diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 36 | ||||
| -rw-r--r-- | fs/btrfs/inode.c | 11 | ||||
| -rw-r--r-- | fs/btrfs/transaction.c | 6 |
3 files changed, 36 insertions, 17 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index e2287c7c10be..aa31fe97c47a 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4838,7 +4838,7 @@ static inline int need_do_async_reclaim(struct btrfs_space_info *space_info, u64 thresh = div_factor_fine(space_info->total_bytes, 98); /* If we're just plain full then async reclaim just slows us down. */ - if (space_info->bytes_used >= thresh) + if ((space_info->bytes_used + space_info->bytes_reserved) >= thresh) return 0; return (used >= thresh && !btrfs_fs_closing(fs_info) && @@ -5373,27 +5373,33 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info) block_rsv->size = min_t(u64, num_bytes, SZ_512M); - num_bytes = sinfo->bytes_used + sinfo->bytes_pinned + - sinfo->bytes_reserved + sinfo->bytes_readonly + - sinfo->bytes_may_use; - - if (sinfo->total_bytes > num_bytes) { - num_bytes = sinfo->total_bytes - num_bytes; - block_rsv->reserved += num_bytes; - sinfo->bytes_may_use += num_bytes; - trace_btrfs_space_reservation(fs_info, "space_info", - sinfo->flags, num_bytes, 1); - } - - if (block_rsv->reserved >= block_rsv->size) { + if (block_rsv->reserved < block_rsv->size) { + num_bytes = sinfo->bytes_used + sinfo->bytes_pinned + + sinfo->bytes_reserved + sinfo->bytes_readonly + + sinfo->bytes_may_use; + if (sinfo->total_bytes > num_bytes) { + num_bytes = sinfo->total_bytes - num_bytes; + num_bytes = min(num_bytes, + block_rsv->size - block_rsv->reserved); + block_rsv->reserved += num_bytes; + sinfo->bytes_may_use += num_bytes; + trace_btrfs_space_reservation(fs_info, "space_info", + sinfo->flags, num_bytes, + 1); + } + } else if (block_rsv->reserved > block_rsv->size) { num_bytes = block_rsv->reserved - block_rsv->size; sinfo->bytes_may_use -= num_bytes; trace_btrfs_space_reservation(fs_info, "space_info", sinfo->flags, num_bytes, 0); block_rsv->reserved = block_rsv->size; - block_rsv->full = 1; } + if (block_rsv->reserved == block_rsv->size) + block_rsv->full = 1; + else + block_rsv->full = 0; + spin_unlock(&block_rsv->lock); spin_unlock(&sinfo->lock); } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index f8be74037f34..350b77220153 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4212,11 +4212,20 @@ static int truncate_space_check(struct btrfs_trans_handle *trans, { int ret; + /* + * This is only used to apply pressure to the enospc system, we don't + * intend to use this reservation at all. + */ bytes_deleted = btrfs_csum_bytes_to_leaves(root, bytes_deleted); + bytes_deleted *= root->nodesize; ret = btrfs_block_rsv_add(root, &root->fs_info->trans_block_rsv, bytes_deleted, BTRFS_RESERVE_NO_FLUSH); - if (!ret) + if (!ret) { + trace_btrfs_space_reservation(root->fs_info, "transaction", + trans->transid, + bytes_deleted, 1); trans->bytes_reserved += bytes_deleted; + } return ret; } diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index b6031ce474f7..e9e95ef0644f 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -637,6 +637,8 @@ struct btrfs_trans_handle *btrfs_start_transaction_fallback_global_rsv( trans->block_rsv = &root->fs_info->trans_block_rsv; trans->bytes_reserved = num_bytes; + trace_btrfs_space_reservation(root->fs_info, "transaction", + trans->transid, num_bytes, 1); return trans; } @@ -1375,7 +1377,9 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, rsv = trans->block_rsv; trans->block_rsv = &pending->block_rsv; trans->bytes_reserved = trans->block_rsv->reserved; - + trace_btrfs_space_reservation(root->fs_info, "transaction", + trans->transid, + trans->bytes_reserved, 1); dentry = pending->dentry; parent_inode = pending->dir; parent_root = BTRFS_I(parent_inode)->root; |