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/dmu_objset.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/dmu_objset.h')
| -rw-r--r-- | include/sys/dmu_objset.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/sys/dmu_objset.h b/include/sys/dmu_objset.h index 013b6ec34..f42474429 100644 --- a/include/sys/dmu_objset.h +++ b/include/sys/dmu_objset.h @@ -20,6 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. */ /* Portions Copyright 2010 Robert Milkowski */ @@ -129,6 +130,8 @@ struct objset { ((os)->os_secondary_cache == ZFS_CACHE_ALL || \ (os)->os_secondary_cache == ZFS_CACHE_METADATA) +#define DMU_OS_IS_L2COMPRESSIBLE(os) ((os)->os_compress != ZIO_COMPRESS_OFF) + /* called from zpl */ int dmu_objset_hold(const char *name, void *tag, objset_t **osp); int dmu_objset_own(const char *name, dmu_objset_type_t type, |