diff options
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index e2287c7c10be..07f47a5d0d6f 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -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); } |