btrfs: use narrower type for btrfs_transaction::num_dirty_bgs

The u64 is an overkill here, we could not possibly create that many
blockgroups in one transaction.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 41770ee..c3ccd9d 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2894,7 +2894,7 @@ int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans,
        struct btrfs_block_rsv *global_rsv;
        u64 num_heads = trans->transaction->delayed_refs.num_heads_ready;
        u64 csum_bytes = trans->transaction->delayed_refs.pending_csums;
-       u64 num_dirty_bgs = trans->transaction->num_dirty_bgs;
+       unsigned int num_dirty_bgs = trans->transaction->num_dirty_bgs;
        u64 num_bytes, num_dirty_bgs_bytes;
        int ret = 0;
 

diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index edf5311..1805fd1 100644 (file)
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -70,7 +70,7 @@ struct btrfs_transaction {
        struct list_head dirty_bgs;
        struct list_head io_bgs;
        struct list_head dropped_roots;
-       u64 num_dirty_bgs;
+       unsigned int num_dirty_bgs;
 
        /*
         * we need to make sure block group deletion doesn't race with