From 6d48755d02b150de7f47e7b4753202f2fc9f990f Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 15 Oct 2010 15:13:32 -0400 Subject: [PATCH] Btrfs: fix reservation code for mixed block groups The global reservation stuff tries to add together DATA and METADATA used in order to figure out how much to reserve for everything, but this doesn't work right for mixed block groups. Instead if we have mixed block groups just set data used to 0. Also with mixed block groups we will use bytes_may_use for keeping track of delalloc bytes, so we need to take that into account in our reservation calculations. Signed-off-by: Josef Bacik --- fs/btrfs/extent-tree.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 4669c6f8a44..0f27f7b4880 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3213,7 +3213,8 @@ static int reserve_metadata_bytes(struct btrfs_block_rsv *block_rsv, spin_lock(&space_info->lock); unused = space_info->bytes_used + space_info->bytes_reserved + - space_info->bytes_pinned + space_info->bytes_readonly; + space_info->bytes_pinned + space_info->bytes_readonly + + space_info->bytes_may_use; if (unused < space_info->total_bytes) unused = space_info->total_bytes - unused; @@ -3507,6 +3508,8 @@ static u64 calc_global_metadata_size(struct btrfs_fs_info *fs_info) sinfo = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA); spin_lock(&sinfo->lock); + if (sinfo->flags & BTRFS_BLOCK_GROUP_DATA) + data_used = 0; meta_used = sinfo->bytes_used; spin_unlock(&sinfo->lock); @@ -3534,7 +3537,8 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info) block_rsv->size = num_bytes; num_bytes = sinfo->bytes_used + sinfo->bytes_pinned + - sinfo->bytes_reserved + sinfo->bytes_readonly; + sinfo->bytes_reserved + sinfo->bytes_readonly + + sinfo->bytes_may_use; if (sinfo->total_bytes > num_bytes) { num_bytes = sinfo->total_bytes - num_bytes; -- 2.41.0