+ return __btrfs_mod_ref(trans, root, buf, full_backref, 1, no_quota);
}
int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct extent_buffer *buf, int full_backref, int for_cow)
+ struct extent_buffer *buf, int full_backref, int no_quota)
{
- return __btrfs_mod_ref(trans, root, buf, full_backref, 0, for_cow);
+ return __btrfs_mod_ref(trans, root, buf, full_backref, 0, no_quota);
}
static int write_one_cache_group(struct btrfs_trans_handle *trans,
spin_lock(&block_group->lock);
if (block_group->cached != BTRFS_CACHE_FINISHED ||
- !btrfs_test_opt(root, SPACE_CACHE)) {
+ !btrfs_test_opt(root, SPACE_CACHE) ||
+ block_group->delalloc_bytes) {
/*
* don't bother trying to write stuff out _if_
* a) we're not cached,
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;
return ret;
}
+
+static inline u64
+btrfs_calc_reclaim_metadata_size(struct btrfs_root *root,
+ struct btrfs_space_info *space_info)
+{
+ u64 used;
+ u64 expected;
+ u64 to_reclaim;
+
+ to_reclaim = min_t(u64, num_online_cpus() * 1024 * 1024,
+ 16 * 1024 * 1024);
+ spin_lock(&space_info->lock);
+ if (can_overcommit(root, space_info, to_reclaim,
+ BTRFS_RESERVE_FLUSH_ALL)) {
+ to_reclaim = 0;
+ goto out;
+ }
+
+ used = space_info->bytes_used + space_info->bytes_reserved +
+ space_info->bytes_pinned + space_info->bytes_readonly +
+ space_info->bytes_may_use;
+ if (can_overcommit(root, space_info, 1024 * 1024,
+ BTRFS_RESERVE_FLUSH_ALL))
+ expected = div_factor_fine(space_info->total_bytes, 95);
+ else
+ expected = div_factor_fine(space_info->total_bytes, 90);
+
+ if (used > expected)
+ to_reclaim = used - expected;
+ else
+ to_reclaim = 0;
+ to_reclaim = min(to_reclaim, space_info->bytes_may_use +
+ space_info->bytes_reserved);
+out:
+ spin_unlock(&space_info->lock);
+
+ return to_reclaim;
+}
+
+static inline int need_do_async_reclaim(struct btrfs_space_info *space_info,
+ struct btrfs_fs_info *fs_info, u64 used)
+{
+ return (used >= div_factor_fine(space_info->total_bytes, 98) &&
+ !btrfs_fs_closing(fs_info) &&
+ !test_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state));
+}
+
+static int btrfs_need_do_async_reclaim(struct btrfs_space_info *space_info,
+ struct btrfs_fs_info *fs_info)
+{
+ u64 used;
+
+ spin_lock(&space_info->lock);
+ used = space_info->bytes_used + space_info->bytes_reserved +
+ space_info->bytes_pinned + space_info->bytes_readonly +
+ space_info->bytes_may_use;
+ if (need_do_async_reclaim(space_info, fs_info, used)) {
+ spin_unlock(&space_info->lock);
+ return 1;
+ }
+ spin_unlock(&space_info->lock);
+
+ return 0;
+}
+
+static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
+{
+ struct btrfs_fs_info *fs_info;
+ struct btrfs_space_info *space_info;
+ u64 to_reclaim;
+ int flush_state;
+
+ fs_info = container_of(work, struct btrfs_fs_info, async_reclaim_work);
+ space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
+
+ to_reclaim = btrfs_calc_reclaim_metadata_size(fs_info->fs_root,
+ space_info);
+ if (!to_reclaim)
+ return;
+
+ flush_state = FLUSH_DELAYED_ITEMS_NR;
+ do {
+ flush_space(fs_info->fs_root, space_info, to_reclaim,
+ to_reclaim, flush_state);
+ flush_state++;
+ if (!btrfs_need_do_async_reclaim(space_info, fs_info))
+ return;
+ } while (flush_state <= COMMIT_TRANS);
+
+ if (btrfs_need_do_async_reclaim(space_info, fs_info))
+ queue_work(system_unbound_wq, work);
+}
+
+void btrfs_init_async_reclaim_work(struct work_struct *work)
+{
+ INIT_WORK(work, btrfs_async_reclaim_metadata_space);
+}
+
/**
* reserve_metadata_bytes - try to reserve bytes from the block_rsv's space
* @root - the root we're allocating for
if (ret && flush != BTRFS_RESERVE_NO_FLUSH) {
flushing = true;
space_info->flush = 1;
+ } else if (!ret && space_info->flags & BTRFS_BLOCK_GROUP_METADATA) {
+ used += orig_bytes;
+ if (need_do_async_reclaim(space_info, root->fs_info, used) &&
+ !work_busy(&root->fs_info->async_reclaim_work))
+ queue_work(system_unbound_wq,
+ &root->fs_info->async_reclaim_work);
}
-
spin_unlock(&space_info->lock);
if (!ret || flush == BTRFS_RESERVE_NO_FLUSH)
{
struct btrfs_block_rsv *block_rsv = NULL;
- if (root->ref_cows)
+ if (test_bit(BTRFS_ROOT_REF_COWS, &root->state))
block_rsv = trans->block_rsv;
if (root == root->fs_info->csum_root && trans->adding_csums)
* @cache: The cache we are manipulating
* @num_bytes: The number of bytes in question
* @reserve: One of the reservation enums
+ * @delalloc: The blocks are allocated for the delalloc write
*
* This is called by the allocator when it reserves space, or by somebody who is
* freeing space that was never actually used on disk. For example if you
* succeeds.
*/
static int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache,
- u64 num_bytes, int reserve)
+ u64 num_bytes, int reserve, int delalloc)
{
struct btrfs_space_info *space_info = cache->space_info;
int ret = 0;
num_bytes, 0);
space_info->bytes_may_use -= num_bytes;
}
+
+ if (delalloc)
+ cache->delalloc_bytes += num_bytes;
}
} else {
if (cache->ro)
space_info->bytes_readonly += num_bytes;
cache->reserved -= num_bytes;
space_info->bytes_reserved -= num_bytes;
+
+ if (delalloc)
+ cache->delalloc_bytes -= num_bytes;
}
spin_unlock(&cache->lock);
spin_unlock(&space_info->lock);
struct btrfs_caching_control *next;
struct btrfs_caching_control *caching_ctl;
struct btrfs_block_group_cache *cache;
- struct btrfs_space_info *space_info;
down_write(&fs_info->commit_root_sem);
up_write(&fs_info->commit_root_sem);
- list_for_each_entry_rcu(space_info, &fs_info->space_info, list)
- percpu_counter_set(&space_info->total_bytes_pinned, 0);
-
update_global_block_rsv(fs_info);
}
spin_lock(&cache->lock);
cache->pinned -= len;
space_info->bytes_pinned -= len;
+ percpu_counter_add(&space_info->total_bytes_pinned, -len);
if (cache->ro) {
space_info->bytes_readonly += len;
readonly = true;
u64 bytenr, u64 num_bytes, u64 parent,
u64 root_objectid, u64 owner_objectid,
u64 owner_offset, int refs_to_drop,
- struct btrfs_delayed_extent_op *extent_op)
+ struct btrfs_delayed_extent_op *extent_op,
+ int no_quota)
{
struct btrfs_key key;
struct btrfs_path *path;
int num_to_del = 1;
u32 item_size;
u64 refs;
+ int last_ref = 0;
+ enum btrfs_qgroup_operation_type type = BTRFS_QGROUP_OPER_SUB_EXCL;
bool skinny_metadata = btrfs_fs_incompat(root->fs_info,
SKINNY_METADATA);
+ if (!info->quota_enabled || !is_fstree(root_objectid))
+ no_quota = 1;
+
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
BUG_ON(iref);
ret = remove_extent_backref(trans, extent_root, path,
NULL, refs_to_drop,
- is_data);
+ is_data, &last_ref);
if (ret) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
refs = btrfs_extent_refs(leaf, ei);
if (refs < refs_to_drop) {
btrfs_err(info, "trying to drop %d refs but we only have %Lu "
- "for bytenr %Lu\n", refs_to_drop, refs, bytenr);
+ "for bytenr %Lu", refs_to_drop, refs, bytenr);
ret = -EINVAL;
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
refs -= refs_to_drop;
if (refs > 0) {
+ type = BTRFS_QGROUP_OPER_SUB_SHARED;
if (extent_op)
__run_delayed_extent_op(extent_op, leaf, ei);
/*
if (found_extent) {
ret = remove_extent_backref(trans, extent_root, path,
iref, refs_to_drop,
- is_data);
+ is_data, &last_ref);
if (ret) {
btrfs_abort_transaction(trans, extent_root, ret);
goto out;
}
}
+ last_ref = 1;
ret = btrfs_del_items(trans, extent_root, path, path->slots[0],
num_to_del);
if (ret) {
goto out;
}
}
+ btrfs_release_path(path);
+
+ /* Deal with the quota accounting */
+ if (!ret && last_ref && !no_quota) {
+ int mod_seq = 0;
+
+ if (owner_objectid >= BTRFS_FIRST_FREE_OBJECTID &&
+ type == BTRFS_QGROUP_OPER_SUB_SHARED)
+ mod_seq = 1;
+
+ ret = btrfs_qgroup_record_ref(trans, info, root_objectid,
+ bytenr, num_bytes, type,
+ mod_seq);
+ }
out:
btrfs_free_path(path);
return ret;
WARN_ON(test_bit(EXTENT_BUFFER_DIRTY, &buf->bflags));
btrfs_add_free_space(cache, buf->start, buf->len);
- btrfs_update_reserved_bytes(cache, buf->len, RESERVE_FREE);
+ btrfs_update_reserved_bytes(cache, buf->len, RESERVE_FREE, 0);
trace_btrfs_reserved_extent_free(root, buf->start, buf->len);
pin = 0;
}
/* Can return -ENOMEM */
int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root,
u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid,
- u64 owner, u64 offset, int for_cow)
+ u64 owner, u64 offset, int no_quota)
{
int ret;
struct btrfs_fs_info *fs_info = root->fs_info;
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+ if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state)))
+ return 0;
+#endif
add_pinned_bytes(root->fs_info, num_bytes, owner, root_objectid);
/*
ret = btrfs_add_delayed_tree_ref(fs_info, trans, bytenr,
num_bytes,
parent, root_objectid, (int)owner,
- BTRFS_DROP_DELAYED_REF, NULL, for_cow);
+ BTRFS_DROP_DELAYED_REF, NULL, no_quota);
} else {
ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr,
num_bytes,
parent, root_objectid, owner,
offset, BTRFS_DROP_DELAYED_REF,
- NULL, for_cow);
+ NULL, no_quota);
}
return ret;
}
LOOP_NO_EMPTY_SIZE = 3,
};
+static inline void
+btrfs_lock_block_group(struct btrfs_block_group_cache *cache,
+ int delalloc)
+{
+ if (delalloc)
+ down_read(&cache->data_rwsem);
+}
+
+static inline void
+btrfs_grab_block_group(struct btrfs_block_group_cache *cache,
+ int delalloc)
+{
+ btrfs_get_block_group(cache);
+ if (delalloc)
+ down_read(&cache->data_rwsem);
+}
+
+static struct btrfs_block_group_cache *
+btrfs_lock_cluster(struct btrfs_block_group_cache *block_group,
+ struct btrfs_free_cluster *cluster,
+ int delalloc)
+{
+ struct btrfs_block_group_cache *used_bg;
+ bool locked = false;
+again:
+ spin_lock(&cluster->refill_lock);
+ if (locked) {
+ if (used_bg == cluster->block_group)
+ return used_bg;
+
+ up_read(&used_bg->data_rwsem);
+ btrfs_put_block_group(used_bg);
+ }
+
+ used_bg = cluster->block_group;
+ if (!used_bg)
+ return NULL;
+
+ if (used_bg == block_group)
+ return used_bg;
+
+ btrfs_get_block_group(used_bg);
+
+ if (!delalloc)
+ return used_bg;
+
+ if (down_read_trylock(&used_bg->data_rwsem))
+ return used_bg;
+
+ spin_unlock(&cluster->refill_lock);
+ down_read(&used_bg->data_rwsem);
+ locked = true;
+ goto again;
+}
+
+static inline void
+btrfs_release_block_group(struct btrfs_block_group_cache *cache,
+ int delalloc)
+{
+ if (delalloc)
+ up_read(&cache->data_rwsem);
+ btrfs_put_block_group(cache);
+}
+
/*
* walks the btree of allocated extents and find a hole of a given size.
* The key ins is changed to record the hole:
static noinline int find_free_extent(struct btrfs_root *orig_root,
u64 num_bytes, u64 empty_size,
u64 hint_byte, struct btrfs_key *ins,
- u64 flags)
+ u64 flags, int delalloc)
{
int ret = 0;
struct btrfs_root *root = orig_root->fs_info->extent_root;
up_read(&space_info->groups_sem);
} else {
index = get_block_group_index(block_group);
+ btrfs_lock_block_group(block_group, delalloc);
goto have_block_group;
}
} else if (block_group) {
u64 offset;
int cached;
- btrfs_get_block_group(block_group);
+ btrfs_grab_block_group(block_group, delalloc);
search_start = block_group->key.objectid;
/*
* the refill lock keeps out other
* people trying to start a new cluster
*/
- spin_lock(&last_ptr->refill_lock);
- used_block_group = last_ptr->block_group;
- if (used_block_group != block_group &&
- (!used_block_group ||
- used_block_group->ro ||
- !block_group_bits(used_block_group, flags)))
+ used_block_group = btrfs_lock_cluster(block_group,
+ last_ptr,
+ delalloc);
+ if (!used_block_group)
goto refill_cluster;
- if (used_block_group != block_group)
- btrfs_get_block_group(used_block_group);
+ if (used_block_group != block_group &&
+ (used_block_group->ro ||
+ !block_group_bits(used_block_group, flags)))
+ goto release_cluster;
offset = btrfs_alloc_from_cluster(used_block_group,
last_ptr,
used_block_group,
search_start, num_bytes);
if (used_block_group != block_group) {
- btrfs_put_block_group(block_group);
+ btrfs_release_block_group(block_group,
+ delalloc);
block_group = used_block_group;
}
goto checks;
}
WARN_ON(last_ptr->block_group != used_block_group);
- if (used_block_group != block_group)
- btrfs_put_block_group(used_block_group);
-refill_cluster:
+release_cluster:
/* If we are on LOOP_NO_EMPTY_SIZE, we can't
* set up a new clusters, so lets just skip it
* and let the allocator find whatever block
* succeeding in the unclustered
* allocation. */
if (loop >= LOOP_NO_EMPTY_SIZE &&
- last_ptr->block_group != block_group) {
+ used_block_group != block_group) {
spin_unlock(&last_ptr->refill_lock);
+ btrfs_release_block_group(used_block_group,
+ delalloc);
goto unclustered_alloc;
}
*/
btrfs_return_cluster_to_free_space(NULL, last_ptr);
+ if (used_block_group != block_group)
+ btrfs_release_block_group(used_block_group,
+ delalloc);
+refill_cluster:
if (loop >= LOOP_NO_EMPTY_SIZE) {
spin_unlock(&last_ptr->refill_lock);
goto unclustered_alloc;
BUG_ON(offset > search_start);
ret = btrfs_update_reserved_bytes(block_group, num_bytes,
- alloc_type);
+ alloc_type, delalloc);
if (ret == -EAGAIN) {
btrfs_add_free_space(block_group, offset, num_bytes);
goto loop;
trace_btrfs_reserve_extent(orig_root, block_group,
search_start, num_bytes);
- btrfs_put_block_group(block_group);
+ btrfs_release_block_group(block_group, delalloc);
break;
loop:
failed_cluster_refill = false;
failed_alloc = false;
BUG_ON(index != get_block_group_index(block_group));
- btrfs_put_block_group(block_group);
+ btrfs_release_block_group(block_group, delalloc);
}
up_read(&space_info->groups_sem);
loop++;
if (loop == LOOP_ALLOC_CHUNK) {
struct btrfs_trans_handle *trans;
+ int exist = 0;
+
+ trans = current->journal_info;
+ if (trans)
+ exist = 1;
+ else
+ trans = btrfs_join_transaction(root);
- trans = btrfs_join_transaction(root);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
goto out;
root, ret);
else
ret = 0;
- btrfs_end_transaction(trans, root);
+ if (!exist)
+ btrfs_end_transaction(trans, root);
if (ret)
goto out;
}
int btrfs_reserve_extent(struct btrfs_root *root,
u64 num_bytes, u64 min_alloc_size,
u64 empty_size, u64 hint_byte,
- struct btrfs_key *ins, int is_data)
+ struct btrfs_key *ins, int is_data, int delalloc)
{
bool final_tried = false;
u64 flags;
again:
WARN_ON(num_bytes < root->sectorsize);
ret = find_free_extent(root, num_bytes, empty_size, hint_byte, ins,
- flags);
+ flags, delalloc);
if (ret == -ENOSPC) {
if (!final_tried && ins->offset) {
}
static int __btrfs_free_reserved_extent(struct btrfs_root *root,
- u64 start, u64 len, int pin)
+ u64 start, u64 len,
+ int pin, int delalloc)
{
struct btrfs_block_group_cache *cache;
int ret = 0;
pin_down_extent(root, cache, start, len, 1);
else {
btrfs_add_free_space(cache, start, len);
- btrfs_update_reserved_bytes(cache, len, RESERVE_FREE);
+ btrfs_update_reserved_bytes(cache, len, RESERVE_FREE, delalloc);
}
btrfs_put_block_group(cache);
}
int btrfs_free_reserved_extent(struct btrfs_root *root,
- u64 start, u64 len)
+ u64 start, u64 len, int delalloc)
{
- return __btrfs_free_reserved_extent(root, start, len, 0);
+ return __btrfs_free_reserved_extent(root, start, len, 0, delalloc);
}
int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root,
u64 start, u64 len)
{
- return __btrfs_free_reserved_extent(root, start, len, 1);
+ return __btrfs_free_reserved_extent(root, start, len, 1, 0);
}
static int alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
btrfs_mark_buffer_dirty(path->nodes[0]);
btrfs_free_path(path);
+ /* Always set parent to 0 here since its exclusive anyway. */
+ ret = btrfs_qgroup_record_ref(trans, fs_info, root_objectid,
+ ins->objectid, ins->offset,
+ BTRFS_QGROUP_OPER_ADD_EXCL, 0);
+ if (ret)
+ return ret;
+
ret = update_block_group(root, ins->objectid, ins->offset, 1);
if (ret) { /* -ENOENT, logic error */
btrfs_err(fs_info, "update block group failed for %llu %llu",
struct btrfs_root *root,
u64 parent, u64 root_objectid,
u64 flags, struct btrfs_disk_key *key,
- int level, struct btrfs_key *ins)
+ int level, struct btrfs_key *ins,
+ int no_quota)
{
int ret;
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_path *path;
struct extent_buffer *leaf;
u32 size = sizeof(*extent_item) + sizeof(*iref);
+ u64 num_bytes = ins->offset;
bool skinny_metadata = btrfs_fs_incompat(root->fs_info,
SKINNY_METADATA);
if (skinny_metadata) {
iref = (struct btrfs_extent_inline_ref *)(extent_item + 1);
+ num_bytes = root->leafsize;
} else {
block_info = (struct btrfs_tree_block_info *)(extent_item + 1);
btrfs_set_tree_block_key(leaf, block_info, key);
btrfs_mark_buffer_dirty(leaf);
btrfs_free_path(path);
+ if (!no_quota) {
+ ret = btrfs_qgroup_record_ref(trans, fs_info, root_objectid,
+ ins->objectid, num_bytes,
+ BTRFS_QGROUP_OPER_ADD_EXCL, 0);
+ if (ret)
+ return ret;
+ }
+
ret = update_block_group(root, ins->objectid, root->leafsize, 1);
if (ret) { /* -ENOENT, logic error */
btrfs_err(fs_info, "update block group failed for %llu %llu",
return -EINVAL;
ret = btrfs_update_reserved_bytes(block_group, ins->offset,
- RESERVE_ALLOC_NO_ACCOUNT);
+ RESERVE_ALLOC_NO_ACCOUNT, 0);
BUG_ON(ret); /* logic error */
ret = alloc_reserved_file_extent(trans, root, 0, root_objectid,
0, owner, offset, ins, 1);
bool skinny_metadata = btrfs_fs_incompat(root->fs_info,
SKINNY_METADATA);
+#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+ if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state))) {
+ buf = btrfs_init_new_buffer(trans, root, root->alloc_bytenr,
+ blocksize, level);
+ if (!IS_ERR(buf))
+ root->alloc_bytenr += blocksize;
+ return buf;
+ }
+#endif
block_rsv = use_block_rsv(trans, root, blocksize);
if (IS_ERR(block_rsv))
return ERR_CAST(block_rsv);
ret = btrfs_reserve_extent(root, blocksize, blocksize,
- empty_size, hint, &ins, 0);
+ empty_size, hint, &ins, 0, 0);
if (ret) {
unuse_block_rsv(root->fs_info, block_rsv, blocksize);
return ERR_PTR(ret);
}
}
- if (root->in_radix) {
+ if (test_bit(BTRFS_ROOT_IN_RADIX, &root->state)) {
btrfs_drop_and_free_fs_root(tree_root->fs_info, root);
} else {
free_extent_buffer(root->node);
list_del(&space_info->list);
for (i = 0; i < BTRFS_NR_RAID_TYPES; i++) {
struct kobject *kobj;
- kobj = &space_info->block_group_kobjs[i];
- if (kobj->parent) {
+ kobj = space_info->block_group_kobjs[i];
+ space_info->block_group_kobjs[i] = NULL;
+ if (kobj) {
kobject_del(kobj);
kobject_put(kobj);
}
up_write(&space_info->groups_sem);
if (first) {
- struct kobject *kobj = &space_info->block_group_kobjs[index];
+ struct raid_kobject *rkobj;
int ret;
- kobject_get(&space_info->kobj); /* put in release */
- ret = kobject_add(kobj, &space_info->kobj, "%s",
- get_raid_name(index));
+ rkobj = kzalloc(sizeof(*rkobj), GFP_NOFS);
+ if (!rkobj)
+ goto out_err;
+ rkobj->raid_type = index;
+ kobject_init(&rkobj->kobj, &btrfs_raid_ktype);
+ ret = kobject_add(&rkobj->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);
+ kobject_put(&rkobj->kobj);
+ goto out_err;
}
+ space_info->block_group_kobjs[index] = &rkobj->kobj;
}
+
+ return;
+out_err:
+ pr_warn("BTRFS: failed to add kobject for block cache. ignoring.\n");
}
static struct btrfs_block_group_cache *
start);
atomic_set(&cache->count, 1);
spin_lock_init(&cache->lock);
+ init_rwsem(&cache->data_rwsem);
INIT_LIST_HEAD(&cache->list);
INIT_LIST_HEAD(&cache->cluster_list);
INIT_LIST_HEAD(&cache->new_bg_list);
extent_root = root->fs_info->extent_root;
- root->fs_info->last_trans_log_full_commit = trans->transid;
+ btrfs_set_log_full_commit(root->fs_info, trans);
cache = btrfs_create_block_group_cache(root, chunk_offset, size);
if (!cache)
struct btrfs_root *tree_root = root->fs_info->tree_root;
struct btrfs_key key;
struct inode *inode;
+ struct kobject *kobj = NULL;
int ret;
int index;
int factor;
*/
list_del_init(&block_group->list);
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]);
+ kobj = block_group->space_info->block_group_kobjs[index];
+ block_group->space_info->block_group_kobjs[index] = NULL;
clear_avail_alloc_bits(root->fs_info, block_group->flags);
}
up_write(&block_group->space_info->groups_sem);
+ if (kobj) {
+ kobject_del(kobj);
+ kobject_put(kobj);
+ }
if (block_group->cached == BTRFS_CACHE_STARTED)
wait_block_group_cache_done(block_group);
projects / cascardo / linux.git / blobdiff