summaryrefslogtreecommitdiff
path: root/fs/btrfs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/extent-tree.c111
-rw-r--r--fs/btrfs/space-info.c106
-rw-r--r--fs/btrfs/space-info.h8
3 files changed, 114 insertions, 111 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index c55d1bcbb196..7b4a287e0c5c 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4485,14 +4485,6 @@ skip_async:
}
}
-struct reserve_ticket {
- u64 orig_bytes;
- u64 bytes;
- int error;
- struct list_head list;
- wait_queue_head_t wait;
-};
-
/**
* maybe_commit_transaction - possibly commit the transaction if its ok to
* @root - the root we're allocating for
@@ -5211,109 +5203,6 @@ int btrfs_delayed_refs_rsv_refill(struct btrfs_fs_info *fs_info,
return 0;
}
-/*
- * This is for space we already have accounted in space_info->bytes_may_use, so
- * basically when we're returning space from block_rsv's.
- */
-void btrfs_space_info_add_old_bytes(struct btrfs_fs_info *fs_info,
- struct btrfs_space_info *space_info,
- u64 num_bytes)
-{
- struct reserve_ticket *ticket;
- struct list_head *head;
- u64 used;
- enum btrfs_reserve_flush_enum flush = BTRFS_RESERVE_NO_FLUSH;
- bool check_overcommit = false;
-
- spin_lock(&space_info->lock);
- head = &space_info->priority_tickets;
-
- /*
- * If we are over our limit then we need to check and see if we can
- * overcommit, and if we can't then we just need to free up our space
- * and not satisfy any requests.
- */
- used = btrfs_space_info_used(space_info, true);
- if (used - num_bytes >= space_info->total_bytes)
- check_overcommit = true;
-again:
- while (!list_empty(head) && num_bytes) {
- ticket = list_first_entry(head, struct reserve_ticket,
- list);
- /*
- * We use 0 bytes because this space is already reserved, so
- * adding the ticket space would be a double count.
- */
- if (check_overcommit &&
- !btrfs_can_overcommit(fs_info, space_info, 0, flush, false))
- break;
- if (num_bytes >= ticket->bytes) {
- 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;
- num_bytes = 0;
- }
- }
-
- if (num_bytes && head == &space_info->priority_tickets) {
- head = &space_info->tickets;
- flush = BTRFS_RESERVE_FLUSH_ALL;
- goto again;
- }
- btrfs_space_info_update_bytes_may_use(fs_info, space_info, -num_bytes);
- trace_btrfs_space_reservation(fs_info, "space_info",
- space_info->flags, num_bytes, 0);
- spin_unlock(&space_info->lock);
-}
-
-/*
- * This is for newly allocated space that isn't accounted in
- * space_info->bytes_may_use yet. So if we allocate a chunk or unpin an extent
- * we use this helper.
- */
-void btrfs_space_info_add_new_bytes(struct btrfs_fs_info *fs_info,
- struct btrfs_space_info *space_info,
- u64 num_bytes)
-{
- struct reserve_ticket *ticket;
- struct list_head *head = &space_info->priority_tickets;
-
-again:
- while (!list_empty(head) && num_bytes) {
- ticket = list_first_entry(head, struct reserve_ticket,
- list);
- if (num_bytes >= ticket->bytes) {
- trace_btrfs_space_reservation(fs_info, "space_info",
- space_info->flags,
- ticket->bytes, 1);
- list_del_init(&ticket->list);
- num_bytes -= ticket->bytes;
- btrfs_space_info_update_bytes_may_use(fs_info,
- space_info, ticket->bytes);
- ticket->bytes = 0;
- space_info->tickets_id++;
- wake_up(&ticket->wait);
- } else {
- trace_btrfs_space_reservation(fs_info, "space_info",
- space_info->flags,
- num_bytes, 1);
- btrfs_space_info_update_bytes_may_use(fs_info,
- space_info, num_bytes);
- ticket->bytes -= num_bytes;
- num_bytes = 0;
- }
- }
-
- if (num_bytes && head == &space_info->priority_tickets) {
- head = &space_info->tickets;
- goto again;
- }
-}
-
static u64 block_rsv_release_bytes(struct btrfs_fs_info *fs_info,
struct btrfs_block_rsv *block_rsv,
struct btrfs_block_rsv *dest, u64 num_bytes,
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c
index 9dc30081c2db..50046e8d7c71 100644
--- a/fs/btrfs/space-info.c
+++ b/fs/btrfs/space-info.c
@@ -240,3 +240,109 @@ int btrfs_can_overcommit(struct btrfs_fs_info *fs_info,
return 1;
return 0;
}
+
+/*
+ * This is for space we already have accounted in space_info->bytes_may_use, so
+ * basically when we're returning space from block_rsv's.
+ */
+void btrfs_space_info_add_old_bytes(struct btrfs_fs_info *fs_info,
+ struct btrfs_space_info *space_info,
+ u64 num_bytes)
+{
+ struct reserve_ticket *ticket;
+ struct list_head *head;
+ u64 used;
+ enum btrfs_reserve_flush_enum flush = BTRFS_RESERVE_NO_FLUSH;
+ bool check_overcommit = false;
+
+ spin_lock(&space_info->lock);
+ head = &space_info->priority_tickets;
+
+ /*
+ * If we are over our limit then we need to check and see if we can
+ * overcommit, and if we can't then we just need to free up our space
+ * and not satisfy any requests.
+ */
+ used = btrfs_space_info_used(space_info, true);
+ if (used - num_bytes >= space_info->total_bytes)
+ check_overcommit = true;
+again:
+ while (!list_empty(head) && num_bytes) {
+ ticket = list_first_entry(head, struct reserve_ticket,
+ list);
+ /*
+ * We use 0 bytes because this space is already reserved, so
+ * adding the ticket space would be a double count.
+ */
+ if (check_overcommit &&
+ !btrfs_can_overcommit(fs_info, space_info, 0, flush,
+ false))
+ break;
+ if (num_bytes >= ticket->bytes) {
+ 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;
+ num_bytes = 0;
+ }
+ }
+
+ if (num_bytes && head == &space_info->priority_tickets) {
+ head = &space_info->tickets;
+ flush = BTRFS_RESERVE_FLUSH_ALL;
+ goto again;
+ }
+ btrfs_space_info_update_bytes_may_use(fs_info, space_info, -num_bytes);
+ trace_btrfs_space_reservation(fs_info, "space_info",
+ space_info->flags, num_bytes, 0);
+ spin_unlock(&space_info->lock);
+}
+
+/*
+ * This is for newly allocated space that isn't accounted in
+ * space_info->bytes_may_use yet. So if we allocate a chunk or unpin an extent
+ * we use this helper.
+ */
+void btrfs_space_info_add_new_bytes(struct btrfs_fs_info *fs_info,
+ struct btrfs_space_info *space_info,
+ u64 num_bytes)
+{
+ struct reserve_ticket *ticket;
+ struct list_head *head = &space_info->priority_tickets;
+
+again:
+ while (!list_empty(head) && num_bytes) {
+ ticket = list_first_entry(head, struct reserve_ticket,
+ list);
+ if (num_bytes >= ticket->bytes) {
+ trace_btrfs_space_reservation(fs_info, "space_info",
+ space_info->flags,
+ ticket->bytes, 1);
+ list_del_init(&ticket->list);
+ num_bytes -= ticket->bytes;
+ btrfs_space_info_update_bytes_may_use(fs_info,
+ space_info,
+ ticket->bytes);
+ ticket->bytes = 0;
+ space_info->tickets_id++;
+ wake_up(&ticket->wait);
+ } else {
+ trace_btrfs_space_reservation(fs_info, "space_info",
+ space_info->flags,
+ num_bytes, 1);
+ btrfs_space_info_update_bytes_may_use(fs_info,
+ space_info,
+ num_bytes);
+ ticket->bytes -= num_bytes;
+ num_bytes = 0;
+ }
+ }
+
+ if (num_bytes && head == &space_info->priority_tickets) {
+ head = &space_info->tickets;
+ goto again;
+ }
+}
diff --git a/fs/btrfs/space-info.h b/fs/btrfs/space-info.h
index 702e431580c6..7df09731a3fa 100644
--- a/fs/btrfs/space-info.h
+++ b/fs/btrfs/space-info.h
@@ -69,6 +69,14 @@ struct btrfs_space_info {
struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES];
};
+struct reserve_ticket {
+ u64 orig_bytes;
+ u64 bytes;
+ int error;
+ struct list_head list;
+ wait_queue_head_t wait;
+};
+
static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
{
return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) &&
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 21:56:20 +0300