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spa_preferred_class: pass the entire zio 

Rather than picking out specific values out of the properties, just pass
the entire zio in, to make it easier in the future to use more of that
info to decide on the storage class.

I would have rathered just pass io_prop in, but having spa.h include
zio.h gets a bit tricky.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Closes #15894
This commit is contained in:
Rob Norris 2023-06-27 11:03:29 +10:00 committed by Brian Behlendorf
parent ed87d456e4
commit e26b3771ee
3 changed files with 11 additions and 12 deletions
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3
include/sys/spa.h
View File

@ -1049,8 +1049,7 @@ extern metaslab_class_t *spa_log_class(spa_t *spa);
extern metaslab_class_t *spa_embedded_log_class(spa_t *spa);
extern metaslab_class_t *spa_special_class(spa_t *spa);
extern metaslab_class_t *spa_dedup_class(spa_t *spa);
extern metaslab_class_t *spa_preferred_class(spa_t *spa, uint64_t size,
dmu_object_type_t objtype, uint_t level, uint_t special_smallblk);
extern metaslab_class_t *spa_preferred_class(spa_t *spa, const zio_t *zio);
extern boolean_t spa_special_has_ddt(spa_t *spa);
extern void spa_evicting_os_register(spa_t *, objset_t *os);

13
module/zfs/spa_misc.c
View File

@ -2007,9 +2007,11 @@ spa_special_has_ddt(spa_t *spa)
* Locate an appropriate allocation class
*/
metaslab_class_t *
spa_preferred_class(spa_t *spa, uint64_t size, dmu_object_type_t objtype,
uint_t level, uint_t special_smallblk)
spa_preferred_class(spa_t *spa, const zio_t *zio)
{
const zio_prop_t *zp = &zio->io_prop;
dmu_object_type_t objtype = zp->zp_type;
/*
* ZIL allocations determine their class in zio_alloc_zil().
*/
@ -2027,14 +2029,15 @@ spa_preferred_class(spa_t *spa, uint64_t size, dmu_object_type_t objtype,
}
/* Indirect blocks for user data can land in special if allowed */
if (level > 0 && (DMU_OT_IS_FILE(objtype) || objtype == DMU_OT_ZVOL)) {
if (zp->zp_level > 0 &&
(DMU_OT_IS_FILE(objtype) || objtype == DMU_OT_ZVOL)) {
if (has_special_class && zfs_user_indirect_is_special)
return (spa_special_class(spa));
else
return (spa_normal_class(spa));
}
if (DMU_OT_IS_METADATA(objtype) || level > 0) {
if (DMU_OT_IS_METADATA(objtype) || zp->zp_level > 0) {
if (has_special_class)
return (spa_special_class(spa));
else
@ -2047,7 +2050,7 @@ spa_preferred_class(spa_t *spa, uint64_t size, dmu_object_type_t objtype,
* zfs_special_class_metadata_reserve_pct exclusively for metadata.
*/
if (DMU_OT_IS_FILE(objtype) &&
has_special_class && size <= special_smallblk) {
has_special_class && zio->io_size <= zp->zp_zpl_smallblk) {
metaslab_class_t *special = spa_special_class(spa);
uint64_t alloc = metaslab_class_get_alloc(special);
uint64_t space = metaslab_class_get_space(special);

7
module/zfs/zio.c
View File

@ -3637,8 +3637,7 @@ zio_dva_throttle(zio_t *zio)
metaslab_class_t *mc;
/* locate an appropriate allocation class */
mc = spa_preferred_class(spa, zio->io_size, zio->io_prop.zp_type,
zio->io_prop.zp_level, zio->io_prop.zp_zpl_smallblk);
mc = spa_preferred_class(spa, zio);
if (zio->io_priority == ZIO_PRIORITY_SYNC_WRITE ||
!mc->mc_alloc_throttle_enabled ||
@ -3710,9 +3709,7 @@ zio_dva_allocate(zio_t *zio)
*/
mc = zio->io_metaslab_class;
if (mc == NULL) {
mc = spa_preferred_class(spa, zio->io_size,
zio->io_prop.zp_type, zio->io_prop.zp_level,
zio->io_prop.zp_zpl_smallblk);
mc = spa_preferred_class(spa, zio);
zio->io_metaslab_class = mc;
}