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Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c223
1 files changed, 107 insertions, 116 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 61b494e8e604..665da8f66ff1 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -60,21 +60,6 @@ enum {
CHUNK_ALLOC_FORCE = 2,
};
-/*
- * Control how reservations are dealt with.
- *
- * RESERVE_FREE - freeing a reservation.
- * RESERVE_ALLOC - allocating space and we need to update bytes_may_use for
- * ENOSPC accounting
- * RESERVE_ALLOC_NO_ACCOUNT - allocating space and we should not update
- * bytes_may_use as the ENOSPC accounting is done elsewhere
- */
-enum {
- RESERVE_FREE = 0,
- RESERVE_ALLOC = 1,
- RESERVE_ALLOC_NO_ACCOUNT = 2,
-};
-
static int update_block_group(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 bytenr,
u64 num_bytes, int alloc);
@@ -104,9 +89,10 @@ static int find_next_key(struct btrfs_path *path, int level,
struct btrfs_key *key);
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,
- int delalloc);
+static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache,
+ u64 ram_bytes, u64 num_bytes, int delalloc);
+static int btrfs_free_reserved_bytes(struct btrfs_block_group_cache *cache,
+ u64 num_bytes, 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,
@@ -3501,7 +3487,6 @@ again:
dcs = BTRFS_DC_SETUP;
else if (ret == -ENOSPC)
set_bit(BTRFS_TRANS_CACHE_ENOSPC, &trans->transaction->flags);
- btrfs_free_reserved_data_space(inode, 0, num_pages);
out_put:
iput(inode);
@@ -4286,13 +4271,10 @@ int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len)
if (ret < 0)
return ret;
- /*
- * Use new btrfs_qgroup_reserve_data to reserve precious data space
- *
- * TODO: Find a good method to avoid reserve data space for NOCOW
- * range, but don't impact performance on quota disable case.
- */
+ /* Use new btrfs_qgroup_reserve_data to reserve precious data space. */
ret = btrfs_qgroup_reserve_data(inode, start, len);
+ if (ret)
+ btrfs_free_reserved_data_space_noquota(inode, start, len);
return ret;
}
@@ -4472,6 +4454,15 @@ void check_system_chunk(struct btrfs_trans_handle *trans,
}
}
+/*
+ * If force is CHUNK_ALLOC_FORCE:
+ * - return 1 if it successfully allocates a chunk,
+ * - return errors including -ENOSPC otherwise.
+ * If force is NOT CHUNK_ALLOC_FORCE:
+ * - return 0 if it doesn't need to allocate a new chunk,
+ * - return 1 if it successfully allocates a chunk,
+ * - return errors including -ENOSPC otherwise.
+ */
static int do_chunk_alloc(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root, u64 flags, int force)
{
@@ -4882,7 +4873,7 @@ static int flush_space(struct btrfs_root *root,
btrfs_get_alloc_profile(root, 0),
CHUNK_ALLOC_NO_FORCE);
btrfs_end_transaction(trans, root);
- if (ret == -ENOSPC)
+ if (ret > 0 || ret == -ENOSPC)
ret = 0;
break;
case COMMIT_TRANS:
@@ -4907,11 +4898,6 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root,
u64 expected;
u64 to_reclaim = 0;
- to_reclaim = min_t(u64, num_online_cpus() * SZ_1M, SZ_16M);
- if (can_overcommit(root, space_info, to_reclaim,
- BTRFS_RESERVE_FLUSH_ALL))
- return 0;
-
list_for_each_entry(ticket, &space_info->tickets, list)
to_reclaim += ticket->bytes;
list_for_each_entry(ticket, &space_info->priority_tickets, list)
@@ -4919,6 +4905,11 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root,
if (to_reclaim)
return to_reclaim;
+ to_reclaim = min_t(u64, num_online_cpus() * SZ_1M, SZ_16M);
+ if (can_overcommit(root, space_info, to_reclaim,
+ BTRFS_RESERVE_FLUSH_ALL))
+ return 0;
+
used = space_info->bytes_used + space_info->bytes_reserved +
space_info->bytes_pinned + space_info->bytes_readonly +
space_info->bytes_may_use;
@@ -4972,12 +4963,12 @@ static void wake_all_tickets(struct list_head *head)
*/
static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
{
- struct reserve_ticket *last_ticket = NULL;
struct btrfs_fs_info *fs_info;
struct btrfs_space_info *space_info;
u64 to_reclaim;
int flush_state;
int commit_cycles = 0;
+ u64 last_tickets_id;
fs_info = container_of(work, struct btrfs_fs_info, async_reclaim_work);
space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
@@ -4990,8 +4981,7 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
spin_unlock(&space_info->lock);
return;
}
- last_ticket = list_first_entry(&space_info->tickets,
- struct reserve_ticket, list);
+ last_tickets_id = space_info->tickets_id;
spin_unlock(&space_info->lock);
flush_state = FLUSH_DELAYED_ITEMS_NR;
@@ -5011,10 +5001,10 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
space_info);
ticket = list_first_entry(&space_info->tickets,
struct reserve_ticket, list);
- if (last_ticket == ticket) {
+ if (last_tickets_id == space_info->tickets_id) {
flush_state++;
} else {
- last_ticket = ticket;
+ last_tickets_id = space_info->tickets_id;
flush_state = FLUSH_DELAYED_ITEMS_NR;
if (commit_cycles)
commit_cycles--;
@@ -5390,6 +5380,7 @@ again:
list_del_init(&ticket->list);
num_bytes -= ticket->bytes;
ticket->bytes = 0;
+ space_info->tickets_id++;
wake_up(&ticket->wait);
} else {
ticket->bytes -= num_bytes;
@@ -5432,6 +5423,7 @@ again:
num_bytes -= ticket->bytes;
space_info->bytes_may_use += ticket->bytes;
ticket->bytes = 0;
+ space_info->tickets_id++;
wake_up(&ticket->wait);
} else {
trace_btrfs_space_reservation(fs_info, "space_info",
@@ -6497,19 +6489,15 @@ void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg)
}
/**
- * btrfs_update_reserved_bytes - update the block_group and space info counters
+ * btrfs_add_reserved_bytes - update the block_group and space info counters
* @cache: The cache we are manipulating
+ * @ram_bytes: The number of bytes of file content, and will be same to
+ * @num_bytes except for the compress path.
* @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
- * reserve some space for a new leaf in transaction A and before transaction A
- * commits you free that leaf, you call this with reserve set to 0 in order to
- * clear the reservation.
- *
- * Metadata reservations should be called with RESERVE_ALLOC so we do the proper
+ * This is called by the allocator when it reserves space. Metadata
+ * reservations should be called with RESERVE_ALLOC so we do the proper
* ENOSPC accounting. For data we handle the reservation through clearing the
* delalloc bits in the io_tree. We have to do this since we could end up
* allocating less disk space for the amount of data we have reserved in the
@@ -6519,44 +6507,63 @@ void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg)
* make the reservation and return -EAGAIN, otherwise this function always
* succeeds.
*/
-static int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache,
- u64 num_bytes, int reserve, int delalloc)
+static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache,
+ u64 ram_bytes, u64 num_bytes, int delalloc)
{
struct btrfs_space_info *space_info = cache->space_info;
int ret = 0;
spin_lock(&space_info->lock);
spin_lock(&cache->lock);
- if (reserve != RESERVE_FREE) {
- if (cache->ro) {
- ret = -EAGAIN;
- } else {
- cache->reserved += num_bytes;
- space_info->bytes_reserved += num_bytes;
- if (reserve == RESERVE_ALLOC) {
- trace_btrfs_space_reservation(cache->fs_info,
- "space_info", space_info->flags,
- num_bytes, 0);
- space_info->bytes_may_use -= num_bytes;
- }
-
- if (delalloc)
- cache->delalloc_bytes += num_bytes;
- }
+ if (cache->ro) {
+ ret = -EAGAIN;
} else {
- if (cache->ro)
- space_info->bytes_readonly += num_bytes;
- cache->reserved -= num_bytes;
- space_info->bytes_reserved -= num_bytes;
+ cache->reserved += num_bytes;
+ space_info->bytes_reserved += num_bytes;
+ trace_btrfs_space_reservation(cache->fs_info,
+ "space_info", space_info->flags,
+ ram_bytes, 0);
+ space_info->bytes_may_use -= ram_bytes;
if (delalloc)
- cache->delalloc_bytes -= num_bytes;
+ cache->delalloc_bytes += num_bytes;
}
spin_unlock(&cache->lock);
spin_unlock(&space_info->lock);
return ret;
}
+/**
+ * btrfs_free_reserved_bytes - update the block_group and space info counters
+ * @cache: The cache we are manipulating
+ * @num_bytes: The number of bytes in question
+ * @delalloc: The blocks are allocated for the delalloc write
+ *
+ * This is called by somebody who is freeing space that was never actually used
+ * on disk. For example if you reserve some space for a new leaf in transaction
+ * A and before transaction A commits you free that leaf, you call this with
+ * reserve set to 0 in order to clear the reservation.
+ */
+
+static int btrfs_free_reserved_bytes(struct btrfs_block_group_cache *cache,
+ u64 num_bytes, int delalloc)
+{
+ struct btrfs_space_info *space_info = cache->space_info;
+ int ret = 0;
+
+ spin_lock(&space_info->lock);
+ spin_lock(&cache->lock);
+ 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);
+ return ret;
+}
void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
@@ -7191,7 +7198,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
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, 0);
+ btrfs_free_reserved_bytes(cache, buf->len, 0);
btrfs_put_block_group(cache);
trace_btrfs_reserved_extent_free(root, buf->start, buf->len);
pin = 0;
@@ -7416,9 +7423,9 @@ btrfs_release_block_group(struct btrfs_block_group_cache *cache,
* the free space extent currently.
*/
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, int delalloc)
+ u64 ram_bytes, u64 num_bytes, u64 empty_size,
+ u64 hint_byte, struct btrfs_key *ins,
+ u64 flags, int delalloc)
{
int ret = 0;
struct btrfs_root *root = orig_root->fs_info->extent_root;
@@ -7430,8 +7437,6 @@ static noinline int find_free_extent(struct btrfs_root *orig_root,
struct btrfs_space_info *space_info;
int loop = 0;
int index = __get_raid_index(flags);
- int alloc_type = (flags & BTRFS_BLOCK_GROUP_DATA) ?
- RESERVE_ALLOC_NO_ACCOUNT : RESERVE_ALLOC;
bool failed_cluster_refill = false;
bool failed_alloc = false;
bool use_cluster = true;
@@ -7763,8 +7768,8 @@ checks:
search_start - offset);
BUG_ON(offset > search_start);
- ret = btrfs_update_reserved_bytes(block_group, num_bytes,
- alloc_type, delalloc);
+ ret = btrfs_add_reserved_bytes(block_group, ram_bytes,
+ num_bytes, delalloc);
if (ret == -EAGAIN) {
btrfs_add_free_space(block_group, offset, num_bytes);
goto loop;
@@ -7936,7 +7941,7 @@ again:
up_read(&info->groups_sem);
}
-int btrfs_reserve_extent(struct btrfs_root *root,
+int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes,
u64 num_bytes, u64 min_alloc_size,
u64 empty_size, u64 hint_byte,
struct btrfs_key *ins, int is_data, int delalloc)
@@ -7948,8 +7953,8 @@ int btrfs_reserve_extent(struct btrfs_root *root,
flags = btrfs_get_alloc_profile(root, is_data);
again:
WARN_ON(num_bytes < root->sectorsize);
- ret = find_free_extent(root, num_bytes, empty_size, hint_byte, ins,
- flags, delalloc);
+ ret = find_free_extent(root, ram_bytes, num_bytes, empty_size,
+ hint_byte, ins, flags, delalloc);
if (!ret && !is_data) {
btrfs_dec_block_group_reservations(root->fs_info,
ins->objectid);
@@ -7958,6 +7963,7 @@ again:
num_bytes = min(num_bytes >> 1, ins->offset);
num_bytes = round_down(num_bytes, root->sectorsize);
num_bytes = max(num_bytes, min_alloc_size);
+ ram_bytes = num_bytes;
if (num_bytes == min_alloc_size)
final_tried = true;
goto again;
@@ -7995,7 +8001,7 @@ static int __btrfs_free_reserved_extent(struct btrfs_root *root,
if (btrfs_test_opt(root->fs_info, DISCARD))
ret = btrfs_discard_extent(root, start, len, NULL);
btrfs_add_free_space(cache, start, len);
- btrfs_update_reserved_bytes(cache, len, RESERVE_FREE, delalloc);
+ btrfs_free_reserved_bytes(cache, len, delalloc);
trace_btrfs_reserved_extent_free(root, start, len);
}
@@ -8208,6 +8214,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
{
int ret;
struct btrfs_block_group_cache *block_group;
+ struct btrfs_space_info *space_info;
/*
* Mixed block groups will exclude before processing the log so we only
@@ -8223,9 +8230,14 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
if (!block_group)
return -EINVAL;
- ret = btrfs_update_reserved_bytes(block_group, ins->offset,
- RESERVE_ALLOC_NO_ACCOUNT, 0);
- BUG_ON(ret); /* logic error */
+ space_info = block_group->space_info;
+ spin_lock(&space_info->lock);
+ spin_lock(&block_group->lock);
+ space_info->bytes_reserved += ins->offset;
+ block_group->reserved += ins->offset;
+ spin_unlock(&block_group->lock);
+ spin_unlock(&space_info->lock);
+
ret = alloc_reserved_file_extent(trans, root, 0, root_objectid,
0, owner, offset, ins, 1);
btrfs_put_block_group(block_group);
@@ -8368,7 +8380,7 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
if (IS_ERR(block_rsv))
return ERR_CAST(block_rsv);
- ret = btrfs_reserve_extent(root, blocksize, blocksize,
+ ret = btrfs_reserve_extent(root, blocksize, blocksize, blocksize,
empty_size, hint, &ins, 0, 0);
if (ret)
goto out_unuse;
@@ -8521,35 +8533,6 @@ reada:
wc->reada_slot = slot;
}
-/*
- * These may not be seen by the usual inc/dec ref code so we have to
- * add them here.
- */
-static int record_one_subtree_extent(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 bytenr,
- u64 num_bytes)
-{
- struct btrfs_qgroup_extent_record *qrecord;
- struct btrfs_delayed_ref_root *delayed_refs;
-
- qrecord = kmalloc(sizeof(*qrecord), GFP_NOFS);
- if (!qrecord)
- return -ENOMEM;
-
- qrecord->bytenr = bytenr;
- qrecord->num_bytes = num_bytes;
- qrecord->old_roots = NULL;
-
- delayed_refs = &trans->transaction->delayed_refs;
- spin_lock(&delayed_refs->lock);
- if (btrfs_qgroup_insert_dirty_extent(trans->fs_info,
- delayed_refs, qrecord))
- kfree(qrecord);
- spin_unlock(&delayed_refs->lock);
-
- return 0;
-}
-
static int account_leaf_items(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *eb)
@@ -8583,7 +8566,8 @@ static int account_leaf_items(struct btrfs_trans_handle *trans,
num_bytes = btrfs_file_extent_disk_num_bytes(eb, fi);
- ret = record_one_subtree_extent(trans, root, bytenr, num_bytes);
+ ret = btrfs_qgroup_insert_dirty_extent(trans, root->fs_info,
+ bytenr, num_bytes, GFP_NOFS);
if (ret)
return ret;
}
@@ -8732,8 +8716,9 @@ walk_down:
btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
path->locks[level] = BTRFS_READ_LOCK_BLOCKING;
- ret = record_one_subtree_extent(trans, root, child_bytenr,
- root->nodesize);
+ ret = btrfs_qgroup_insert_dirty_extent(trans,
+ root->fs_info, child_bytenr,
+ root->nodesize, GFP_NOFS);
if (ret)
goto out;
}
@@ -9906,6 +9891,7 @@ static int find_first_block_group(struct btrfs_root *root,
} else {
ret = 0;
}
+ free_extent_map(em);
goto out;
}
path->slots[0]++;
@@ -9942,6 +9928,7 @@ void btrfs_put_block_group_cache(struct btrfs_fs_info *info)
block_group->iref = 0;
block_group->inode = NULL;
spin_unlock(&block_group->lock);
+ ASSERT(block_group->io_ctl.inode == NULL);
iput(inode);
last = block_group->key.objectid + block_group->key.offset;
btrfs_put_block_group(block_group);
@@ -9999,6 +9986,10 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
free_excluded_extents(info->extent_root, block_group);
btrfs_remove_free_space_cache(block_group);
+ ASSERT(list_empty(&block_group->dirty_list));
+ ASSERT(list_empty(&block_group->io_list));
+ ASSERT(list_empty(&block_group->bg_list));
+ ASSERT(atomic_read(&block_group->count) == 1);
btrfs_put_block_group(block_group);
spin_lock(&info->block_group_cache_lock);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-05 18:39:37 +0300