diff options
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 32 | ||||
| -rw-r--r-- | include/linux/drbd_genl.h | 6 | ||||
| -rw-r--r-- | include/linux/drbd_limits.h | 6 |
3 files changed, 38 insertions, 6 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index fad03e4feef6..99339dfe4389 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -1348,12 +1348,38 @@ static bool write_ordering_changed(struct disk_conf *a, struct disk_conf *b) a->disk_drain != b->disk_drain; } -static void sanitize_disk_conf(struct disk_conf *disk_conf, struct drbd_backing_dev *nbc) +static void sanitize_disk_conf(struct drbd_device *device, struct disk_conf *disk_conf, + struct drbd_backing_dev *nbc) { + struct request_queue * const q = nbc->backing_bdev->bd_disk->queue; + if (disk_conf->al_extents < DRBD_AL_EXTENTS_MIN) disk_conf->al_extents = DRBD_AL_EXTENTS_MIN; if (disk_conf->al_extents > drbd_al_extents_max(nbc)) disk_conf->al_extents = drbd_al_extents_max(nbc); + + if (!blk_queue_discard(q) || !q->limits.discard_zeroes_data) { + disk_conf->rs_discard_granularity = 0; /* disable feature */ + drbd_info(device, "rs_discard_granularity feature disabled\n"); + } + + if (disk_conf->rs_discard_granularity) { + int orig_value = disk_conf->rs_discard_granularity; + int remainder; + + if (q->limits.discard_granularity > disk_conf->rs_discard_granularity) + disk_conf->rs_discard_granularity = q->limits.discard_granularity; + + remainder = disk_conf->rs_discard_granularity % q->limits.discard_granularity; + disk_conf->rs_discard_granularity += remainder; + + if (disk_conf->rs_discard_granularity > q->limits.max_discard_sectors << 9) + disk_conf->rs_discard_granularity = q->limits.max_discard_sectors << 9; + + if (disk_conf->rs_discard_granularity != orig_value) + drbd_info(device, "rs_discard_granularity changed to %d\n", + disk_conf->rs_discard_granularity); + } } int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info) @@ -1403,7 +1429,7 @@ int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info) if (!expect(new_disk_conf->resync_rate >= 1)) new_disk_conf->resync_rate = 1; - sanitize_disk_conf(new_disk_conf, device->ldev); + sanitize_disk_conf(device, new_disk_conf, device->ldev); if (new_disk_conf->c_plan_ahead > DRBD_C_PLAN_AHEAD_MAX) new_disk_conf->c_plan_ahead = DRBD_C_PLAN_AHEAD_MAX; @@ -1698,7 +1724,7 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info) if (retcode != NO_ERROR) goto fail; - sanitize_disk_conf(new_disk_conf, nbc); + sanitize_disk_conf(device, new_disk_conf, nbc); if (drbd_get_max_capacity(nbc) < new_disk_conf->disk_size) { drbd_err(device, "max capacity %llu smaller than disk size %llu\n", diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 2d0e5ad5de9d..ab649d8e9ed2 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -123,14 +123,14 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __u32_field_def(13, DRBD_GENLA_F_MANDATORY, c_fill_target, DRBD_C_FILL_TARGET_DEF) __u32_field_def(14, DRBD_GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF) __u32_field_def(15, DRBD_GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF) + __u32_field_def(20, DRBD_GENLA_F_MANDATORY, disk_timeout, DRBD_DISK_TIMEOUT_DEF) + __u32_field_def(21, 0 /* OPTIONAL */, read_balancing, DRBD_READ_BALANCING_DEF) + __u32_field_def(25, 0 /* OPTIONAL */, rs_discard_granularity, DRBD_RS_DISCARD_GRANULARITY_DEF) __flg_field_def(16, DRBD_GENLA_F_MANDATORY, disk_barrier, DRBD_DISK_BARRIER_DEF) __flg_field_def(17, DRBD_GENLA_F_MANDATORY, disk_flushes, DRBD_DISK_FLUSHES_DEF) __flg_field_def(18, DRBD_GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF) __flg_field_def(19, DRBD_GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) - __u32_field_def(20, DRBD_GENLA_F_MANDATORY, disk_timeout, DRBD_DISK_TIMEOUT_DEF) - __u32_field_def(21, 0 /* OPTIONAL */, read_balancing, DRBD_READ_BALANCING_DEF) - /* 9: __u32_field_def(22, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) */ __flg_field_def(23, 0 /* OPTIONAL */, al_updates, DRBD_AL_UPDATES_DEF) ) diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 8ac8c5d9a3ad..2e4aad8d8ae8 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -230,4 +230,10 @@ #define DRBD_SOCKET_CHECK_TIMEO_MAX DRBD_PING_TIMEO_MAX #define DRBD_SOCKET_CHECK_TIMEO_DEF 0 #define DRBD_SOCKET_CHECK_TIMEO_SCALE '1' + +#define DRBD_RS_DISCARD_GRANULARITY_MIN 0 +#define DRBD_RS_DISCARD_GRANULARITY_MAX (1<<20) /* 1MiByte */ +#define DRBD_RS_DISCARD_GRANULARITY_DEF 0 /* disabled by default */ +#define DRBD_RS_DISCARD_GRANULARITY_SCALE '1' /* bytes */ + #endif |