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Pass flags to more DMU write/hold functions

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Over the time many of DMU functions got flags argument to control
prefetch, caching, etc.  Few functions though left without it, even
though closer look shown that many of them do not require prefetch
due to their access pattern.  This patch adds the flags argument to
dmu_write(), dmu_buf_hold_array() and dmu_buf_hold_array_by_bonus(),
passing DMU_READ_NO_PREFETCH where applicable.

I am going to also pass DMU_UNCACHEDIO to some of them later.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #17872
This commit is contained in:
Alexander Motin
2025-10-29 14:17:51 -04:00
committed by GitHub
parent 3caf66c25b
commit dcada084b9
21 changed files with 69 additions and 47 deletions
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module/zfs/bptree.c
+6 -3
View File
@@ -137,7 +137,8 @@ bptree_add(objset_t *os, uint64_t obj, blkptr_t *bp, uint64_t birth_txg,
bte = kmem_zalloc(sizeof (*bte), KM_SLEEP);
bte->be_birth_txg = birth_txg;
bte->be_bp = *bp;
dmu_write(os, obj, bt->bt_end * sizeof (*bte), sizeof (*bte), bte, tx);
dmu_write(os, obj, bt->bt_end * sizeof (*bte), sizeof (*bte), bte, tx,
DMU_READ_NO_PREFETCH);
kmem_free(bte, sizeof (*bte));
dmu_buf_will_dirty(db, tx);
@@ -247,7 +248,8 @@ bptree_iterate(objset_t *os, uint64_t obj, boolean_t free, bptree_itor_t func,
ZB_DESTROYED_OBJSET);
ASSERT0(bte.be_zb.zb_level);
dmu_write(os, obj, i * sizeof (bte),
sizeof (bte), &bte, tx);
sizeof (bte), &bte, tx,
DMU_READ_NO_PREFETCH);
if (err == EIO || err == ECKSUM ||
err == ENXIO) {
/*
@@ -269,7 +271,8 @@ bptree_iterate(objset_t *os, uint64_t obj, boolean_t free, bptree_itor_t func,
*/
bte.be_birth_txg = UINT64_MAX;
dmu_write(os, obj, i * sizeof (bte),
sizeof (bte), &bte, tx);
sizeof (bte), &bte, tx,
DMU_READ_NO_PREFETCH);
}
if (!ioerr) {