diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 427ca5de8542..bf1451bf3ed7 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -84,6 +84,14 @@ static const int btrfs_csum_sizes[] = { 4 }; #define BTRFS_DIRTY_METADATA_THRESH SZ_32M +/* + * Use large batch size to reduce overhead of metadata updates. On the reader + * side, we only read it when we are close to ENOSPC and the read overhead is + * mostly related to the number of CPUs, so it is OK to use arbitrary large + * value here. + */ +#define BTRFS_TOTAL_BYTES_PINNED_BATCH SZ_128M + #define BTRFS_MAX_EXTENT_SIZE SZ_128M |