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DDT: Make children writes inherit allocator

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Even though unlike gang children it is not so critical for dedup
children to inherit parent's allocator, there is still no reason
for them to have allocation policy different from normal writes.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #17961
This commit is contained in:
Alexander Motin 2025-12-01 13:30:27 -05:00 committed by Brian Behlendorf
parent cdbe788a39
commit 2aad3dee23
1 changed files with 4 additions and 3 deletions
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7
module/zfs/zio.c
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@ -3088,7 +3088,7 @@ zio_gang_issue(zio_t *zio)
}
static void
zio_gang_inherit_allocator(zio_t *pio, zio_t *cio)
zio_inherit_allocator(zio_t *pio, zio_t *cio)
{
cio->io_allocator = pio->io_allocator;
}
@ -3223,7 +3223,7 @@ zio_write_gang_block(zio_t *pio, metaslab_class_t *mc)
zio_write_gang_done, NULL, pio->io_priority,
ZIO_GANG_CHILD_FLAGS(pio), &pio->io_bookmark);
zio_gang_inherit_allocator(pio, zio);
zio_inherit_allocator(pio, zio);
if (pio->io_flags & ZIO_FLAG_ALLOC_THROTTLED) {
boolean_t more;
VERIFY(metaslab_class_throttle_reserve(mc, zio->io_allocator,
@ -3285,7 +3285,7 @@ zio_write_gang_block(zio_t *pio, metaslab_class_t *mc)
(allocated ? ZIO_FLAG_PREALLOCATED : 0), &pio->io_bookmark);
resid -= psize;
zio_gang_inherit_allocator(zio, cio);
zio_inherit_allocator(zio, cio);
if (allocated) {
metaslab_trace_move(&cio_list, &cio->io_alloc_list);
metaslab_group_alloc_increment_all(spa,
@ -4062,6 +4062,7 @@ zio_ddt_write(zio_t *zio)
zio_ddt_child_write_ready, NULL,
zio_ddt_child_write_done, dde, zio->io_priority,
ZIO_DDT_CHILD_FLAGS(zio), &zio->io_bookmark);
zio_inherit_allocator(zio, cio);
zio_push_transform(cio, zio->io_abd, zio->io_size, 0, NULL);