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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-16 19:36:39 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-16 19:36:39 (GMT)
commit11efae3506d882a8782bc89493a32e467defd6b9 (patch)
tree4671e72e14bb5f03e484ade6526ccfd1a40f75b8
parent465c209db83e2cdaeb4a52f4e107a9fc636704db (diff)
parentf6d85f04e29859dd3ea65395c05925da352dae89 (diff)
Merge tag 'for-5.1/block-post-20190315' of git://git.kernel.dk/linux-block
Pull more block layer changes from Jens Axboe: "This is a collection of both stragglers, and fixes that came in after I finalized the initial pull. This contains: - An MD pull request from Song, with a few minor fixes - Set of NVMe patches via Christoph - Pull request from Konrad, with a few fixes for xen/blkback - pblk fix IO calculation fix (Javier) - Segment calculation fix for pass-through (Ming) - Fallthrough annotation for blkcg (Mathieu)" * tag 'for-5.1/block-post-20190315' of git://git.kernel.dk/linux-block: (25 commits) blkcg: annotate implicit fall through nvme-tcp: support C2HData with SUCCESS flag nvmet: ignore EOPNOTSUPP for discard nvme: add proper write zeroes setup for the multipath device nvme: add proper discard setup for the multipath device nvme: remove nvme_ns_config_oncs nvme: disable Write Zeroes for qemu controllers nvmet-fc: bring Disconnect into compliance with FC-NVME spec nvmet-fc: fix issues with targetport assoc_list list walking nvme-fc: reject reconnect if io queue count is reduced to zero nvme-fc: fix numa_node when dev is null nvme-fc: use nr_phys_segments to determine existence of sgl nvme-loop: init nvmet_ctrl fatal_err_work when allocate nvme: update comment to make the code easier to read nvme: put ns_head ref if namespace fails allocation nvme-trace: fix cdw10 buffer overrun nvme: don't warn on block content change effects nvme: add get-feature to admin cmds tracer md: Fix failed allocation of md_register_thread It's wrong to add len to sector_nr in raid10 reshape twice ...
-rw-r--r--Documentation/admin-guide/md.rst3
-rw-r--r--block/blk-merge.c15
-rw-r--r--drivers/block/xen-blkback/xenbus.c99
-rw-r--r--drivers/lightnvm/pblk-rl.c7
-rw-r--r--drivers/md/raid10.c3
-rw-r--r--drivers/md/raid5-log.h1
-rw-r--r--drivers/md/raid5-ppl.c63
-rw-r--r--drivers/md/raid5.c3
-rw-r--r--drivers/nvme/host/core.c28
-rw-r--r--drivers/nvme/host/fc.c36
-rw-r--r--drivers/nvme/host/nvme.h5
-rw-r--r--drivers/nvme/host/pci.c3
-rw-r--r--drivers/nvme/host/tcp.c32
-rw-r--r--drivers/nvme/host/trace.c14
-rw-r--r--drivers/nvme/host/trace.h2
-rw-r--r--drivers/nvme/target/core.c20
-rw-r--r--drivers/nvme/target/fc.c42
-rw-r--r--drivers/nvme/target/io-cmd-bdev.c8
-rw-r--r--drivers/nvme/target/io-cmd-file.c2
-rw-r--r--kernel/trace/blktrace.c1
20 files changed, 259 insertions, 128 deletions
diff --git a/Documentation/admin-guide/md.rst b/Documentation/admin-guide/md.rst
index 84de718..3c51084 100644
--- a/Documentation/admin-guide/md.rst
+++ b/Documentation/admin-guide/md.rst
@@ -756,3 +756,6 @@ These currently include:
The cache mode for raid5. raid5 could include an extra disk for
caching. The mode can be "write-throuth" and "write-back". The
default is "write-through".
+
+ ppl_write_hint
+ NVMe stream ID to be set for each PPL write request.
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 22467f4..1c9d4f0 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -180,7 +180,7 @@ static unsigned get_max_segment_size(struct request_queue *q,
*/
static bool bvec_split_segs(struct request_queue *q, struct bio_vec *bv,
unsigned *nsegs, unsigned *last_seg_size,
- unsigned *front_seg_size, unsigned *sectors)
+ unsigned *front_seg_size, unsigned *sectors, unsigned max_segs)
{
unsigned len = bv->bv_len;
unsigned total_len = 0;
@@ -190,7 +190,7 @@ static bool bvec_split_segs(struct request_queue *q, struct bio_vec *bv,
* Multi-page bvec may be too big to hold in one segment, so the
* current bvec has to be splitted as multiple segments.
*/
- while (len && new_nsegs + *nsegs < queue_max_segments(q)) {
+ while (len && new_nsegs + *nsegs < max_segs) {
seg_size = get_max_segment_size(q, bv->bv_offset + total_len);
seg_size = min(seg_size, len);
@@ -240,6 +240,7 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
bool do_split = true;
struct bio *new = NULL;
const unsigned max_sectors = get_max_io_size(q, bio);
+ const unsigned max_segs = queue_max_segments(q);
bio_for_each_bvec(bv, bio, iter) {
/*
@@ -254,14 +255,14 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
* Consider this a new segment if we're splitting in
* the middle of this vector.
*/
- if (nsegs < queue_max_segments(q) &&
+ if (nsegs < max_segs &&
sectors < max_sectors) {
/* split in the middle of bvec */
bv.bv_len = (max_sectors - sectors) << 9;
bvec_split_segs(q, &bv, &nsegs,
&seg_size,
&front_seg_size,
- &sectors);
+ &sectors, max_segs);
}
goto split;
}
@@ -283,7 +284,7 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
continue;
}
new_segment:
- if (nsegs == queue_max_segments(q))
+ if (nsegs == max_segs)
goto split;
bvprv = bv;
@@ -296,7 +297,7 @@ new_segment:
if (nsegs == 1 && seg_size > front_seg_size)
front_seg_size = seg_size;
} else if (bvec_split_segs(q, &bv, &nsegs, &seg_size,
- &front_seg_size, &sectors)) {
+ &front_seg_size, &sectors, max_segs)) {
goto split;
}
}
@@ -415,7 +416,7 @@ new_segment:
bvprv = bv;
prev = 1;
bvec_split_segs(q, &bv, &nr_phys_segs, &seg_size,
- &front_seg_size, NULL);
+ &front_seg_size, NULL, UINT_MAX);
}
bbio = bio;
}
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index a4bc74e..24896ff 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -926,7 +926,7 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
int err, i, j;
struct xen_blkif *blkif = ring->blkif;
struct xenbus_device *dev = blkif->be->dev;
- unsigned int ring_page_order, nr_grefs, evtchn;
+ unsigned int nr_grefs, evtchn;
err = xenbus_scanf(XBT_NIL, dir, "event-channel", "%u",
&evtchn);
@@ -936,43 +936,42 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
return err;
}
- err = xenbus_scanf(XBT_NIL, dev->otherend, "ring-page-order", "%u",
- &ring_page_order);
- if (err != 1) {
- err = xenbus_scanf(XBT_NIL, dir, "ring-ref", "%u", &ring_ref[0]);
+ nr_grefs = blkif->nr_ring_pages;
+
+ if (unlikely(!nr_grefs)) {
+ WARN_ON(true);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < nr_grefs; i++) {
+ char ring_ref_name[RINGREF_NAME_LEN];
+
+ snprintf(ring_ref_name, RINGREF_NAME_LEN, "ring-ref%u", i);
+ err = xenbus_scanf(XBT_NIL, dir, ring_ref_name,
+ "%u", &ring_ref[i]);
+
if (err != 1) {
+ if (nr_grefs == 1)
+ break;
+
err = -EINVAL;
- xenbus_dev_fatal(dev, err, "reading %s/ring-ref", dir);
+ xenbus_dev_fatal(dev, err, "reading %s/%s",
+ dir, ring_ref_name);
return err;
}
- nr_grefs = 1;
- } else {
- unsigned int i;
+ }
- if (ring_page_order > xen_blkif_max_ring_order) {
+ if (err != 1) {
+ WARN_ON(nr_grefs != 1);
+
+ err = xenbus_scanf(XBT_NIL, dir, "ring-ref", "%u",
+ &ring_ref[0]);
+ if (err != 1) {
err = -EINVAL;
- xenbus_dev_fatal(dev, err, "%s/request %d ring page order exceed max:%d",
- dir, ring_page_order,
- xen_blkif_max_ring_order);
+ xenbus_dev_fatal(dev, err, "reading %s/ring-ref", dir);
return err;
}
-
- nr_grefs = 1 << ring_page_order;
- for (i = 0; i < nr_grefs; i++) {
- char ring_ref_name[RINGREF_NAME_LEN];
-
- snprintf(ring_ref_name, RINGREF_NAME_LEN, "ring-ref%u", i);
- err = xenbus_scanf(XBT_NIL, dir, ring_ref_name,
- "%u", &ring_ref[i]);
- if (err != 1) {
- err = -EINVAL;
- xenbus_dev_fatal(dev, err, "reading %s/%s",
- dir, ring_ref_name);
- return err;
- }
- }
}
- blkif->nr_ring_pages = nr_grefs;
for (i = 0; i < nr_grefs * XEN_BLKIF_REQS_PER_PAGE; i++) {
req = kzalloc(sizeof(*req), GFP_KERNEL);
@@ -1023,6 +1022,7 @@ fail:
static int connect_ring(struct backend_info *be)
{
struct xenbus_device *dev = be->dev;
+ struct xen_blkif *blkif = be->blkif;
unsigned int pers_grants;
char protocol[64] = "";
int err, i;
@@ -1030,28 +1030,29 @@ static int connect_ring(struct backend_info *be)
size_t xspathsize;
const size_t xenstore_path_ext_size = 11; /* sufficient for "/queue-NNN" */
unsigned int requested_num_queues = 0;
+ unsigned int ring_page_order;
pr_debug("%s %s\n", __func__, dev->otherend);
- be->blkif->blk_protocol = BLKIF_PROTOCOL_DEFAULT;
+ blkif->blk_protocol = BLKIF_PROTOCOL_DEFAULT;
err = xenbus_scanf(XBT_NIL, dev->otherend, "protocol",
"%63s", protocol);
if (err <= 0)
strcpy(protocol, "unspecified, assuming default");
else if (0 == strcmp(protocol, XEN_IO_PROTO_ABI_NATIVE))
- be->blkif->blk_protocol = BLKIF_PROTOCOL_NATIVE;
+ blkif->blk_protocol = BLKIF_PROTOCOL_NATIVE;
else if (0 == strcmp(protocol, XEN_IO_PROTO_ABI_X86_32))
- be->blkif->blk_protocol = BLKIF_PROTOCOL_X86_32;
+ blkif->blk_protocol = BLKIF_PROTOCOL_X86_32;
else if (0 == strcmp(protocol, XEN_IO_PROTO_ABI_X86_64))
- be->blkif->blk_protocol = BLKIF_PROTOCOL_X86_64;
+ blkif->blk_protocol = BLKIF_PROTOCOL_X86_64;
else {
xenbus_dev_fatal(dev, err, "unknown fe protocol %s", protocol);
return -ENOSYS;
}
pers_grants = xenbus_read_unsigned(dev->otherend, "feature-persistent",
0);
- be->blkif->vbd.feature_gnt_persistent = pers_grants;
- be->blkif->vbd.overflow_max_grants = 0;
+ blkif->vbd.feature_gnt_persistent = pers_grants;
+ blkif->vbd.overflow_max_grants = 0;
/*
* Read the number of hardware queues from frontend.
@@ -1067,16 +1068,30 @@ static int connect_ring(struct backend_info *be)
requested_num_queues, xenblk_max_queues);
return -ENOSYS;
}
- be->blkif->nr_rings = requested_num_queues;
- if (xen_blkif_alloc_rings(be->blkif))
+ blkif->nr_rings = requested_num_queues;
+ if (xen_blkif_alloc_rings(blkif))
return -ENOMEM;
pr_info("%s: using %d queues, protocol %d (%s) %s\n", dev->nodename,
- be->blkif->nr_rings, be->blkif->blk_protocol, protocol,
+ blkif->nr_rings, blkif->blk_protocol, protocol,
pers_grants ? "persistent grants" : "");
- if (be->blkif->nr_rings == 1)
- return read_per_ring_refs(&be->blkif->rings[0], dev->otherend);
+ ring_page_order = xenbus_read_unsigned(dev->otherend,
+ "ring-page-order", 0);
+
+ if (ring_page_order > xen_blkif_max_ring_order) {
+ err = -EINVAL;
+ xenbus_dev_fatal(dev, err,
+ "requested ring page order %d exceed max:%d",
+ ring_page_order,
+ xen_blkif_max_ring_order);
+ return err;
+ }
+
+ blkif->nr_ring_pages = 1 << ring_page_order;
+
+ if (blkif->nr_rings == 1)
+ return read_per_ring_refs(&blkif->rings[0], dev->otherend);
else {
xspathsize = strlen(dev->otherend) + xenstore_path_ext_size;
xspath = kmalloc(xspathsize, GFP_KERNEL);
@@ -1085,10 +1100,10 @@ static int connect_ring(struct backend_info *be)
return -ENOMEM;
}
- for (i = 0; i < be->blkif->nr_rings; i++) {
+ for (i = 0; i < blkif->nr_rings; i++) {
memset(xspath, 0, xspathsize);
snprintf(xspath, xspathsize, "%s/queue-%u", dev->otherend, i);
- err = read_per_ring_refs(&be->blkif->rings[i], xspath);
+ err = read_per_ring_refs(&blkif->rings[i], xspath);
if (err) {
kfree(xspath);
return err;
diff --git a/drivers/lightnvm/pblk-rl.c b/drivers/lightnvm/pblk-rl.c
index b014957..a5f8bc2 100644
--- a/drivers/lightnvm/pblk-rl.c
+++ b/drivers/lightnvm/pblk-rl.c
@@ -233,10 +233,15 @@ void pblk_rl_init(struct pblk_rl *rl, int budget, int threshold)
/* To start with, all buffer is available to user I/O writers */
rl->rb_budget = budget;
rl->rb_user_max = budget;
- rl->rb_max_io = threshold ? (budget - threshold) : (budget - 1);
rl->rb_gc_max = 0;
rl->rb_state = PBLK_RL_HIGH;
+ /* Maximize I/O size and ansure that back threshold is respected */
+ if (threshold)
+ rl->rb_max_io = budget - pblk->min_write_pgs_data - threshold;
+ else
+ rl->rb_max_io = budget - pblk->min_write_pgs_data - 1;
+
atomic_set(&rl->rb_user_cnt, 0);
atomic_set(&rl->rb_gc_cnt, 0);
atomic_set(&rl->rb_space, -1);
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index abb5d38..3b6880d 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3939,6 +3939,8 @@ static int raid10_run(struct mddev *mddev)
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync, mddev,
"reshape");
+ if (!mddev->sync_thread)
+ goto out_free_conf;
}
return 0;
@@ -4670,7 +4672,6 @@ read_more:
atomic_inc(&r10_bio->remaining);
read_bio->bi_next = NULL;
generic_make_request(read_bio);
- sector_nr += nr_sectors;
sectors_done += nr_sectors;
if (sector_nr <= last)
goto read_more;
diff --git a/drivers/md/raid5-log.h b/drivers/md/raid5-log.h
index bfb8114..43c714a 100644
--- a/drivers/md/raid5-log.h
+++ b/drivers/md/raid5-log.h
@@ -45,6 +45,7 @@ extern void ppl_stripe_write_finished(struct stripe_head *sh);
extern int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add);
extern void ppl_quiesce(struct r5conf *conf, int quiesce);
extern int ppl_handle_flush_request(struct r5l_log *log, struct bio *bio);
+extern struct md_sysfs_entry ppl_write_hint;
static inline bool raid5_has_log(struct r5conf *conf)
{
diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c
index 0b096dd..17e9e7d 100644
--- a/drivers/md/raid5-ppl.c
+++ b/drivers/md/raid5-ppl.c
@@ -20,6 +20,7 @@
#include <linux/raid/md_p.h>
#include "md.h"
#include "raid5.h"
+#include "raid5-log.h"
/*
* PPL consists of a 4KB header (struct ppl_header) and at least 128KB for
@@ -115,6 +116,8 @@ struct ppl_conf {
/* stripes to retry if failed to allocate io_unit */
struct list_head no_mem_stripes;
spinlock_t no_mem_stripes_lock;
+
+ unsigned short write_hint;
};
struct ppl_log {
@@ -474,6 +477,7 @@ static void ppl_submit_iounit(struct ppl_io_unit *io)
bio_set_dev(bio, log->rdev->bdev);
bio->bi_iter.bi_sector = log->next_io_sector;
bio_add_page(bio, io->header_page, PAGE_SIZE, 0);
+ bio->bi_write_hint = ppl_conf->write_hint;
pr_debug("%s: log->current_io_sector: %llu\n", __func__,
(unsigned long long)log->next_io_sector);
@@ -503,6 +507,7 @@ static void ppl_submit_iounit(struct ppl_io_unit *io)
bio = bio_alloc_bioset(GFP_NOIO, BIO_MAX_PAGES,
&ppl_conf->bs);
bio->bi_opf = prev->bi_opf;
+ bio->bi_write_hint = prev->bi_write_hint;
bio_copy_dev(bio, prev);
bio->bi_iter.bi_sector = bio_end_sector(prev);
bio_add_page(bio, sh->ppl_page, PAGE_SIZE, 0);
@@ -1407,6 +1412,7 @@ int ppl_init_log(struct r5conf *conf)
atomic64_set(&ppl_conf->seq, 0);
INIT_LIST_HEAD(&ppl_conf->no_mem_stripes);
spin_lock_init(&ppl_conf->no_mem_stripes_lock);
+ ppl_conf->write_hint = RWF_WRITE_LIFE_NOT_SET;
if (!mddev->external) {
ppl_conf->signature = ~crc32c_le(~0, mddev->uuid, sizeof(mddev->uuid));
@@ -1501,3 +1507,60 @@ int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add)
return ret;
}
+
+static ssize_t
+ppl_write_hint_show(struct mddev *mddev, char *buf)
+{
+ size_t ret = 0;
+ struct r5conf *conf;
+ struct ppl_conf *ppl_conf = NULL;
+
+ spin_lock(&mddev->lock);
+ conf = mddev->private;
+ if (conf && raid5_has_ppl(conf))
+ ppl_conf = conf->log_private;
+ ret = sprintf(buf, "%d\n", ppl_conf ? ppl_conf->write_hint : 0);
+ spin_unlock(&mddev->lock);
+
+ return ret;
+}
+
+static ssize_t
+ppl_write_hint_store(struct mddev *mddev, const char *page, size_t len)
+{
+ struct r5conf *conf;
+ struct ppl_conf *ppl_conf;
+ int err = 0;
+ unsigned short new;
+
+ if (len >= PAGE_SIZE)
+ return -EINVAL;
+ if (kstrtou16(page, 10, &new))
+ return -EINVAL;
+
+ err = mddev_lock(mddev);
+ if (err)
+ return err;
+
+ conf = mddev->private;
+ if (!conf) {
+ err = -ENODEV;
+ } else if (raid5_has_ppl(conf)) {
+ ppl_conf = conf->log_private;
+ if (!ppl_conf)
+ err = -EINVAL;
+ else
+ ppl_conf->write_hint = new;
+ } else {
+ err = -EINVAL;
+ }
+
+ mddev_unlock(mddev);
+
+ return err ?: len;
+}
+
+struct md_sysfs_entry
+ppl_write_hint = __ATTR(ppl_write_hint, S_IRUGO | S_IWUSR,
+ ppl_write_hint_show,
+ ppl_write_hint_store);
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 77ffd09..c033bfc 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -6650,6 +6650,7 @@ static struct attribute *raid5_attrs[] = {
&raid5_skip_copy.attr,
&raid5_rmw_level.attr,
&r5c_journal_mode.attr,
+ &ppl_write_hint.attr,
NULL,
};
static struct attribute_group raid5_attrs_group = {
@@ -7393,6 +7394,8 @@ static int raid5_run(struct mddev *mddev)
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync, mddev,
"reshape");
+ if (!mddev->sync_thread)
+ goto abort;
}
/* Ok, everything is just fine now */
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 07bf2bf..4706019 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -179,8 +179,8 @@ static int nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl)
int ret = 0;
/*
- * Keep a reference until the work is flushed since ->delete_ctrl
- * can free the controller.
+ * Keep a reference until nvme_do_delete_ctrl() complete,
+ * since ->delete_ctrl can free the controller.
*/
nvme_get_ctrl(ctrl);
if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_DELETING))
@@ -1250,7 +1250,7 @@ static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
if (ns) {
if (ctrl->effects)
effects = le32_to_cpu(ctrl->effects->iocs[opcode]);
- if (effects & ~NVME_CMD_EFFECTS_CSUPP)
+ if (effects & ~(NVME_CMD_EFFECTS_CSUPP | NVME_CMD_EFFECTS_LBCC))
dev_warn(ctrl->device,
"IO command:%02x has unhandled effects:%08x\n",
opcode, effects);
@@ -1495,10 +1495,10 @@ static void nvme_set_chunk_size(struct nvme_ns *ns)
blk_queue_chunk_sectors(ns->queue, rounddown_pow_of_two(chunk_size));
}
-static void nvme_config_discard(struct nvme_ns *ns)
+static void nvme_config_discard(struct gendisk *disk, struct nvme_ns *ns)
{
struct nvme_ctrl *ctrl = ns->ctrl;
- struct request_queue *queue = ns->queue;
+ struct request_queue *queue = disk->queue;
u32 size = queue_logical_block_size(queue);
if (!(ctrl->oncs & NVME_CTRL_ONCS_DSM)) {
@@ -1526,12 +1526,13 @@ static void nvme_config_discard(struct nvme_ns *ns)
blk_queue_max_write_zeroes_sectors(queue, UINT_MAX);
}
-static inline void nvme_config_write_zeroes(struct nvme_ns *ns)
+static void nvme_config_write_zeroes(struct gendisk *disk, struct nvme_ns *ns)
{
u32 max_sectors;
unsigned short bs = 1 << ns->lba_shift;
- if (!(ns->ctrl->oncs & NVME_CTRL_ONCS_WRITE_ZEROES))
+ if (!(ns->ctrl->oncs & NVME_CTRL_ONCS_WRITE_ZEROES) ||
+ (ns->ctrl->quirks & NVME_QUIRK_DISABLE_WRITE_ZEROES))
return;
/*
* Even though NVMe spec explicitly states that MDTS is not
@@ -1548,13 +1549,7 @@ static inline void nvme_config_write_zeroes(struct nvme_ns *ns)
else
max_sectors = ((u32)(ns->ctrl->max_hw_sectors + 1) * bs) >> 9;
- blk_queue_max_write_zeroes_sectors(ns->queue, max_sectors);
-}
-
-static inline void nvme_ns_config_oncs(struct nvme_ns *ns)
-{
- nvme_config_discard(ns);
- nvme_config_write_zeroes(ns);
+ blk_queue_max_write_zeroes_sectors(disk->queue, max_sectors);
}
static void nvme_report_ns_ids(struct nvme_ctrl *ctrl, unsigned int nsid,
@@ -1610,7 +1605,9 @@ static void nvme_update_disk_info(struct gendisk *disk,
capacity = 0;
set_capacity(disk, capacity);
- nvme_ns_config_oncs(ns);
+
+ nvme_config_discard(disk, ns);
+ nvme_config_write_zeroes(disk, ns);
if (id->nsattr & (1 << 0))
set_disk_ro(disk, true);
@@ -3304,6 +3301,7 @@ static int nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
mutex_lock(&ctrl->subsys->lock);
list_del_rcu(&ns->siblings);
mutex_unlock(&ctrl->subsys->lock);
+ nvme_put_ns_head(ns->head);
out_free_id:
kfree(id);
out_free_queue:
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index b29b124..f3b9d91 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2107,7 +2107,7 @@ nvme_fc_map_data(struct nvme_fc_ctrl *ctrl, struct request *rq,
freq->sg_cnt = 0;
- if (!blk_rq_payload_bytes(rq))
+ if (!blk_rq_nr_phys_segments(rq))
return 0;
freq->sg_table.sgl = freq->first_sgl;
@@ -2304,12 +2304,23 @@ nvme_fc_queue_rq(struct blk_mq_hw_ctx *hctx,
if (ret)
return ret;
- data_len = blk_rq_payload_bytes(rq);
- if (data_len)
+ /*
+ * nvme core doesn't quite treat the rq opaquely. Commands such
+ * as WRITE ZEROES will return a non-zero rq payload_bytes yet
+ * there is no actual payload to be transferred.
+ * To get it right, key data transmission on there being 1 or
+ * more physical segments in the sg list. If there is no
+ * physical segments, there is no payload.
+ */
+ if (blk_rq_nr_phys_segments(rq)) {
+ data_len = blk_rq_payload_bytes(rq);
io_dir = ((rq_data_dir(rq) == WRITE) ?
NVMEFC_FCP_WRITE : NVMEFC_FCP_READ);
- else
+ } else {
+ data_len = 0;
io_dir = NVMEFC_FCP_NODATA;
+ }
+
return nvme_fc_start_fcp_op(ctrl, queue, op, data_len, io_dir);
}
@@ -2464,6 +2475,7 @@ static int
nvme_fc_recreate_io_queues(struct nvme_fc_ctrl *ctrl)
{
struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;
+ u32 prior_ioq_cnt = ctrl->ctrl.queue_count - 1;
unsigned int nr_io_queues;
int ret;
@@ -2476,6 +2488,13 @@ nvme_fc_recreate_io_queues(struct nvme_fc_ctrl *ctrl)
return ret;
}
+ if (!nr_io_queues && prior_ioq_cnt) {
+ dev_info(ctrl->ctrl.device,
+ "Fail Reconnect: At least 1 io queue "
+ "required (was %d)\n", prior_ioq_cnt);
+ return -ENOSPC;
+ }
+
ctrl->ctrl.queue_count = nr_io_queues + 1;
/* check for io queues existing */
if (ctrl->ctrl.queue_count == 1)
@@ -2489,6 +2508,10 @@ nvme_fc_recreate_io_queues(struct nvme_fc_ctrl *ctrl)
if (ret)
goto out_delete_hw_queues;
+ if (prior_ioq_cnt != nr_io_queues)
+ dev_info(ctrl->ctrl.device,
+ "reconnect: revising io queue count from %d to %d\n",
+ prior_ioq_cnt, nr_io_queues);
blk_mq_update_nr_hw_queues(&ctrl->tag_set, nr_io_queues);
return 0;
@@ -3006,7 +3029,10 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
ctrl->ctrl.opts = opts;
ctrl->ctrl.nr_reconnects = 0;
- ctrl->ctrl.numa_node = dev_to_node(lport->dev);
+ if (lport->dev)
+ ctrl->ctrl.numa_node = dev_to_node(lport->dev);
+ else
+ ctrl->ctrl.numa_node = NUMA_NO_NODE;
INIT_LIST_HEAD(&ctrl->ctrl_list);
ctrl->lport = lport;
ctrl->rport = rport;
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index b91f183..527d645 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -87,6 +87,11 @@ enum nvme_quirks {
* Ignore device provided subnqn.
*/
NVME_QUIRK_IGNORE_DEV_SUBNQN = (1 << 8),
+
+ /*
+ * Broken Write Zeroes.
+ */
+ NVME_QUIRK_DISABLE_WRITE_ZEROES = (1 << 9),
};
/*
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 92bad1c..a90cf5d 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2937,7 +2937,8 @@ static const struct pci_device_id nvme_id_table[] = {
{ PCI_VDEVICE(INTEL, 0xf1a6), /* Intel 760p/Pro 7600p */
.driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN, },
{ PCI_VDEVICE(INTEL, 0x5845), /* Qemu emulated controller */
- .driver_data = NVME_QUIRK_IDENTIFY_CNS, },
+ .driver_data = NVME_QUIRK_IDENTIFY_CNS |
+ NVME_QUIRK_DISABLE_WRITE_ZEROES, },
{ PCI_DEVICE(0x1bb1, 0x0100), /* Seagate Nytro Flash Storage */
.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },
{ PCI_DEVICE(0x1c58, 0x0003), /* HGST adapter */
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 208ee51..e7e0888 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -463,6 +463,15 @@ static int nvme_tcp_handle_c2h_data(struct nvme_tcp_queue *queue,
queue->data_remaining = le32_to_cpu(pdu->data_length);
+ if (pdu->hdr.flags & NVME_TCP_F_DATA_SUCCESS &&
+ unlikely(!(pdu->hdr.flags & NVME_TCP_F_DATA_LAST))) {
+ dev_err(queue->ctrl->ctrl.device,
+ "queue %d tag %#x SUCCESS set but not last PDU\n",
+ nvme_tcp_queue_id(queue), rq->tag);
+ nvme_tcp_error_recovery(&queue->ctrl->ctrl);
+ return -EPROTO;
+ }
+
return 0;
}
@@ -618,6 +627,14 @@ static int nvme_tcp_recv_pdu(struct nvme_tcp_queue *queue, struct sk_buff *skb,
return ret;
}
+static inline void nvme_tcp_end_request(struct request *rq, __le16 status)
+{
+ union nvme_result res = {};
+
+ nvme_end_request(rq, cpu_to_le16(status << 1), res);
+}
+
+
static int nvme_tcp_recv_data(struct nvme_tcp_queue *queue, struct sk_buff *skb,
unsigned int *offset, size_t *len)
{
@@ -685,6 +702,8 @@ static int nvme_tcp_recv_data(struct nvme_tcp_queue *queue, struct sk_buff *skb,
nvme_tcp_ddgst_final(queue->rcv_hash, &queue->exp_ddgst);
queue->ddgst_remaining = NVME_TCP_DIGEST_LENGTH;
} else {
+ if (pdu->hdr.flags & NVME_TCP_F_DATA_SUCCESS)
+ nvme_tcp_end_request(rq, NVME_SC_SUCCESS);
nvme_tcp_init_recv_ctx(queue);
}
}
@@ -695,6 +714,7 @@ static int nvme_tcp_recv_data(struct nvme_tcp_queue *queue, struct sk_buff *skb,
static int nvme_tcp_recv_ddgst(struct nvme_tcp_queue *queue,
struct sk_buff *skb, unsigned int *offset, size_t *len)
{
+ struct nvme_tcp_data_pdu *pdu = (void *)queue->pdu;
char *ddgst = (char *)&queue->recv_ddgst;
size_t recv_len = min_t(size_t, *len, queue->ddgst_remaining);
off_t off = NVME_TCP_DIGEST_LENGTH - queue->ddgst_remaining;
@@ -718,6 +738,13 @@ static int nvme_tcp_recv_ddgst(struct nvme_tcp_queue *queue,
return -EIO;
}
+ if (pdu->hdr.flags & NVME_TCP_F_DATA_SUCCESS) {
+ struct request *rq = blk_mq_tag_to_rq(nvme_tcp_tagset(queue),
+ pdu->command_id);
+
+ nvme_tcp_end_request(rq, NVME_SC_SUCCESS);
+ }
+
nvme_tcp_init_recv_ctx(queue);
return 0;
}
@@ -815,10 +842,7 @@ static inline void nvme_tcp_done_send_req(struct nvme_tcp_queue *queue)
static void nvme_tcp_fail_request(struct nvme_tcp_request *req)
{
- union nvme_result res = {};
-
- nvme_end_request(blk_mq_rq_from_pdu(req),
- cpu_to_le16(NVME_SC_DATA_XFER_ERROR), res);
+ nvme_tcp_end_request(blk_mq_rq_from_pdu(req), NVME_SC_DATA_XFER_ERROR);
}
static int nvme_tcp_try_send_data(struct nvme_tcp_request *req)
diff --git a/drivers/nvme/host/trace.c b/drivers/nvme/host/trace.c
index 58456de..5f24ea7 100644
--- a/drivers/nvme/host/trace.c
+++ b/drivers/nvme/host/trace.c
@@ -50,7 +50,19 @@ static const char *nvme_trace_admin_identify(struct trace_seq *p, u8 *cdw10)
return ret;
}
+static const char *nvme_trace_admin_get_features(struct trace_seq *p,
+ u8 *cdw10)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ u8 fid = cdw10[0];
+ u8 sel = cdw10[1] & 0x7;
+ u32 cdw11 = get_unaligned_le32(cdw10 + 4);
+
+ trace_seq_printf(p, "fid=0x%x sel=0x%x cdw11=0x%x", fid, sel, cdw11);
+ trace_seq_putc(p, 0);
+ return ret;
+}
static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10)
{
@@ -101,6 +113,8 @@ const char *nvme_trace_parse_admin_cmd(struct trace_seq *p,
return nvme_trace_create_cq(p, cdw10);
case nvme_admin_identify:
return nvme_trace_admin_identify(p, cdw10);
+ case nvme_admin_get_features:
+ return nvme_trace_admin_get_features(p, cdw10);
default:
return nvme_trace_common(p, cdw10);
}
diff --git a/drivers/nvme/host/trace.h b/drivers/nvme/host/trace.h
index 244d7c1..97d3c77 100644
--- a/drivers/nvme/host/trace.h
+++ b/drivers/nvme/host/trace.h
@@ -108,7 +108,7 @@ TRACE_EVENT(nvme_setup_cmd,
__entry->metadata = le64_to_cpu(cmd->common.metadata);
__assign_disk_name(__entry->disk, req->rq_disk);
memcpy(__entry->cdw10, &cmd->common.cdw10,
- 6 * sizeof(__entry->cdw10));
+ sizeof(__entry->cdw10));
),
TP_printk("nvme%d: %sqid=%d, cmdid=%u, nsid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
__entry->ctrl_id, __print_disk_name(__entry->disk),
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index d44ede1..2d73b66 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -1163,6 +1163,15 @@ static void nvmet_release_p2p_ns_map(struct nvmet_ctrl *ctrl)
put_device(ctrl->p2p_client);
}
+static void nvmet_fatal_error_handler(struct work_struct *work)
+{
+ struct nvmet_ctrl *ctrl =
+ container_of(work, struct nvmet_ctrl, fatal_err_work);
+
+ pr_err("ctrl %d fatal error occurred!\n", ctrl->cntlid);
+ ctrl->ops->delete_ctrl(ctrl);
+}
+
u16 nvmet_alloc_ctrl(const char *subsysnqn, const char *hostnqn,
struct nvmet_req *req, u32 kato, struct nvmet_ctrl **ctrlp)
{
@@ -1205,6 +1214,7 @@ u16 nvmet_alloc_ctrl(const char *subsysnqn, const char *hostnqn,
INIT_WORK(&ctrl->async_event_work, nvmet_async_event_work);
INIT_LIST_HEAD(&ctrl->async_events);
INIT_RADIX_TREE(&ctrl->p2p_ns_map, GFP_KERNEL);
+ INIT_WORK(&ctrl->fatal_err_work, nvmet_fatal_error_handler);
memcpy(ctrl->subsysnqn, subsysnqn, NVMF_NQN_SIZE);
memcpy(ctrl->hostnqn, hostnqn, NVMF_NQN_SIZE);
@@ -1308,21 +1318,11 @@ void nvmet_ctrl_put(struct nvmet_ctrl *ctrl)
kref_put(&ctrl->ref, nvmet_ctrl_free);
}
-static void nvmet_fatal_error_handler(struct work_struct *work)
-{
- struct nvmet_ctrl *ctrl =
- container_of(work, struct nvmet_ctrl, fatal_err_work);
-
- pr_err("ctrl %d fatal error occurred!\n", ctrl->cntlid);
- ctrl->ops->delete_ctrl(ctrl);
-}
-
void nvmet_ctrl_fatal_error(struct nvmet_ctrl *ctrl)
{
mutex_lock(&ctrl->lock);
if (!(ctrl->csts & NVME_CSTS_CFS)) {
ctrl->csts |= NVME_CSTS_CFS;
- INIT_WORK(&ctrl->fatal_err_work, nvmet_fatal_error_handler);
schedule_work(&ctrl->fatal_err_work);
}
mutex_unlock(&ctrl->lock);
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index 1e9654f..98b7b1f 100644
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -1143,10 +1143,8 @@ __nvmet_fc_free_assocs(struct nvmet_fc_tgtport *tgtport)
&tgtport->assoc_list, a_list) {
if (!nvmet_fc_tgt_a_get(assoc))
continue;
- spin_unlock_irqrestore(&tgtport->lock, flags);
- nvmet_fc_delete_target_assoc(assoc);
- nvmet_fc_tgt_a_put(assoc);
- spin_lock_irqsave(&tgtport->lock, flags);
+ if (!schedule_work(&assoc->del_work))
+ nvmet_fc_tgt_a_put(assoc);
}
spin_unlock_irqrestore(&tgtport->lock, flags);
}
@@ -1185,7 +1183,8 @@ nvmet_fc_delete_ctrl(struct nvmet_ctrl *ctrl)
nvmet_fc_tgtport_put(tgtport);
if (found_ctrl) {
- schedule_work(&assoc->del_work);
+ if (!schedule_work(&assoc->del_work))
+ nvmet_fc_tgt_a_put(assoc);
return;
}
@@ -1503,10 +1502,8 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
(struct fcnvme_ls_disconnect_rqst *)iod->rqstbuf;
struct fcnvme_ls_disconnect_acc *acc =
(struct fcnvme_ls_disconnect_acc *)iod->rspbuf;
- struct nvmet_fc_tgt_queue *queue = NULL;
struct nvmet_fc_tgt_assoc *assoc;
int ret = 0;
- bool del_assoc = false;
memset(acc, 0, sizeof(*acc));
@@ -1537,18 +1534,7 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
assoc = nvmet_fc_find_target_assoc(tgtport,
be64_to_cpu(rqst->associd.association_id));
iod->assoc = assoc;
- if (assoc) {
- if (rqst->discon_cmd.scope ==
- FCNVME_DISCONN_CONNECTION) {
- queue = nvmet_fc_find_target_queue(tgtport,
- be64_to_cpu(
- rqst->discon_cmd.id));
- if (!queue) {
- nvmet_fc_tgt_a_put(assoc);
- ret = VERR_NO_CONN;
- }
- }
- } else
+ if (!assoc)
ret = VERR_NO_ASSOC;
}
@@ -1576,26 +1562,10 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
sizeof(struct fcnvme_ls_disconnect_acc)),
FCNVME_LS_DISCONNECT);
-
- /* are we to delete a Connection ID (queue) */
- if (queue) {
- int qid = queue->qid;
-
- nvmet_fc_delete_target_queue(queue);
-
- /* release the get taken by find_target_queue */
- nvmet_fc_tgt_q_put(queue);
-
- /* tear association down if io queue terminated */
- if (!qid)
- del_assoc = true;
- }
-
/* release get taken in nvmet_fc_find_target_assoc */
nvmet_fc_tgt_a_put(iod->assoc);
- if (del_assoc)
- nvmet_fc_delete_target_assoc(iod->assoc);
+ nvmet_fc_delete_target_assoc(iod->assoc);
}
diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c
index 71dfedb..a065dbf 100644
--- a/drivers/nvme/target/io-cmd-bdev.c
+++ b/drivers/nvme/target/io-cmd-bdev.c
@@ -194,11 +194,11 @@ static u16 nvmet_bdev_discard_range(struct nvmet_req *req,
le64_to_cpu(range->slba) << (ns->blksize_shift - 9),
le32_to_cpu(range->nlb) << (ns->blksize_shift - 9),
GFP_KERNEL, 0, bio);
-
- if (ret)
+ if (ret && ret != -EOPNOTSUPP) {
req->error_slba = le64_to_cpu(range->slba);
-
- return blk_to_nvme_status(req, errno_to_blk_status(ret));
+ return blk_to_nvme_status(req, errno_to_blk_status(ret));
+ }
+ return NVME_SC_SUCCESS;
}
static void nvmet_bdev_execute_discard(struct nvmet_req *req)
diff --git a/drivers/nvme/target/io-cmd-file.c b/drivers/nvme/target/io-cmd-file.c
index 5175223..3e43212 100644
--- a/drivers/nvme/target/io-cmd-file.c
+++ b/drivers/nvme/target/io-cmd-file.c
@@ -297,7 +297,7 @@ static void nvmet_file_execute_discard(struct nvmet_req *req)
}
ret = vfs_fallocate(req->ns->file, mode, offset, len);
- if (ret) {
+ if (ret && ret != -EOPNOTSUPP) {
req->error_slba = le64_to_cpu(range.slba);
status = errno_to_nvme_status(req, ret);
break;
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index fac0ddf..e1c6d79 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -723,6 +723,7 @@ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg)
#endif
case BLKTRACESTART:
start = 1;
+ /* fall through */
case BLKTRACESTOP:
ret = __blk_trace_startstop(q, start);
break;

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