diff options
| author | Saso Kiselkov <[email protected]> | 2013-08-01 13:02:10 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2013-08-08 13:27:21 -0700 |
| commit | 3a17a7a99a1a6332d0999f9be68e2b8dc3933de1 (patch) | |
| tree | 6f926bc52a8ae98a69d4b258e66bde381fa691fa /include/sys/arc.h | |
| parent | c11a12bc3b2e5ee9a6bd74e26f1a396b6025fbd4 (diff) | |
Illumos #3137 L2ARC compression
3137 L2ARC compression
Reviewed by: George Wilson <[email protected]>
Reviewed by: Matthew Ahrens <[email protected]>
Approved by: Dan McDonald <[email protected]>
References:
illumos/illumos-gate@aad02571bc59671aa3103bb070ae365f531b0b62
https://www.illumos.org/issues/3137
http://wiki.illumos.org/display/illumos/L2ARC+Compression
Notes for Linux port:
A l2arc_nocompress module option was added to prevent the
compression of l2arc buffers regardless of how a dataset's
compression property is set. This allows the legacy behavior
to be preserved.
Ported by: James H <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #1379
Diffstat (limited to 'include/sys/arc.h')
| -rw-r--r-- | include/sys/arc.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/sys/arc.h b/include/sys/arc.h index c88c31148..67882197a 100644 --- a/include/sys/arc.h +++ b/include/sys/arc.h @@ -21,6 +21,7 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2013 by Delphix. All rights reserved. + * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. */ #ifndef _SYS_ARC_H @@ -78,6 +79,7 @@ typedef enum arc_buf_contents { #define ARC_PREFETCH (1 << 3) /* I/O is a prefetch */ #define ARC_CACHED (1 << 4) /* I/O was already in cache */ #define ARC_L2CACHE (1 << 5) /* cache in L2ARC */ +#define ARC_L2COMPRESS (1 << 6) /* compress in L2ARC */ /* * The following breakdows of arc_size exist for kstat only. @@ -114,9 +116,9 @@ int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp, arc_done_func_t *done, void *private, int priority, int flags, uint32_t *arc_flags, const zbookmark_t *zb); zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg, - blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, const zio_prop_t *zp, - arc_done_func_t *ready, arc_done_func_t *done, void *private, - int priority, int zio_flags, const zbookmark_t *zb); + blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, boolean_t l2arc_compress, + const zio_prop_t *zp, arc_done_func_t *ready, arc_done_func_t *done, + void *private, int priority, int zio_flags, const zbookmark_t *zb); arc_prune_t *arc_add_prune_callback(arc_prune_func_t *func, void *private); void arc_remove_prune_callback(arc_prune_t *p); |