diff options
| author | David Quigley <[email protected]> | 2017-02-07 10:44:03 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2017-02-07 09:44:03 -0800 |
| commit | bef78122e606945efbf2e08845e7d5e8ead93c3c (patch) | |
| tree | d5d5e2e565a34444971fbff93507e4e079ac6a2b | |
| parent | cd5083c00c6215f4f15c04e30feeb5f9457ec896 (diff) | |
Add missing module_param for zfs_per_txg_dirty_frees_percent
When the code was added this tunable was not exposed via module params. Also it
was not documented. This patch changes the type from a uint32 to a ulong as
done with other percentage tunables and also documents it in the
zfs-module-parameters man page.
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: David Quigley <[email protected]>
Closes #5750
| -rw-r--r-- | man/man5/zfs-module-parameters.5 | 16 | ||||
| -rw-r--r-- | module/zfs/dmu.c | 7 |
2 files changed, 22 insertions, 1 deletions
diff --git a/man/man5/zfs-module-parameters.5 b/man/man5/zfs-module-parameters.5 index 8b9a4e8cc..b1c99cb17 100644 --- a/man/man5/zfs-module-parameters.5 +++ b/man/man5/zfs-module-parameters.5 @@ -1441,6 +1441,22 @@ Default value: \fB52,428,800\fR. .sp .ne 2 .na +\fBzfs_per_txg_dirty_frees_percent \fR (ulong) +.ad +.RS 12n +Tunable to control percentage of dirtied blocks from frees in one TXG. +After this threshold is crossed, additional dirty blocks from frees +wait until the next TXG. +A value of zero will disable this throttle. +.sp +Default value: \fB30\fR and \fB0\fR to disable. +.RE + + + +.sp +.ne 2 +.na \fBzfs_prefetch_disable\fR (int) .ad .RS 12n diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c index b0bceac25..4e62e0435 100644 --- a/module/zfs/dmu.c +++ b/module/zfs/dmu.c @@ -65,7 +65,7 @@ int zfs_nopwrite_enabled = 1; * wait until the next TXG. * A value of zero will disable this throttle. */ -uint32_t zfs_per_txg_dirty_frees_percent = 30; +unsigned long zfs_per_txg_dirty_frees_percent = 30; const dmu_object_type_info_t dmu_ot[DMU_OT_NUMTYPES] = { { DMU_BSWAP_UINT8, TRUE, "unallocated" }, @@ -2228,10 +2228,15 @@ EXPORT_SYMBOL(dmu_assign_arcbuf); EXPORT_SYMBOL(dmu_buf_hold); EXPORT_SYMBOL(dmu_ot); +/* BEGIN CSTYLED */ module_param(zfs_mdcomp_disable, int, 0644); MODULE_PARM_DESC(zfs_mdcomp_disable, "Disable meta data compression"); module_param(zfs_nopwrite_enabled, int, 0644); MODULE_PARM_DESC(zfs_nopwrite_enabled, "Enable NOP writes"); +module_param(zfs_per_txg_dirty_frees_percent, ulong, 0644); +MODULE_PARM_DESC(zfs_per_txg_dirty_frees_percent, + "percentage of dirtied blocks from frees in one TXG"); +/* END CSTYLED */ #endif |