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 /module/zfs/dbuf.c | |
| 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 'module/zfs/dbuf.c')
| -rw-r--r-- | module/zfs/dbuf.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c index 46f42dd7c..faa6cc345 100644 --- a/module/zfs/dbuf.c +++ b/module/zfs/dbuf.c @@ -22,6 +22,7 @@ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2011 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2012 by Delphix. All rights reserved. + * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. */ #include <sys/zfs_context.h> @@ -614,6 +615,8 @@ dbuf_read_impl(dmu_buf_impl_t *db, zio_t *zio, uint32_t *flags) if (DBUF_IS_L2CACHEABLE(db)) aflags |= ARC_L2CACHE; + if (DBUF_IS_L2COMPRESSIBLE(db)) + aflags |= ARC_L2COMPRESS; SET_BOOKMARK(&zb, db->db_objset->os_dsl_dataset ? db->db_objset->os_dsl_dataset->ds_object : DMU_META_OBJSET, @@ -2822,9 +2825,10 @@ dbuf_write(dbuf_dirty_record_t *dr, arc_buf_t *data, dmu_tx_t *tx) } else { ASSERT(arc_released(data)); dr->dr_zio = arc_write(zio, os->os_spa, txg, - db->db_blkptr, data, DBUF_IS_L2CACHEABLE(db), &zp, - dbuf_write_ready, dbuf_write_done, db, - ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb); + db->db_blkptr, data, DBUF_IS_L2CACHEABLE(db), + DBUF_IS_L2COMPRESSIBLE(db), &zp, dbuf_write_ready, + dbuf_write_done, db, ZIO_PRIORITY_ASYNC_WRITE, + ZIO_FLAG_MUSTSUCCEED, &zb); } } |