Author: mav Date: Wed Jul 26 17:42:43 2017 New Revision: 321573 URL: https://svnweb.freebsd.org/changeset/base/321573
Log: MFC r319748: MFV r319738: 8155 simplify dmu_write_policy handling of pre-compressed buffers illumos/illumos-gate@adaec86ad212d9fd756bee322934fa54d1258605 https://github.com/illumos/illumos-gate/commit/adaec86ad212d9fd756bee322934fa54d1258605 https://www.illumos.org/issues/8155 When writing pre-compressed buffers, arc_write() requires that the compression algorithm used to compress the buffer matches the compression algorithm requested by the zio_prop_t, which is set by dmu_write_policy(). This makes dmu_write_policy() and its callers a bit more complicated. We can simplify this by making arc_write() trust the caller to supply the type of pre-compressed buffer that it wants to write, and override the compression setting in the zio_prop_t. Reviewed by: Dan Kimmel <dan.kim...@delphix.com> Reviewed by: George Wilson <george.wil...@delphix.com> Approved by: Robert Mustacchi <r...@joyent.com> Author: Matthew Ahrens <mahr...@delphix.com> Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Wed Jul 26 17:40:13 2017 (r321572) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Wed Jul 26 17:42:43 2017 (r321573) @@ -5937,6 +5937,7 @@ arc_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr arc_buf_hdr_t *hdr = buf->b_hdr; arc_write_callback_t *callback; zio_t *zio; + zio_prop_t localprop = *zp; ASSERT3P(ready, !=, NULL); ASSERT3P(done, !=, NULL); @@ -5947,7 +5948,13 @@ arc_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr if (l2arc) arc_hdr_set_flags(hdr, ARC_FLAG_L2CACHE); if (ARC_BUF_COMPRESSED(buf)) { - ASSERT3U(zp->zp_compress, !=, ZIO_COMPRESS_OFF); + /* + * We're writing a pre-compressed buffer. Make the + * compression algorithm requested by the zio_prop_t match + * the pre-compressed buffer's compression algorithm. + */ + localprop.zp_compress = HDR_GET_COMPRESS(hdr); + ASSERT3U(HDR_GET_LSIZE(hdr), !=, arc_buf_size(buf)); zio_flags |= ZIO_FLAG_RAW; } @@ -5982,7 +5989,7 @@ arc_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr ASSERT3P(hdr->b_l1hdr.b_pdata, ==, NULL); zio = zio_write(pio, spa, txg, bp, buf->b_data, - HDR_GET_LSIZE(hdr), arc_buf_size(buf), zp, arc_write_ready, + HDR_GET_LSIZE(hdr), arc_buf_size(buf), &localprop, arc_write_ready, (children_ready != NULL) ? arc_write_children_ready : NULL, arc_write_physdone, arc_write_done, callback, priority, zio_flags, zb); Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c Wed Jul 26 17:40:13 2017 (r321572) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c Wed Jul 26 17:42:43 2017 (r321573) @@ -3536,9 +3536,7 @@ dbuf_write(dbuf_dirty_record_t *dr, arc_buf_t *data, d wp_flag = WP_SPILL; wp_flag |= (db->db_state == DB_NOFILL) ? WP_NOFILL : 0; - dmu_write_policy(os, dn, db->db_level, wp_flag, - (data != NULL && arc_get_compression(data) != ZIO_COMPRESS_OFF) ? - arc_get_compression(data) : ZIO_COMPRESS_INHERIT, &zp); + dmu_write_policy(os, dn, db->db_level, wp_flag, &zp); DB_DNODE_EXIT(db); /* Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c Wed Jul 26 17:40:13 2017 (r321572) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c Wed Jul 26 17:42:43 2017 (r321573) @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2011, 2016 by Delphix. All rights reserved. + * Copyright (c) 2011, 2017 by Delphix. All rights reserved. */ /* Copyright (c) 2013 by Saso Kiselkov. All rights reserved. */ /* Copyright (c) 2013, Joyent, Inc. All rights reserved. */ @@ -1794,8 +1794,7 @@ dmu_sync(zio_t *pio, uint64_t txg, dmu_sync_cb_t *done DB_DNODE_ENTER(db); dn = DB_DNODE(db); - dmu_write_policy(os, dn, db->db_level, WP_DMU_SYNC, - ZIO_COMPRESS_INHERIT, &zp); + dmu_write_policy(os, dn, db->db_level, WP_DMU_SYNC, &zp); DB_DNODE_EXIT(db); /* @@ -1967,8 +1966,7 @@ SYSCTL_INT(_vfs_zfs, OID_AUTO, mdcomp_disable, CTLFLAG int zfs_redundant_metadata_most_ditto_level = 2; void -dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, - enum zio_compress override_compress, zio_prop_t *zp) +dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp) { dmu_object_type_t type = dn ? dn->dn_type : DMU_OT_OBJSET; boolean_t ismd = (level > 0 || DMU_OT_IS_METADATA(type) || @@ -1980,11 +1978,7 @@ dmu_write_policy(objset_t *os, dnode_t *dn, int level, boolean_t nopwrite = B_FALSE; boolean_t dedup_verify = os->os_dedup_verify; int copies = os->os_copies; - boolean_t lz4_ac = spa_feature_is_active(os->os_spa, - SPA_FEATURE_LZ4_COMPRESS); - IMPLY(override_compress == ZIO_COMPRESS_LZ4, lz4_ac); - /* * We maintain different write policies for each of the following * types of data: @@ -2071,14 +2065,7 @@ dmu_write_policy(objset_t *os, dnode_t *dn, int level, } zp->zp_checksum = checksum; - - /* - * If we're writing a pre-compressed buffer, the compression type we use - * must match the data. If it hasn't been compressed yet, then we should - * use the value dictated by the policies above. - */ - zp->zp_compress = override_compress != ZIO_COMPRESS_INHERIT - ? override_compress : compress; + zp->zp_compress = compress; ASSERT3U(zp->zp_compress, !=, ZIO_COMPRESS_INHERIT); zp->zp_type = (wp & WP_SPILL) ? dn->dn_bonustype : type; Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c Wed Jul 26 17:40:13 2017 (r321572) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c Wed Jul 26 17:42:43 2017 (r321573) @@ -1201,7 +1201,7 @@ dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); arc_release(os->os_phys_buf, &os->os_phys_buf); - dmu_write_policy(os, NULL, 0, 0, ZIO_COMPRESS_INHERIT, &zp); + dmu_write_policy(os, NULL, 0, 0, &zp); zio = arc_write(pio, os->os_spa, tx->tx_txg, blkptr_copy, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h Wed Jul 26 17:40:13 2017 (r321572) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h Wed Jul 26 17:42:43 2017 (r321573) @@ -21,7 +21,7 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2011, 2016 by Delphix. All rights reserved. + * Copyright (c) 2011, 2017 by Delphix. All rights reserved. * Copyright 2011 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2012, Joyent, Inc. All rights reserved. * Copyright 2013 DEY Storage Systems, Inc. @@ -422,7 +422,7 @@ dmu_write_embedded(objset_t *os, uint64_t object, uint #define WP_SPILL 0x4 void dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, - enum zio_compress compress_override, struct zio_prop *zp); + struct zio_prop *zp); /* * The bonus data is accessed more or less like a regular buffer. * You must dmu_bonus_hold() to get the buffer, which will give you a _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
