From: Josef Bacik Date: Fri, 15 Oct 2010 19:13:32 +0000 (-0400) Subject: Btrfs: fix reservation code for mixed block groups X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6d48755d02b150de7f47e7b4753202f2fc9f990f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 --- diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 4669c6f8a44d..0f27f7b48804 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;