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Re-embed multilist_t storage

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This commit partially reverts changes to multilists in PR 7968
(multi-threaded spa-sync()) and adds some cache line alignments to
separate read-only multilists and heavily modified refcount's to different
cache lines.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-by: iXsystems, Inc.
Closes #12158
This commit is contained in:
Alexander Motin
2021-06-10 12:42:31 -04:00
committed by GitHub
parent eec5ba113e
commit ffdf019cb3
12 changed files with 99 additions and 104 deletions
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include/sys/dmu_objset.h
+2 -2
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@@ -153,7 +153,7 @@ struct objset {
/* no lock needed: */
struct dmu_tx *os_synctx; /* XXX sketchy */
zil_header_t os_zil_header;
multilist_t *os_synced_dnodes;
multilist_t os_synced_dnodes;
uint64_t os_flags;
uint64_t os_freed_dnodes;
boolean_t os_rescan_dnodes;
@@ -172,7 +172,7 @@ struct objset {
/* Protected by os_lock */
kmutex_t os_lock;
multilist_t *os_dirty_dnodes[TXG_SIZE];
multilist_t os_dirty_dnodes[TXG_SIZE];
list_t os_dnodes;
list_t os_downgraded_dbufs;