OpenZFS 7252 - compressed zfs send / receive

OpenZFS 7252 - compressed zfs send / receive
OpenZFS 7628 - create long versions of ZFS send / receive options

Authored by: Dan Kimmel <[email protected]>
Reviewed by: George Wilson <[email protected]>
Reviewed by: John Kennedy <[email protected]>
Reviewed by: Matthew Ahrens <[email protected]>
Reviewed by: Paul Dagnelie <[email protected]>
Reviewed by: Pavel Zakharov <[email protected]>
Reviewed by: Sebastien Roy <[email protected]>
Reviewed by: David Quigley <[email protected]>
Reviewed by: Thomas Caputi <[email protected]>
Approved by: Dan McDonald <[email protected]>
Reviewed by: David Quigley <[email protected]>
Reviewed-by: loli10K <[email protected]>
Ported-by: bunder2015 <[email protected]>
Ported-by: Don Brady <[email protected]>
Ported-by: Brian Behlendorf <[email protected]>

Porting Notes:
- Most of 7252 was already picked up during ABD work.  This
  commit represents the gap from the final commit to openzfs.
- Fixed split_large_blocks check in do_dump()
- An alternate version of the write_compressible() function was
  implemented for Linux which does not depend on fio.  The behavior
  of fio differs significantly based on the exact version.
- mkholes was replaced with truncate for Linux.

OpenZFS-issue: https://www.illumos.org/issues/7252
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/5602294
Closes #6067

1 files changed, 2 insertions, 3 deletions

diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c
index b0b1bffab..d347c5b91 100644
--- a/module/zfs/dbuf.c
+++ b/module/zfs/dbuf.c
@@ -380,7 +380,6 @@ static void
 dbuf_evict_user(dmu_buf_impl_t *db)
 {
 	dmu_buf_user_t *dbu = db->db_user;
-	boolean_t has_async;
 
 	ASSERT(MUTEX_HELD(&db->db_mtx));
 
@@ -405,7 +404,7 @@ dbuf_evict_user(dmu_buf_impl_t *db)
 	 * containing the dbu.  In that case we need to take care to not
 	 * dereference dbu after calling the sync evict func.
 	 */
-	has_async = (dbu->dbu_evict_func_async != NULL);
+	boolean_t has_async = (dbu->dbu_evict_func_async != NULL);
 
 	if (dbu->dbu_evict_func_sync != NULL)
 		dbu->dbu_evict_func_sync(dbu);
@@ -3308,8 +3307,8 @@ dbuf_sync_leaf(dbuf_dirty_record_t *dr, dmu_tx_t *tx)
 		if (compress_type == ZIO_COMPRESS_OFF) {
 			*datap = arc_alloc_buf(os->os_spa, db, type, psize);
 		} else {
-			int lsize = arc_buf_lsize(*datap);
 			ASSERT3U(type, ==, ARC_BUFC_DATA);
+			int lsize = arc_buf_lsize(*datap);
 			*datap = arc_alloc_compressed_buf(os->os_spa, db,
 			    psize, lsize, compress_type);
 		}