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Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c206
1 files changed, 130 insertions, 76 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index aff579d..343eb10 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -35,6 +35,7 @@
#include "free-space-cache.h"
#include "math.h"
#include "sysfs.h"
+#include "qgroup.h"
#undef SCRAMBLE_DELAYED_REFS
@@ -80,7 +81,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
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);
@@ -93,7 +95,8 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
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);
@@ -1270,7 +1273,7 @@ fail:
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;
@@ -1306,6 +1309,7 @@ static noinline int remove_extent_data_ref(struct btrfs_trans_handle *trans,
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);
@@ -1763,7 +1767,8 @@ void update_inline_extent_backref(struct btrfs_root *root,
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;
@@ -1807,6 +1812,7 @@ void update_inline_extent_backref(struct btrfs_root *root,
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;
@@ -1838,7 +1844,7 @@ int insert_inline_extent_backref(struct btrfs_trans_handle *trans,
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,
@@ -1871,17 +1877,19 @@ static int remove_extent_backref(struct btrfs_trans_handle *trans,
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;
@@ -1945,7 +1953,8 @@ static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr,
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;
@@ -1957,12 +1966,12 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
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;
}
@@ -1972,31 +1981,64 @@ static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
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);
@@ -2004,9 +2046,15 @@ static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
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,
@@ -2040,8 +2088,7 @@ static int run_delayed_data_ref(struct btrfs_trans_handle *trans,
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)
@@ -2055,13 +2102,13 @@ static int run_delayed_data_ref(struct btrfs_trans_handle *trans,
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();
}
@@ -2198,8 +2245,7 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans,
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) {
@@ -2217,15 +2263,18 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans,
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();
}
@@ -2573,42 +2622,6 @@ static u64 find_middle(struct rb_root *root)
}
#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;
@@ -2697,8 +2710,6 @@ int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
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;
@@ -2757,6 +2768,9 @@ again:
goto again;
}
out:
+ ret = btrfs_delayed_qgroup_accounting(trans, root->fs_info);
+ if (ret)
+ return ret;
assert_qgroups_uptodate(trans);
return 0;
}
@@ -2963,7 +2977,7 @@ out:
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;
@@ -3013,7 +3027,7 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
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 {
@@ -3021,7 +3035,7 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
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;
}
@@ -3032,15 +3046,15 @@ 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,
@@ -5723,7 +5737,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
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;
@@ -5739,9 +5754,14 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
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;
@@ -5789,7 +5809,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
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;
@@ -5916,6 +5936,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
refs -= refs_to_drop;
if (refs > 0) {
+ type = BTRFS_QGROUP_OPER_SUB_SHARED;
if (extent_op)
__run_delayed_extent_op(extent_op, leaf, ei);
/*
@@ -5931,7 +5952,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
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;
@@ -5952,6 +5973,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
}
}
+ last_ref = 1;
ret = btrfs_del_items(trans, extent_root, path, path->slots[0],
num_to_del);
if (ret) {
@@ -5974,6 +5996,20 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
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;
@@ -6110,7 +6146,7 @@ out:
/* 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;
@@ -6130,13 +6166,13 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root,
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;
}
@@ -6842,6 +6878,13 @@ 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",
@@ -6856,7 +6899,8 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
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;
@@ -6866,6 +6910,7 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
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);
@@ -6899,6 +6944,7 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
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);
@@ -6920,6 +6966,14 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
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",
generated by cgit v0.10.2 at 2024-08-31 14:12:47 (GMT)