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zvol: Implement zvol threading as a Property

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Currently, zvol threading can be switched through the zvol_request_sync
module parameter system-wide. By making it a zvol property, zvol
threading can be switched per zvol.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #15409
This commit is contained in:
Ameer Hamza
2023-10-25 02:53:27 +05:00
committed by Brian Behlendorf
parent dbe839a9ca
commit 60387facd2
9 changed files with 51 additions and 2 deletions
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module/os/linux/zfs/zvol_os.c
+8 -1
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@@ -512,7 +512,7 @@ zvol_request_impl(zvol_state_t *zv, struct bio *bio, struct request *rq,
uint64_t size = io_size(bio, rq);
int rw = io_data_dir(bio, rq);
if (zvol_request_sync)
if (zvol_request_sync || zv->zv_threading == B_FALSE)
force_sync = 1;
zv_request_t zvr = {
@@ -1304,6 +1304,7 @@ zvol_os_create_minor(const char *name)
int error = 0;
int idx;
uint64_t hash = zvol_name_hash(name);
uint64_t volthreading;
bool replayed_zil = B_FALSE;
if (zvol_inhibit_dev)
@@ -1350,6 +1351,12 @@ zvol_os_create_minor(const char *name)
zv->zv_volsize = volsize;
zv->zv_objset = os;
/* Default */
zv->zv_threading = B_TRUE;
if (dsl_prop_get_integer(name, "volthreading", &volthreading, NULL)
== 0)
zv->zv_threading = volthreading;
set_capacity(zv->zv_zso->zvo_disk, zv->zv_volsize >> 9);
blk_queue_max_hw_sectors(zv->zv_zso->zvo_queue,