diff options
Diffstat (limited to 'include/sys/zil_impl.h')
| -rw-r--r-- | include/sys/zil_impl.h | 29 |
1 files changed, 8 insertions, 21 deletions
diff --git a/include/sys/zil_impl.h b/include/sys/zil_impl.h index 174fef334..d2f401865 100644 --- a/include/sys/zil_impl.h +++ b/include/sys/zil_impl.h @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2012, 2017 by Delphix. All rights reserved. + * Copyright (c) 2012, 2018 by Delphix. All rights reserved. */ /* Portions Copyright 2010 Robert Milkowski */ @@ -209,6 +209,13 @@ struct zilog { uint_t zl_prev_rotor; /* rotor for zl_prev[] */ txg_node_t zl_dirty_link; /* protected by dp_dirty_zilogs list */ uint64_t zl_dirty_max_txg; /* highest txg used to dirty zilog */ + /* + * Max block size for this ZIL. Note that this can not be changed + * while the ZIL is in use because consumers (ZPL/zvol) need to take + * this into account when deciding between WR_COPIED and WR_NEED_COPY + * (see zil_max_copied_data()). + */ + uint64_t zl_max_block_size; }; typedef struct zil_bp_node { @@ -216,26 +223,6 @@ typedef struct zil_bp_node { avl_node_t zn_node; } zil_bp_node_t; -/* - * Maximum amount of write data that can be put into single log block. - */ -#define ZIL_MAX_LOG_DATA (SPA_OLD_MAXBLOCKSIZE - sizeof (zil_chain_t) - \ - sizeof (lr_write_t)) - -/* - * Maximum amount of log space we agree to waste to reduce number of - * WR_NEED_COPY chunks to reduce zl_get_data() overhead (~12%). - */ -#define ZIL_MAX_WASTE_SPACE (ZIL_MAX_LOG_DATA / 8) - -/* - * Maximum amount of write data for WR_COPIED. Fall back to WR_NEED_COPY - * as more space efficient if we can't fit at least two log records into - * maximum sized log block. - */ -#define ZIL_MAX_COPIED_DATA ((SPA_OLD_MAXBLOCKSIZE - \ - sizeof (zil_chain_t)) / 2 - sizeof (lr_write_t)) - #ifdef __cplusplus } #endif |