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authorLinus Torvalds <torvalds@linux-foundation.org>2019-11-25 11:53:26 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-11-25 11:53:26 -0800
commiteeee2827ae75ca58a6965e1b6d208576a5a01920 (patch)
tree9d5f6301a3db7d11c9dee0188bfbe5168c7b185d
parent7e5192b93c3b8661791f65f0d477d0da234ca202 (diff)
parentf612b2132db529feac4f965f28a1b9258ea7c22b (diff)
Merge tag 'for-5.5/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer: - Fix DM core to disallow stacking request-based DM on partitions. - Fix DM raid target to properly resync raidset even if bitmap needed additional pages. - Fix DM crypt performance regression due to use of WQ_HIGHPRI for the IO and crypt workqueues. - Fix DM integrity metadata layout that was aligned on 128K boundary rather than the intended 4K boundary (removes 124K of wasted space for each metadata block). - Improve the DM thin, cache and clone targets to use spin_lock_irq rather than spin_lock_irqsave where possible. - Fix DM thin single thread performance that was lost due to needless workqueue wakeups. - Fix DM zoned target performance that was lost due to excessive backing device checks. - Add ability to trigger write failure with the DM dust test target. - Fix whitespace indentation in drivers/md/Kconfig. - Various smalls fixes and cleanups (e.g. use struct_size, fix uninitialized variable, variable renames, etc). * tag 'for-5.5/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (22 commits) Revert "dm crypt: use WQ_HIGHPRI for the IO and crypt workqueues" dm: Fix Kconfig indentation dm thin: wakeup worker only when deferred bios exist dm integrity: fix excessive alignment of metadata runs dm raid: Remove unnecessary negation of a shift in raid10_format_to_md_layout dm zoned: reduce overhead of backing device checks dm dust: add limited write failure mode dm dust: change ret to r in dust_map_read and dust_map dm dust: change result vars to r dm cache: replace spin_lock_irqsave with spin_lock_irq dm bio prison: replace spin_lock_irqsave with spin_lock_irq dm thin: replace spin_lock_irqsave with spin_lock_irq dm clone: add bucket_lock_irq/bucket_unlock_irq helpers dm clone: replace spin_lock_irqsave with spin_lock_irq dm writecache: handle REQ_FUA dm writecache: fix uninitialized variable warning dm stripe: use struct_size() in kmalloc() dm raid: streamline rs_get_progress() and its raid_status() caller side dm raid: simplify rs_setup_recovery call chain dm raid: to ensure resynchronization, perform raid set grow in preresume ...
-rw-r--r--Documentation/admin-guide/device-mapper/dm-integrity.rst5
-rw-r--r--Documentation/admin-guide/device-mapper/dm-raid.rst2
-rw-r--r--drivers/md/Kconfig54
-rw-r--r--drivers/md/dm-bio-prison-v1.c27
-rw-r--r--drivers/md/dm-bio-prison-v2.c26
-rw-r--r--drivers/md/dm-cache-target.c77
-rw-r--r--drivers/md/dm-clone-metadata.c29
-rw-r--r--drivers/md/dm-clone-metadata.h4
-rw-r--r--drivers/md/dm-clone-target.c62
-rw-r--r--drivers/md/dm-crypt.c9
-rw-r--r--drivers/md/dm-dust.c97
-rw-r--r--drivers/md/dm-integrity.c28
-rw-r--r--drivers/md/dm-raid.c164
-rw-r--r--drivers/md/dm-stripe.c15
-rw-r--r--drivers/md/dm-table.c27
-rw-r--r--drivers/md/dm-thin.c118
-rw-r--r--drivers/md/dm-writecache.c5
-rw-r--r--drivers/md/dm-zoned-metadata.c29
-rw-r--r--drivers/md/dm-zoned-reclaim.c8
-rw-r--r--drivers/md/dm-zoned-target.c54
-rw-r--r--drivers/md/dm-zoned.h2
-rw-r--r--include/linux/device-mapper.h3
22 files changed, 433 insertions, 412 deletions
diff --git a/Documentation/admin-guide/device-mapper/dm-integrity.rst b/Documentation/admin-guide/device-mapper/dm-integrity.rst
index a30aa91b5fbe..594095b54b29 100644
--- a/Documentation/admin-guide/device-mapper/dm-integrity.rst
+++ b/Documentation/admin-guide/device-mapper/dm-integrity.rst
@@ -177,6 +177,11 @@ bitmap_flush_interval:number
The bitmap flush interval in milliseconds. The metadata buffers
are synchronized when this interval expires.
+fix_padding
+ Use a smaller padding of the tag area that is more
+ space-efficient. If this option is not present, large padding is
+ used - that is for compatibility with older kernels.
+
The journal mode (D/J), buffer_sectors, journal_watermark, commit_time can
be changed when reloading the target (load an inactive table and swap the
diff --git a/Documentation/admin-guide/device-mapper/dm-raid.rst b/Documentation/admin-guide/device-mapper/dm-raid.rst
index 2fe255b130fb..f6344675e395 100644
--- a/Documentation/admin-guide/device-mapper/dm-raid.rst
+++ b/Documentation/admin-guide/device-mapper/dm-raid.rst
@@ -417,3 +417,5 @@ Version History
deadlock/potential data corruption. Update superblock when
specific devices are requested via rebuild. Fix RAID leg
rebuild errors.
+ 1.15.0 Fix size extensions not being synchronized in case of new MD bitmap
+ pages allocated; also fix those not occuring after previous reductions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index aa98953f4462..d6d5ab23c088 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -38,9 +38,9 @@ config MD_AUTODETECT
default y
---help---
If you say Y here, then the kernel will try to autodetect raid
- arrays as part of its boot process.
+ arrays as part of its boot process.
- If you don't use raid and say Y, this autodetection can cause
+ If you don't use raid and say Y, this autodetection can cause
a several-second delay in the boot time due to various
synchronisation steps that are part of this step.
@@ -290,7 +290,7 @@ config DM_SNAPSHOT
depends on BLK_DEV_DM
select DM_BUFIO
---help---
- Allow volume managers to take writable snapshots of a device.
+ Allow volume managers to take writable snapshots of a device.
config DM_THIN_PROVISIONING
tristate "Thin provisioning target"
@@ -298,7 +298,7 @@ config DM_THIN_PROVISIONING
select DM_PERSISTENT_DATA
select DM_BIO_PRISON
---help---
- Provides thin provisioning and snapshots that share a data store.
+ Provides thin provisioning and snapshots that share a data store.
config DM_CACHE
tristate "Cache target (EXPERIMENTAL)"
@@ -307,23 +307,23 @@ config DM_CACHE
select DM_PERSISTENT_DATA
select DM_BIO_PRISON
---help---
- dm-cache attempts to improve performance of a block device by
- moving frequently used data to a smaller, higher performance
- device. Different 'policy' plugins can be used to change the
- algorithms used to select which blocks are promoted, demoted,
- cleaned etc. It supports writeback and writethrough modes.
+ dm-cache attempts to improve performance of a block device by
+ moving frequently used data to a smaller, higher performance
+ device. Different 'policy' plugins can be used to change the
+ algorithms used to select which blocks are promoted, demoted,
+ cleaned etc. It supports writeback and writethrough modes.
config DM_CACHE_SMQ
tristate "Stochastic MQ Cache Policy (EXPERIMENTAL)"
depends on DM_CACHE
default y
---help---
- A cache policy that uses a multiqueue ordered by recent hits
- to select which blocks should be promoted and demoted.
- This is meant to be a general purpose policy. It prioritises
- reads over writes. This SMQ policy (vs MQ) offers the promise
- of less memory utilization, improved performance and increased
- adaptability in the face of changing workloads.
+ A cache policy that uses a multiqueue ordered by recent hits
+ to select which blocks should be promoted and demoted.
+ This is meant to be a general purpose policy. It prioritises
+ reads over writes. This SMQ policy (vs MQ) offers the promise
+ of less memory utilization, improved performance and increased
+ adaptability in the face of changing workloads.
config DM_WRITECACHE
tristate "Writecache target"
@@ -343,9 +343,9 @@ config DM_ERA
select DM_PERSISTENT_DATA
select DM_BIO_PRISON
---help---
- dm-era tracks which parts of a block device are written to
- over time. Useful for maintaining cache coherency when using
- vendor snapshots.
+ dm-era tracks which parts of a block device are written to
+ over time. Useful for maintaining cache coherency when using
+ vendor snapshots.
config DM_CLONE
tristate "Clone target (EXPERIMENTAL)"
@@ -353,20 +353,20 @@ config DM_CLONE
default n
select DM_PERSISTENT_DATA
---help---
- dm-clone produces a one-to-one copy of an existing, read-only source
- device into a writable destination device. The cloned device is
- visible/mountable immediately and the copy of the source device to the
- destination device happens in the background, in parallel with user
- I/O.
+ dm-clone produces a one-to-one copy of an existing, read-only source
+ device into a writable destination device. The cloned device is
+ visible/mountable immediately and the copy of the source device to the
+ destination device happens in the background, in parallel with user
+ I/O.
- If unsure, say N.
+ If unsure, say N.
config DM_MIRROR
tristate "Mirror target"
depends on BLK_DEV_DM
---help---
- Allow volume managers to mirror logical volumes, also
- needed for live data migration tools such as 'pvmove'.
+ Allow volume managers to mirror logical volumes, also
+ needed for live data migration tools such as 'pvmove'.
config DM_LOG_USERSPACE
tristate "Mirror userspace logging"
@@ -483,7 +483,7 @@ config DM_FLAKEY
tristate "Flakey target"
depends on BLK_DEV_DM
---help---
- A target that intermittently fails I/O for debugging purposes.
+ A target that intermittently fails I/O for debugging purposes.
config DM_VERITY
tristate "Verity target support"
diff --git a/drivers/md/dm-bio-prison-v1.c b/drivers/md/dm-bio-prison-v1.c
index b5389890bbc3..1f8f98efd97a 100644
--- a/drivers/md/dm-bio-prison-v1.c
+++ b/drivers/md/dm-bio-prison-v1.c
@@ -150,11 +150,10 @@ static int bio_detain(struct dm_bio_prison *prison,
struct dm_bio_prison_cell **cell_result)
{
int r;
- unsigned long flags;
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
r = __bio_detain(prison, key, inmate, cell_prealloc, cell_result);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
return r;
}
@@ -198,11 +197,9 @@ void dm_cell_release(struct dm_bio_prison *prison,
struct dm_bio_prison_cell *cell,
struct bio_list *bios)
{
- unsigned long flags;
-
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
__cell_release(prison, cell, bios);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
}
EXPORT_SYMBOL_GPL(dm_cell_release);
@@ -250,12 +247,10 @@ void dm_cell_visit_release(struct dm_bio_prison *prison,
void *context,
struct dm_bio_prison_cell *cell)
{
- unsigned long flags;
-
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
visit_fn(context, cell);
rb_erase(&cell->node, &prison->cells);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
}
EXPORT_SYMBOL_GPL(dm_cell_visit_release);
@@ -275,11 +270,10 @@ int dm_cell_promote_or_release(struct dm_bio_prison *prison,
struct dm_bio_prison_cell *cell)
{
int r;
- unsigned long flags;
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
r = __promote_or_release(prison, cell);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
return r;
}
@@ -379,10 +373,9 @@ EXPORT_SYMBOL_GPL(dm_deferred_entry_dec);
int dm_deferred_set_add_work(struct dm_deferred_set *ds, struct list_head *work)
{
int r = 1;
- unsigned long flags;
unsigned next_entry;
- spin_lock_irqsave(&ds->lock, flags);
+ spin_lock_irq(&ds->lock);
if ((ds->sweeper == ds->current_entry) &&
!ds->entries[ds->current_entry].count)
r = 0;
@@ -392,7 +385,7 @@ int dm_deferred_set_add_work(struct dm_deferred_set *ds, struct list_head *work)
if (!ds->entries[next_entry].count)
ds->current_entry = next_entry;
}
- spin_unlock_irqrestore(&ds->lock, flags);
+ spin_unlock_irq(&ds->lock);
return r;
}
diff --git a/drivers/md/dm-bio-prison-v2.c b/drivers/md/dm-bio-prison-v2.c
index b092cdc8e1ae..8ee019eda32d 100644
--- a/drivers/md/dm-bio-prison-v2.c
+++ b/drivers/md/dm-bio-prison-v2.c
@@ -177,11 +177,10 @@ bool dm_cell_get_v2(struct dm_bio_prison_v2 *prison,
struct dm_bio_prison_cell_v2 **cell_result)
{
int r;
- unsigned long flags;
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
r = __get(prison, key, lock_level, inmate, cell_prealloc, cell_result);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
return r;
}
@@ -261,11 +260,10 @@ int dm_cell_lock_v2(struct dm_bio_prison_v2 *prison,
struct dm_bio_prison_cell_v2 **cell_result)
{
int r;
- unsigned long flags;
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
r = __lock(prison, key, lock_level, cell_prealloc, cell_result);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
return r;
}
@@ -285,11 +283,9 @@ void dm_cell_quiesce_v2(struct dm_bio_prison_v2 *prison,
struct dm_bio_prison_cell_v2 *cell,
struct work_struct *continuation)
{
- unsigned long flags;
-
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
__quiesce(prison, cell, continuation);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
}
EXPORT_SYMBOL_GPL(dm_cell_quiesce_v2);
@@ -309,11 +305,10 @@ int dm_cell_lock_promote_v2(struct dm_bio_prison_v2 *prison,
unsigned new_lock_level)
{
int r;
- unsigned long flags;
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
r = __promote(prison, cell, new_lock_level);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
return r;
}
@@ -342,11 +337,10 @@ bool dm_cell_unlock_v2(struct dm_bio_prison_v2 *prison,
struct bio_list *bios)
{
bool r;
- unsigned long flags;
- spin_lock_irqsave(&prison->lock, flags);
+ spin_lock_irq(&prison->lock);
r = __unlock(prison, cell, bios);
- spin_unlock_irqrestore(&prison->lock, flags);
+ spin_unlock_irq(&prison->lock);
return r;
}
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index 8346e6d1816c..2d32821b3a5b 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -74,22 +74,19 @@ static bool __iot_idle_for(struct io_tracker *iot, unsigned long jifs)
static bool iot_idle_for(struct io_tracker *iot, unsigned long jifs)
{
bool r;
- unsigned long flags;
- spin_lock_irqsave(&iot->lock, flags);
+ spin_lock_irq(&iot->lock);
r = __iot_idle_for(iot, jifs);
- spin_unlock_irqrestore(&iot->lock, flags);
+ spin_unlock_irq(&iot->lock);
return r;
}
static void iot_io_begin(struct io_tracker *iot, sector_t len)
{
- unsigned long flags;
-
- spin_lock_irqsave(&iot->lock, flags);
+ spin_lock_irq(&iot->lock);
iot->in_flight += len;
- spin_unlock_irqrestore(&iot->lock, flags);
+ spin_unlock_irq(&iot->lock);
}
static void __iot_io_end(struct io_tracker *iot, sector_t len)
@@ -172,7 +169,6 @@ static void __commit(struct work_struct *_ws)
{
struct batcher *b = container_of(_ws, struct batcher, commit_work);
blk_status_t r;
- unsigned long flags;
struct list_head work_items;
struct work_struct *ws, *tmp;
struct continuation *k;
@@ -186,12 +182,12 @@ static void __commit(struct work_struct *_ws)
* We have to grab these before the commit_op to avoid a race
* condition.
*/
- spin_lock_irqsave(&b->lock, flags);
+ spin_lock_irq(&b->lock);
list_splice_init(&b->work_items, &work_items);
bio_list_merge(&bios, &b->bios);
bio_list_init(&b->bios);
b->commit_scheduled = false;
- spin_unlock_irqrestore(&b->lock, flags);
+ spin_unlock_irq(&b->lock);
r = b->commit_op(b->commit_context);
@@ -238,13 +234,12 @@ static void async_commit(struct batcher *b)
static void continue_after_commit(struct batcher *b, struct continuation *k)
{
- unsigned long flags;
bool commit_scheduled;
- spin_lock_irqsave(&b->lock, flags);
+ spin_lock_irq(&b->lock);
commit_scheduled = b->commit_scheduled;
list_add_tail(&k->ws.entry, &b->work_items);
- spin_unlock_irqrestore(&b->lock, flags);
+ spin_unlock_irq(&b->lock);
if (commit_scheduled)
async_commit(b);
@@ -255,13 +250,12 @@ static void continue_after_commit(struct batcher *b, struct continuation *k)
*/
static void issue_after_commit(struct batcher *b, struct bio *bio)
{
- unsigned long flags;
bool commit_scheduled;
- spin_lock_irqsave(&b->lock, flags);
+ spin_lock_irq(&b->lock);
commit_scheduled = b->commit_scheduled;
bio_list_add(&b->bios, bio);
- spin_unlock_irqrestore(&b->lock, flags);
+ spin_unlock_irq(&b->lock);
if (commit_scheduled)
async_commit(b);
@@ -273,12 +267,11 @@ static void issue_after_commit(struct batcher *b, struct bio *bio)
static void schedule_commit(struct batcher *b)
{
bool immediate;
- unsigned long flags;
- spin_lock_irqsave(&b->lock, flags);
+ spin_lock_irq(&b->lock);
immediate = !list_empty(&b->work_items) || !bio_list_empty(&b->bios);
b->commit_scheduled = true;
- spin_unlock_irqrestore(&b->lock, flags);
+ spin_unlock_irq(&b->lock);
if (immediate)
async_commit(b);
@@ -630,23 +623,19 @@ static struct per_bio_data *init_per_bio_data(struct bio *bio)
static void defer_bio(struct cache *cache, struct bio *bio)
{
- unsigned long flags;
-
- spin_lock_irqsave(&cache->lock, flags);
+ spin_lock_irq(&cache->lock);
bio_list_add(&cache->deferred_bios, bio);
- spin_unlock_irqrestore(&cache->lock, flags);
+ spin_unlock_irq(&cache->lock);
wake_deferred_bio_worker(cache);
}
static void defer_bios(struct cache *cache, struct bio_list *bios)
{
- unsigned long flags;
-
- spin_lock_irqsave(&cache->lock, flags);
+ spin_lock_irq(&cache->lock);
bio_list_merge(&cache->deferred_bios, bios);
bio_list_init(bios);
- spin_unlock_irqrestore(&cache->lock, flags);
+ spin_unlock_irq(&cache->lock);
wake_deferred_bio_worker(cache);
}
@@ -756,33 +745,27 @@ static dm_dblock_t oblock_to_dblock(struct cache *cache, dm_oblock_t oblock)
static void set_discard(struct cache *cache, dm_dblock_t b)
{
- unsigned long flags;
-
BUG_ON(from_dblock(b) >= from_dblock(cache->discard_nr_blocks));
atomic_inc(&cache->stats.discard_count);
- spin_lock_irqsave(&cache->lock, flags);
+ spin_lock_irq(&cache->lock);
set_bit(from_dblock(b), cache->discard_bitset);
- spin_unlock_irqrestore(&cache->lock, flags);
+ spin_unlock_irq(&cache->lock);
}
static void clear_discard(struct cache *cache, dm_dblock_t b)
{
- unsigned long flags;
-
- spin_lock_irqsave(&cache->lock, flags);
+ spin_lock_irq(&cache->lock);
clear_bit(from_dblock(b), cache->discard_bitset);
- spin_unlock_irqrestore(&cache->lock, flags);
+ spin_unlock_irq(&cache->lock);
}
static bool is_discarded(struct cache *cache, dm_dblock_t b)
{
int r;
- unsigned long flags;
-
- spin_lock_irqsave(&cache->lock, flags);
+ spin_lock_irq(&cache->lock);
r = test_bit(from_dblock(b), cache->discard_bitset);
- spin_unlock_irqrestore(&cache->lock, flags);
+ spin_unlock_irq(&cache->lock);
return r;
}
@@ -790,12 +773,10 @@ static bool is_discarded(struct cache *cache, dm_dblock_t b)
static bool is_discarded_oblock(struct cache *cache, dm_oblock_t b)
{
int r;
- unsigned long flags;
-
- spin_lock_irqsave(&cache->lock, flags);
+ spin_lock_irq(&cache->lock);
r = test_bit(from_dblock(oblock_to_dblock(cache, b)),
cache->discard_bitset);
- spin_unlock_irqrestore(&cache->lock, flags);
+ spin_unlock_irq(&cache->lock);
return r;
}
@@ -827,17 +808,16 @@ static void remap_to_cache(struct cache *cache, struct bio *bio,
static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio)
{
- unsigned long flags;
struct per_bio_data *pb;
- spin_lock_irqsave(&cache->lock, flags);
+ spin_lock_irq(&cache->lock);
if (cache->need_tick_bio && !op_is_flush(bio->bi_opf) &&
bio_op(bio) != REQ_OP_DISCARD) {
pb = get_per_bio_data(bio);
pb->tick = true;
cache->need_tick_bio = false;
}
- spin_unlock_irqrestore(&cache->lock, flags);
+ spin_unlock_irq(&cache->lock);
}
static void __remap_to_origin_clear_discard(struct cache *cache, struct bio *bio,
@@ -1889,17 +1869,16 @@ static void process_deferred_bios(struct work_struct *ws)
{
struct cache *cache = container_of(ws, struct cache, deferred_bio_worker);
- unsigned long flags;
bool commit_needed = false;
struct bio_list bios;
struct bio *bio;
bio_list_init(&bios);
- spin_lock_irqsave(&cache->lock, flags);
+ spin_lock_irq(&cache->lock);
bio_list_merge(&bios, &cache->deferred_bios);
bio_list_init(&cache->deferred_bios);
- spin_unlock_irqrestore(&cache->lock, flags);
+ spin_unlock_irq(&cache->lock);
while ((bio = bio_list_pop(&bios))) {
if (bio->bi_opf & REQ_PREFLUSH)
diff --git a/drivers/md/dm-clone-metadata.c b/drivers/md/dm-clone-metadata.c
index 6bc8c1d1c351..08c552e5e41b 100644
--- a/drivers/md/dm-clone-metadata.c
+++ b/drivers/md/dm-clone-metadata.c
@@ -712,7 +712,7 @@ static int __metadata_commit(struct dm_clone_metadata *cmd)
static int __flush_dmap(struct dm_clone_metadata *cmd, struct dirty_map *dmap)
{
int r;
- unsigned long word, flags;
+ unsigned long word;
word = 0;
do {
@@ -736,9 +736,9 @@ static int __flush_dmap(struct dm_clone_metadata *cmd, struct dirty_map *dmap)
return r;
/* Update the changed flag */
- spin_lock_irqsave(&cmd->bitmap_lock, flags);
+ spin_lock_irq(&cmd->bitmap_lock);
dmap->changed = 0;
- spin_unlock_irqrestore(&cmd->bitmap_lock, flags);
+ spin_unlock_irq(&cmd->bitmap_lock);
return 0;
}
@@ -746,7 +746,6 @@ static int __flush_dmap(struct dm_clone_metadata *cmd, struct dirty_map *dmap)
int dm_clone_metadata_commit(struct dm_clone_metadata *cmd)
{
int r = -EPERM;
- unsigned long flags;
struct dirty_map *dmap, *next_dmap;
down_write(&cmd->lock);
@@ -770,9 +769,9 @@ int dm_clone_metadata_commit(struct dm_clone_metadata *cmd)
}
/* Swap dirty bitmaps */
- spin_lock_irqsave(&cmd->bitmap_lock, flags);
+ spin_lock_irq(&cmd->bitmap_lock);
cmd->current_dmap = next_dmap;
- spin_unlock_irqrestore(&cmd->bitmap_lock, flags);
+ spin_unlock_irq(&cmd->bitmap_lock);
/*
* No one is accessing the old dirty bitmap anymore, so we can flush
@@ -817,9 +816,9 @@ int dm_clone_cond_set_range(struct dm_clone_metadata *cmd, unsigned long start,
{
int r = 0;
struct dirty_map *dmap;
- unsigned long word, region_nr, flags;
+ unsigned long word, region_nr;
- spin_lock_irqsave(&cmd->bitmap_lock, flags);
+ spin_lock_irq(&cmd->bitmap_lock);
if (cmd->read_only) {
r = -EPERM;
@@ -836,7 +835,7 @@ int dm_clone_cond_set_range(struct dm_clone_metadata *cmd, unsigned long start,
}
}
out:
- spin_unlock_irqrestore(&cmd->bitmap_lock, flags);
+ spin_unlock_irq(&cmd->bitmap_lock);
return r;
}
@@ -903,13 +902,11 @@ out:
void dm_clone_metadata_set_read_only(struct dm_clone_metadata *cmd)
{
- unsigned long flags;
-
down_write(&cmd->lock);
- spin_lock_irqsave(&cmd->bitmap_lock, flags);
+ spin_lock_irq(&cmd->bitmap_lock);
cmd->read_only = 1;
- spin_unlock_irqrestore(&cmd->bitmap_lock, flags);
+ spin_unlock_irq(&cmd->bitmap_lock);
if (!cmd->fail_io)
dm_bm_set_read_only(cmd->bm);
@@ -919,13 +916,11 @@ void dm_clone_metadata_set_read_only(struct dm_clone_metadata *cmd)
void dm_clone_metadata_set_read_write(struct dm_clone_metadata *cmd)
{
- unsigned long flags;
-
down_write(&cmd->lock);
- spin_lock_irqsave(&cmd->bitmap_lock, flags);
+ spin_lock_irq(&cmd->bitmap_lock);
cmd->read_only = 0;
- spin_unlock_irqrestore(&cmd->bitmap_lock, flags);
+ spin_unlock_irq(&cmd->bitmap_lock);
if (!cmd->fail_io)
dm_bm_set_read_write(cmd->bm);
diff --git a/drivers/md/dm-clone-metadata.h b/drivers/md/dm-clone-metadata.h
index 434bff08508b..3fe50a781c11 100644
--- a/drivers/md/dm-clone-metadata.h
+++ b/drivers/md/dm-clone-metadata.h
@@ -44,7 +44,9 @@ int dm_clone_set_region_hydrated(struct dm_clone_metadata *cmd, unsigned long re
* @start: Starting region number
* @nr_regions: Number of regions in the range
*
- * This function doesn't block, so it's safe to call it from interrupt context.
+ * This function doesn't block, but since it uses spin_lock_irq()/spin_unlock_irq()
+ * it's NOT safe to call it from any context where interrupts are disabled, e.g.,
+ * from interrupt context.
*/
int dm_clone_cond_set_range(struct dm_clone_metadata *cmd, unsigned long start,
unsigned long nr_regions);
diff --git a/drivers/md/dm-clone-target.c b/drivers/md/dm-clone-target.c
index 4ca8f1977222..b3d89072d21c 100644
--- a/drivers/md/dm-clone-target.c
+++ b/drivers/md/dm-clone-target.c
@@ -332,8 +332,6 @@ static void submit_bios(struct bio_list *bios)
*/
static void issue_bio(struct clone *clone, struct bio *bio)
{
- unsigned long flags;
-
if (!bio_triggers_commit(clone, bio)) {
generic_make_request(bio);
return;
@@ -352,9 +350,9 @@ static void issue_bio(struct clone *clone, struct bio *bio)
* Batch together any bios that trigger commits and then issue a single
* commit for them in process_deferred_flush_bios().
*/
- spin_lock_irqsave(&clone->lock, flags);
+ spin_lock_irq(&clone->lock);
bio_list_add(&clone->deferred_flush_bios, bio);
- spin_unlock_irqrestore(&clone->lock, flags);
+ spin_unlock_irq(&clone->lock);
wake_worker(clone);
}
@@ -469,7 +467,7 @@ static void complete_discard_bio(struct clone *clone, struct bio *bio, bool succ
static void process_discard_bio(struct clone *clone, struct bio *bio)
{
- unsigned long rs, re, flags;
+ unsigned long rs, re;
bio_region_range(clone, bio, &rs, &re);
BUG_ON(re > clone->nr_regions);
@@ -501,9 +499,9 @@ static void process_discard_bio(struct clone *clone, struct bio *bio)
/*
* Defer discard processing.
*/
- spin_lock_irqsave(&clone->lock, flags);
+ spin_lock_irq(&clone->lock);
bio_list_add(&clone->deferred_discard_bios, bio);
- spin_unlock_irqrestore(&clone->lock, flags);
+ spin_unlock_irq(&clone->lock);
wake_worker(clone);
}
@@ -554,6 +552,12 @@ struct hash_table_bucket {
#define bucket_unlock_irqrestore(bucket, flags) \
spin_unlock_irqrestore(&(bucket)->lock, flags)
+#define bucket_lock_irq(bucket) \
+ spin_lock_irq(&(bucket)->lock)
+
+#define bucket_unlock_irq(bucket) \
+ spin_unlock_irq(&(bucket)->lock)
+
static int hash_table_init(struct clone *clone)
{
unsigned int i, sz;
@@ -851,7 +855,6 @@ static void hydration_overwrite(struct dm_clone_region_hydration *hd, struct bio
*/
static void hydrate_bio_region(struct clone *clone, struct bio *bio)
{
- unsigned long flags;
unsigned long region_nr;
struct hash_table_bucket *bucket;
struct dm_clone_region_hydration *hd, *hd2;
@@ -859,19 +862,19 @@ static void hydrate_bio_region(struct clone *clone, struct bio *bio)
region_nr = bio_to_region(clone, bio);
bucket = get_hash_table_bucket(clone, region_nr);
- bucket_lock_irqsave(bucket, flags);
+ bucket_lock_irq(bucket);
hd = __hash_find(bucket, region_nr);
if (hd) {
/* Someone else is hydrating the region */
bio_list_add(&hd->deferred_bios, bio);
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
return;
}
if (dm_clone_is_region_hydrated(clone->cmd, region_nr)) {
/* The region has been hydrated */
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
issue_bio(clone, bio);
return;
}
@@ -880,16 +883,16 @@ static void hydrate_bio_region(struct clone *clone, struct bio *bio)
* We must allocate a hydration descriptor and start the hydration of
* the corresponding region.
*/
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
hd = alloc_hydration(clone);
hydration_init(hd, region_nr);
- bucket_lock_irqsave(bucket, flags);
+ bucket_lock_irq(bucket);
/* Check if the region has been hydrated in the meantime. */
if (dm_clone_is_region_hydrated(clone->cmd, region_nr)) {
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
free_hydration(hd);
issue_bio(clone, bio);
return;
@@ -899,7 +902,7 @@ static void hydrate_bio_region(struct clone *clone, struct bio *bio)
if (hd2 != hd) {
/* Someone else started the region's hydration. */
bio_list_add(&hd2->deferred_bios, bio);
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
free_hydration(hd);
return;
}
@@ -911,7 +914,7 @@ static void hydrate_bio_region(struct clone *clone, struct bio *bio)
*/
if (unlikely(get_clone_mode(clone) >= CM_READ_ONLY)) {
hlist_del(&hd->h);
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
free_hydration(hd);
bio_io_error(bio);
return;
@@ -925,11 +928,11 @@ static void hydrate_bio_region(struct clone *clone, struct bio *bio)
* to the destination device.
*/
if (is_overwrite_bio(clone, bio)) {
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
hydration_overwrite(hd, bio);
} else {
bio_list_add(&hd->deferred_bios, bio);
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
hydration_copy(hd, 1);
}
}
@@ -996,7 +999,6 @@ static unsigned long __start_next_hydration(struct clone *clone,
unsigned long offset,
struct batch_info *batch)
{
- unsigned long flags;
struct hash_table_bucket *bucket;
struct dm_clone_region_hydration *hd;
unsigned long nr_regions = clone->nr_regions;
@@ -1010,13 +1012,13 @@ static unsigned long __start_next_hydration(struct clone *clone,
break;
bucket = get_hash_table_bucket(clone, offset);
- bucket_lock_irqsave(bucket, flags);
+ bucket_lock_irq(bucket);
if (!dm_clone_is_region_hydrated(clone->cmd, offset) &&
!__hash_find(bucket, offset)) {
hydration_init(hd, offset);
__insert_region_hydration(bucket, hd);
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
/* Batch hydration */
__batch_hydration(batch, hd);
@@ -1024,7 +1026,7 @@ static unsigned long __start_next_hydration(struct clone *clone,
return (offset + 1);
}
- bucket_unlock_irqrestore(bucket, flags);
+ bucket_unlock_irq(bucket);
} while (++offset < nr_regions);
@@ -1140,13 +1142,13 @@ static void process_deferred_discards(struct clone *clone)
int r = -EPERM;
struct bio *bio;
struct blk_plug plug;
- unsigned long rs, re, flags;
+ unsigned long rs, re;
struct bio_list discards = BIO_EMPTY_LIST;
- spin_lock_irqsave(&clone->lock, flags);
+ spin_lock_irq(&clone->lock);
bio_list_merge(&discards, &clone->deferred_discard_bios);
bio_list_init(&clone->deferred_discard_bios);
- spin_unlock_irqrestore(&clone->lock, flags);
+ spin_unlock_irq(&clone->lock);
if (bio_list_empty(&discards))
return;
@@ -1176,13 +1178,12 @@ out:
static void process_deferred_bios(struct clone *clone)
{
- unsigned long flags;
struct bio_list bios = BIO_EMPTY_LIST;
- spin_lock_irqsave(&clone->lock, flags);
+ spin_lock_irq(&clone->lock);
bio_list_merge(&bios, &clone->deferred_bios);
bio_list_init(&clone->deferred_bios);
- spin_unlock_irqrestore(&clone->lock, flags);
+ spin_unlock_irq(&clone->lock);
if (bio_list_empty(&bios))
return;
@@ -1193,7 +1194,6 @@ static void process_deferred_bios(struct clone *clone)
static void process_deferred_flush_bios(struct clone *clone)
{
struct bio *bio;
- unsigned long flags;
struct bio_list bios = BIO_EMPTY_LIST;
struct bio_list bio_completions = BIO_EMPTY_LIST;
@@ -1201,13 +1201,13 @@ static void process_deferred_flush_bios(struct clone *clone)
* If there are any deferred flush bios, we must commit the metadata
* before issuing them or signaling their completion.
*/
- spin_lock_irqsave(&clone->lock, flags);
+ spin_lock_irq(&clone->lock);
bio_list_merge(&bios, &clone->deferred_flush_bios);
bio_list_init(&clone->deferred_flush_bios);
bio_list_merge(&bio_completions, &clone->deferred_flush_completions);
bio_list_init(&clone->deferred_flush_completions);
- spin_unlock_irqrestore(&clone->lock, flags);
+ spin_unlock_irq(&clone->lock);
if (bio_list_empty(&bios) && bio_list_empty(&bio_completions) &&
!(dm_clone_changed_this_transaction(clone->cmd) && need_commit_due_to_time(clone)))
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index f87f6495652f..eb9782fc93fe 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -2700,21 +2700,18 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
}
ret = -ENOMEM;
- cc->io_queue = alloc_workqueue("kcryptd_io/%s",
- WQ_HIGHPRI | WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM,
- 1, devname);
+ cc->io_queue = alloc_workqueue("kcryptd_io/%s", WQ_MEM_RECLAIM, 1, devname);
if (!cc->io_queue) {
ti->error = "Couldn't create kcryptd io queue";
goto bad;
}
if (test_bit(DM_CRYPT_SAME_CPU, &cc->flags))
- cc->crypt_queue = alloc_workqueue("kcryptd/%s",
- WQ_HIGHPRI | WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM,
+ cc->crypt_queue = alloc_workqueue("kcryptd/%s", WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM,
1, devname);
else
cc->crypt_queue = alloc_workqueue("kcryptd/%s",
- WQ_HIGHPRI | WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM | WQ_UNBOUND,
+ WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM | WQ_UNBOUND,
num_online_cpus(), devname);
if (!cc->crypt_queue) {
ti->error = "Couldn't create kcryptd queue";
diff --git a/drivers/md/dm-dust.c b/drivers/md/dm-dust.c
index 8288887b7f94..eb37584427a4 100644
--- a/drivers/md/dm-dust.c
+++ b/drivers/md/dm-dust.c
@@ -17,6 +17,7 @@
struct badblock {
struct rb_node node;
sector_t bb;
+ unsigned char wr_fail_cnt;
};
struct dust_device {
@@ -101,7 +102,8 @@ static int dust_remove_block(struct dust_device *dd, unsigned long long block)
return 0;
}
-static int dust_add_block(struct dust_device *dd, unsigned long long block)
+static int dust_add_block(struct dust_device *dd, unsigned long long block,
+ unsigned char wr_fail_cnt)
{
struct badblock *bblock;
unsigned long flags;
@@ -115,6 +117,7 @@ static int dust_add_block(struct dust_device *dd, unsigned long long block)
spin_lock_irqsave(&dd->dust_lock, flags);
bblock->bb = block;
+ bblock->wr_fail_cnt = wr_fail_cnt;
if (!dust_rb_insert(&dd->badblocklist, bblock)) {
if (!dd->quiet_mode) {
DMERR("%s: block %llu already in badblocklist",
@@ -126,8 +129,10 @@ static int dust_add_block(struct dust_device *dd, unsigned long long block)
}
dd->badblock_count++;
- if (!dd->quiet_mode)
- DMINFO("%s: badblock added at block %llu", __func__, block);
+ if (!dd->quiet_mode) {
+ DMINFO("%s: badblock added at block %llu with write fail count %hhu",
+ __func__, block, wr_fail_cnt);
+ }
spin_unlock_irqrestore(&dd->dust_lock, flags);
return 0;
@@ -163,22 +168,27 @@ static int dust_map_read(struct dust_device *dd, sector_t thisblock,
bool fail_read_on_bb)
{
unsigned long flags;
- int ret = DM_MAPIO_REMAPPED;
+ int r = DM_MAPIO_REMAPPED;
if (fail_read_on_bb) {
thisblock >>= dd->sect_per_block_shift;
spin_lock_irqsave(&dd->dust_lock, flags);
- ret = __dust_map_read(dd, thisblock);
+ r = __dust_map_read(dd, thisblock);
spin_unlock_irqrestore(&dd->dust_lock, flags);
}
- return ret;
+ return r;
}
-static void __dust_map_write(struct dust_device *dd, sector_t thisblock)
+static int __dust_map_write(struct dust_device *dd, sector_t thisblock)
{
struct badblock *bblk = dust_rb_search(&dd->badblocklist, thisblock);
+ if (bblk && bblk->wr_fail_cnt > 0) {
+ bblk->wr_fail_cnt--;
+ return DM_MAPIO_KILL;
+ }
+
if (bblk) {
rb_erase(&bblk->node, &dd->badblocklist);
dd->badblock_count--;
@@ -189,37 +199,40 @@ static void __dust_map_write(struct dust_device *dd, sector_t thisblock)
(unsigned long long)thisblock);
}
}
+
+ return DM_MAPIO_REMAPPED;
}
static int dust_map_write(struct dust_device *dd, sector_t thisblock,
bool fail_read_on_bb)
{
unsigned long flags;
+ int ret = DM_MAPIO_REMAPPED;
if (fail_read_on_bb) {
thisblock >>= dd->sect_per_block_shift;
spin_lock_irqsave(&dd->dust_lock, flags);
- __dust_map_write(dd, thisblock);
+ ret = __dust_map_write(dd, thisblock);
spin_unlock_irqrestore(&dd->dust_lock, flags);
}
- return DM_MAPIO_REMAPPED;
+ return ret;
}
static int dust_map(struct dm_target *ti, struct bio *bio)
{
struct dust_device *dd = ti->private;
- int ret;
+ int r;
bio_set_dev(bio, dd->dev->bdev);
bio->bi_iter.bi_sector = dd->start + dm_target_offset(ti, bio->bi_iter.bi_sector);
if (bio_data_dir(bio) == READ)
- ret = dust_map_read(dd, bio->bi_iter.bi_sector, dd->fail_read_on_bb);
+ r = dust_map_read(dd, bio->bi_iter.bi_sector, dd->fail_read_on_bb);
else
- ret = dust_map_write(dd, bio->bi_iter.bi_sector, dd->fail_read_on_bb);
+ r = dust_map_write(dd, bio->bi_iter.bi_sector, dd->fail_read_on_bb);
- return ret;
+ return r;
}
static bool __dust_clear_badblocks(struct rb_root *tree,
@@ -375,8 +388,10 @@ static int dust_message(struct dm_target *ti, unsigned int argc, char **argv,
struct dust_device *dd = ti->private;
sector_t size = i_size_read(dd->dev->bdev->bd_inode) >> SECTOR_SHIFT;
bool invalid_msg = false;
- int result = -EINVAL;
+ int r = -EINVAL;
unsigned long long tmp, block;
+ unsigned char wr_fail_cnt;
+ unsigned int tmp_ui;
unsigned long flags;
char dummy;
@@ -388,45 +403,69 @@ static int dust_message(struct dm_target *ti, unsigned int argc, char **argv,
} else if (!strcasecmp(argv[0], "disable")) {
DMINFO("disabling read failures on bad sectors");
dd->fail_read_on_bb = false;
- result = 0;
+ r = 0;
} else if (!strcasecmp(argv[0], "enable")) {
DMINFO("enabling read failures on bad sectors");
dd->fail_read_on_bb = true;
- result = 0;
+ r = 0;
} else if (!strcasecmp(argv[0], "countbadblocks")) {
spin_lock_irqsave(&dd->dust_lock, flags);
DMINFO("countbadblocks: %llu badblock(s) found",
dd->badblock_count);
spin_unlock_irqrestore(&dd->dust_lock, flags);
- result = 0;
+ r = 0;
} else if (!strcasecmp(argv[0], "clearbadblocks")) {
- result = dust_clear_badblocks(dd);
+ r = dust_clear_badblocks(dd);
} else if (!strcasecmp(argv[0], "quiet")) {
if (!dd->quiet_mode)
dd->quiet_mode = true;
else
dd->quiet_mode = false;
- result = 0;
+ r = 0;
} else {
invalid_msg = true;
}
} else if (argc == 2) {
if (sscanf(argv[1], "%llu%c", &tmp, &dummy) != 1)
- return result;
+ return r;
block = tmp;
sector_div(size, dd->sect_per_block);
if (block > size) {
DMERR("selected block value out of range");
- return result;
+ return r;
}
if (!strcasecmp(argv[0], "addbadblock"))
- result = dust_add_block(dd, block);
+ r = dust_add_block(dd, block, 0);
else if (!strcasecmp(argv[0], "removebadblock"))
- result = dust_remove_block(dd, block);
+ r = dust_remove_block(dd, block);
else if (!strcasecmp(argv[0], "queryblock"))
- result = dust_query_block(dd, block);
+ r = dust_query_block(dd, block);
+ else
+ invalid_msg = true;
+
+ } else if (argc == 3) {
+ if (sscanf(argv[1], "%llu%c", &tmp, &dummy) != 1)
+ return r;
+
+ if (sscanf(argv[2], "%u%c", &tmp_ui, &dummy) != 1)
+ return r;
+
+ block = tmp;
+ if (tmp_ui > 255) {
+ DMERR("selected write fail count out of range");
+ return r;
+ }
+ wr_fail_cnt = tmp_ui;
+ sector_div(size, dd->sect_per_block);
+ if (block > size) {
+ DMERR("selected block value out of range");
+ return r;
+ }
+
+ if (!strcasecmp(argv[0], "addbadblock"))
+ r = dust_add_block(dd, block, wr_fail_cnt);
else
invalid_msg = true;
@@ -436,7 +475,7 @@ static int dust_message(struct dm_target *ti, unsigned int argc, char **argv,
if (invalid_msg)
DMERR("unrecognized message '%s' received", argv[0]);
- return result;
+ return r;
}
static void dust_status(struct dm_target *ti, status_type_t type,
@@ -499,12 +538,12 @@ static struct target_type dust_target = {
static int __init dm_dust_init(void)
{
- int result = dm_register_target(&dust_target);
+ int r = dm_register_target(&dust_target);
- if (result < 0)
- DMERR("dm_register_target failed %d", result);
+ if (r < 0)
+ DMERR("dm_register_target failed %d", r);
- return result;
+ return r;
}
static void __exit dm_dust_exit(void)
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index dab4446fe7d8..b225b3e445fa 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -53,6 +53,7 @@
#define SB_VERSION_1 1
#define SB_VERSION_2 2
#define SB_VERSION_3 3
+#define SB_VERSION_4 4
#define SB_SECTORS 8
#define MAX_SECTORS_PER_BLOCK 8
@@ -73,6 +74,7 @@ struct superblock {
#define SB_FLAG_HAVE_JOURNAL_MAC 0x1
#define SB_FLAG_RECALCULATING 0x2
#define SB_FLAG_DIRTY_BITMAP 0x4
+#define SB_FLAG_FIXED_PADDING 0x8
#define JOURNAL_ENTRY_ROUNDUP 8
@@ -250,6 +252,7 @@ struct dm_integrity_c {
bool journal_uptodate;
bool just_formatted;
bool recalculate_flag;
+ bool fix_padding;
struct alg_spec internal_hash_alg;
struct alg_spec journal_crypt_alg;
@@ -463,7 +466,9 @@ static void wraparound_section(struct dm_integrity_c *ic, unsigned *sec_ptr)
static void sb_set_version(struct dm_integrity_c *ic)
{
- if (ic->mode == 'B' || ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP))
+ if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING))
+ ic->sb->version = SB_VERSION_4;
+ else if (ic->mode == 'B' || ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP))
ic->sb->version = SB_VERSION_3;
else if (ic->meta_dev || ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))
ic->sb->version = SB_VERSION_2;
@@ -2955,6 +2960,7 @@ static void dm_integrity_status(struct dm_target *ti, status_type_t type,
arg_count += !!ic->internal_hash_alg.alg_string;
arg_count += !!ic->journal_crypt_alg.alg_string;
arg_count += !!ic->journal_mac_alg.alg_string;
+ arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0;
DMEMIT("%s %llu %u %c %u", ic->dev->name, (unsigned long long)ic->start,
ic->tag_size, ic->mode, arg_count);
if (ic->meta_dev)
@@ -2974,6 +2980,8 @@ static void dm_integrity_status(struct dm_target *ti, status_type_t type,
DMEMIT(" sectors_per_bit:%llu", (unsigned long long)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit);
DMEMIT(" bitmap_flush_interval:%u", jiffies_to_msecs(ic->bitmap_flush_interval));
}
+ if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0)
+ DMEMIT(" fix_padding");
#define EMIT_ALG(a, n) \
do { \
@@ -3042,8 +3050,14 @@ static int calculate_device_limits(struct dm_integrity_c *ic)
if (!ic->meta_dev) {
sector_t last_sector, last_area, last_offset;
- ic->metadata_run = roundup((__u64)ic->tag_size << (ic->sb->log2_interleave_sectors - ic->sb->log2_sectors_per_block),
- (__u64)(1 << SECTOR_SHIFT << METADATA_PADDING_SECTORS)) >> SECTOR_SHIFT;
+ /* we have to maintain excessive padding for compatibility with existing volumes */
+ __u64 metadata_run_padding =
+ ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING) ?
+ (__u64)(METADATA_PADDING_SECTORS << SECTOR_SHIFT) :
+ (__u64)(1 << SECTOR_SHIFT << METADATA_PADDING_SECTORS);
+
+ ic->metadata_run = round_up((__u64)ic->tag_size << (ic->sb->log2_interleave_sectors - ic->sb->log2_sectors_per_block),
+ metadata_run_padding) >> SECTOR_SHIFT;
if (!(ic->metadata_run & (ic->metadata_run - 1)))
ic->log2_metadata_run = __ffs(ic->metadata_run);
else
@@ -3086,6 +3100,8 @@ static int initialize_superblock(struct dm_integrity_c *ic, unsigned journal_sec
journal_sections = 1;
if (!ic->meta_dev) {
+ if (ic->fix_padding)
+ ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_PADDING);
ic->sb->journal_sections = cpu_to_le32(journal_sections);
if (!interleave_sectors)
interleave_sectors = DEFAULT_INTERLEAVE_SECTORS;
@@ -3725,6 +3741,8 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv)
goto bad;
} else if (!strcmp(opt_string, "recalculate")) {
ic->recalculate_flag = true;
+ } else if (!strcmp(opt_string, "fix_padding")) {
+ ic->fix_padding = true;
} else {
r = -EINVAL;
ti->error = "Invalid argument";
@@ -3867,7 +3885,7 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv)
should_write_sb = true;
}
- if (!ic->sb->version || ic->sb->version > SB_VERSION_3) {
+ if (!ic->sb->version || ic->sb->version > SB_VERSION_4) {
r = -EINVAL;
ti->error = "Unknown version";
goto bad;
@@ -4182,7 +4200,7 @@ static void dm_integrity_dtr(struct dm_target *ti)
static struct target_type integrity_target = {
.name = "integrity",
- .version = {1, 3, 0},
+ .version = {1, 4, 0},
.module = THIS_MODULE,
.features = DM_TARGET_SINGLETON | DM_TARGET_INTEGRITY,
.ctr = dm_integrity_ctr,
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index b0aa595e4375..c412eaa975fc 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -209,6 +209,7 @@ struct raid_dev {
#define RT_FLAG_RS_SUSPENDED 5
#define RT_FLAG_RS_IN_SYNC 6
#define RT_FLAG_RS_RESYNCING 7
+#define RT_FLAG_RS_GROW 8
/* Array elements of 64 bit needed for rebuild/failed disk bits */
#define DISKS_ARRAY_ELEMS ((MAX_RAID_DEVICES + (sizeof(uint64_t) * 8 - 1)) / sizeof(uint64_t) / 8)
@@ -241,6 +242,9 @@ struct raid_set {
struct raid_type *raid_type;
struct dm_target_callbacks callbacks;
+ sector_t array_sectors;
+ sector_t dev_sectors;
+
/* Optional raid4/5/6 journal device */
struct journal_dev {
struct dm_dev *dev;
@@ -616,7 +620,6 @@ static int raid10_format_to_md_layout(struct raid_set *rs,
} else if (algorithm == ALGORITHM_RAID10_FAR) {
f = copies;
- r = !RAID10_OFFSET;
if (!test_bit(__CTR_FLAG_RAID10_USE_NEAR_SETS, &rs->ctr_flags))
r |= RAID10_USE_FAR_SETS;
@@ -1615,13 +1618,12 @@ static int _check_data_dev_sectors(struct raid_set *rs)
}
/* Calculate the sectors per device and per array used for @rs */
-static int rs_set_dev_and_array_sectors(struct raid_set *rs, bool use_mddev)
+static int rs_set_dev_and_array_sectors(struct raid_set *rs, sector_t sectors, bool use_mddev)
{
int delta_disks;
unsigned int data_stripes;
+ sector_t array_sectors = sectors, dev_sectors = sectors;
struct mddev *mddev = &rs->md;
- struct md_rdev *rdev;
- sector_t array_sectors = rs->ti->len, dev_sectors = rs->ti->len;
if (use_mddev) {
delta_disks = mddev->delta_disks;
@@ -1656,12 +1658,9 @@ static int rs_set_dev_and_array_sectors(struct raid_set *rs, bool use_mddev)
/* Striped layouts */
array_sectors = (data_stripes + delta_disks) * dev_sectors;
- rdev_for_each(rdev, mddev)
- if (!test_bit(Journal, &rdev->flags))
- rdev->sectors = dev_sectors;
-
mddev->array_sectors = array_sectors;
mddev->dev_sectors = dev_sectors;
+ rs_set_rdev_sectors(rs);
return _check_data_dev_sectors(rs);
bad:
@@ -1670,7 +1669,7 @@ bad:
}
/* Setup recovery on @rs */
-static void __rs_setup_recovery(struct raid_set *rs, sector_t dev_sectors)
+static void rs_setup_recovery(struct raid_set *rs, sector_t dev_sectors)
{
/* raid0 does not recover */
if (rs_is_raid0(rs))
@@ -1691,22 +1690,6 @@ static void __rs_setup_recovery(struct raid_set *rs, sector_t dev_sectors)
? MaxSector : dev_sectors;
}
-/* Setup recovery on @rs based on raid type, device size and 'nosync' flag */
-static void rs_setup_recovery(struct raid_set *rs, sector_t dev_sectors)
-{
- if (!dev_sectors)
- /* New raid set or 'sync' flag provided */
- __rs_setup_recovery(rs, 0);
- else if (dev_sectors == MaxSector)
- /* Prevent recovery */
- __rs_setup_recovery(rs, MaxSector);
- else if (__rdev_sectors(rs) < dev_sectors)
- /* Grown raid set */
- __rs_setup_recovery(rs, __rdev_sectors(rs));
- else
- __rs_setup_recovery(rs, MaxSector);
-}
-
static void do_table_event(struct work_struct *ws)
{
struct raid_set *rs = container_of(ws, struct raid_set, md.event_work);
@@ -2474,7 +2457,7 @@ static int super_validate(struct raid_set *rs, struct md_rdev *rdev)
return -EINVAL;
}
- /* Enable bitmap creation for RAID levels != 0 */
+ /* Enable bitmap creation on @rs unless no metadevs or raid0 or journaled raid4/5/6 set. */
mddev->bitmap_info.offset = (rt_is_raid0(rs->raid_type) || rs->journal_dev.dev) ? 0 : to_sector(4096);
mddev->bitmap_info.default_offset = mddev->bitmap_info.offset;
@@ -2911,7 +2894,7 @@ static int rs_setup_reshape(struct raid_set *rs)
/* Remove disk(s) */
} else if (rs->delta_disks < 0) {
- r = rs_set_dev_and_array_sectors(rs, true);
+ r = rs_set_dev_and_array_sectors(rs, rs->ti->len, true);
mddev->reshape_backwards = 1; /* removing disk(s) -> backward reshape */
/* Change layout and/or chunk size */
@@ -3008,7 +2991,7 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
bool resize = false;
struct raid_type *rt;
unsigned int num_raid_params, num_raid_devs;
- sector_t calculated_dev_sectors, rdev_sectors, reshape_sectors;
+ sector_t sb_array_sectors, rdev_sectors, reshape_sectors;
struct raid_set *rs = NULL;
const char *arg;
struct rs_layout rs_layout;
@@ -3067,11 +3050,13 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
*
* Any existing superblock will overwrite the array and device sizes
*/
- r = rs_set_dev_and_array_sectors(rs, false);
+ r = rs_set_dev_and_array_sectors(rs, rs->ti->len, false);
if (r)
goto bad;
- calculated_dev_sectors = rs->md.dev_sectors;
+ /* Memorize just calculated, potentially larger sizes to grow the raid set in preresume */
+ rs->array_sectors = rs->md.array_sectors;
+ rs->dev_sectors = rs->md.dev_sectors;
/*
* Backup any new raid set level, layout, ...
@@ -3084,6 +3069,8 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
if (r)
goto bad;
+ /* All in-core metadata now as of current superblocks after calling analyse_superblocks() */
+ sb_array_sectors = rs->md.array_sectors;
rdev_sectors = __rdev_sectors(rs);
if (!rdev_sectors) {
ti->error = "Invalid rdev size";
@@ -3093,8 +3080,11 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
reshape_sectors = _get_reshape_sectors(rs);
- if (calculated_dev_sectors != rdev_sectors)
- resize = calculated_dev_sectors != (reshape_sectors ? rdev_sectors - reshape_sectors : rdev_sectors);
+ if (rs->dev_sectors != rdev_sectors) {
+ resize = (rs->dev_sectors != rdev_sectors - reshape_sectors);
+ if (rs->dev_sectors > rdev_sectors - reshape_sectors)
+ set_bit(RT_FLAG_RS_GROW, &rs->runtime_flags);
+ }
INIT_WORK(&rs->md.event_work, do_table_event);
ti->private = rs;
@@ -3121,13 +3111,8 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);
rs_set_new(rs);
} else if (rs_is_recovering(rs)) {
- /* Rebuild particular devices */
- if (test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags)) {
- set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);
- rs_setup_recovery(rs, MaxSector);
- }
/* A recovering raid set may be resized */
- ; /* skip setup rs */
+ goto size_check;
} else if (rs_is_reshaping(rs)) {
/* Have to reject size change request during reshape */
if (resize) {
@@ -3171,6 +3156,9 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
rs_setup_recovery(rs, MaxSector);
rs_set_new(rs);
} else if (rs_reshape_requested(rs)) {
+ /* Only request grow on raid set size extensions, not on reshapes. */
+ clear_bit(RT_FLAG_RS_GROW, &rs->runtime_flags);
+
/*
* No need to check for 'ongoing' takeover here, because takeover
* is an instant operation as oposed to an ongoing reshape.
@@ -3201,13 +3189,31 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
}
rs_set_cur(rs);
} else {
+size_check:
/* May not set recovery when a device rebuild is requested */
if (test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags)) {
- rs_setup_recovery(rs, MaxSector);
+ clear_bit(RT_FLAG_RS_GROW, &rs->runtime_flags);
set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);
- } else
- rs_setup_recovery(rs, test_bit(__CTR_FLAG_SYNC, &rs->ctr_flags) ?
- 0 : (resize ? calculated_dev_sectors : MaxSector));
+ rs_setup_recovery(rs, MaxSector);
+ } else if (test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags)) {
+ /*
+ * Set raid set to current size, i.e. size as of
+ * superblocks to grow to larger size in preresume.
+ */
+ r = rs_set_dev_and_array_sectors(rs, sb_array_sectors, false);
+ if (r)
+ goto bad;
+
+ rs_setup_recovery(rs, rs->md.recovery_cp < rs->md.dev_sectors ? rs->md.recovery_cp : rs->md.dev_sectors);
+ } else {
+ /* This is no size change or it is shrinking, update size and record in superblocks */
+ r = rs_set_dev_and_array_sectors(rs, rs->ti->len, false);
+ if (r)
+ goto bad;
+
+ if (sb_array_sectors > rs->array_sectors)
+ set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);
+ }
rs_set_cur(rs);
}
@@ -3406,10 +3412,9 @@ static const char *__raid_dev_status(struct raid_set *rs, struct md_rdev *rdev)
/* Helper to return resync/reshape progress for @rs and runtime flags for raid set in sync / resynching */
static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
- sector_t resync_max_sectors)
+ enum sync_state state, sector_t resync_max_sectors)
{
sector_t r;
- enum sync_state state;
struct mddev *mddev = &rs->md;
clear_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
@@ -3420,8 +3425,6 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
} else {
- state = decipher_sync_action(mddev, recovery);
-
if (state == st_idle && !test_bit(MD_RECOVERY_INTR, &recovery))
r = mddev->recovery_cp;
else
@@ -3439,18 +3442,14 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
/*
* In case we are recovering, the array is not in sync
* and health chars should show the recovering legs.
+ *
+ * Already retrieved recovery offset from curr_resync_completed above.
*/
;
- else if (state == st_resync)
- /*
- * If "resync" is occurring, the raid set
- * is or may be out of sync hence the health
- * characters shall be 'a'.
- */
- set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
- else if (state == st_reshape)
+
+ else if (state == st_resync || state == st_reshape)
/*
- * If "reshape" is occurring, the raid set
+ * If "resync/reshape" is occurring, the raid set
* is or may be out of sync hence the health
* characters shall be 'a'.
*/
@@ -3464,22 +3463,22 @@ static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery,
*/
set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
- else {
- struct md_rdev *rdev;
-
+ else if (test_bit(MD_RECOVERY_NEEDED, &recovery))
/*
* We are idle and recovery is needed, prevent 'A' chars race
* caused by components still set to in-sync by constructor.
*/
- if (test_bit(MD_RECOVERY_NEEDED, &recovery))
- set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
+ set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags);
+ else {
/*
- * The raid set may be doing an initial sync, or it may
- * be rebuilding individual components. If all the
- * devices are In_sync, then it is the raid set that is
- * being initialized.
+ * We are idle and the raid set may be doing an initial
+ * sync, or it may be rebuilding individual components.
+ * If all the devices are In_sync, then it is the raid set
+ * that is being initialized.
*/
+ struct md_rdev *rdev;
+
set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags);
rdev_for_each(rdev, mddev)
if (!test_bit(Journal, &rdev->flags) &&
@@ -3512,7 +3511,7 @@ static void raid_status(struct dm_target *ti, status_type_t type,
unsigned int rebuild_disks;
unsigned int write_mostly_params = 0;
sector_t progress, resync_max_sectors, resync_mismatches;
- const char *sync_action;
+ enum sync_state state;
struct raid_type *rt;
switch (type) {
@@ -3526,14 +3525,14 @@ static void raid_status(struct dm_target *ti, status_type_t type,
/* Access most recent mddev properties for status output */
smp_rmb();
- recovery = rs->md.recovery;
/* Get sensible max sectors even if raid set not yet started */
resync_max_sectors = test_bit(RT_FLAG_RS_PRERESUMED, &rs->runtime_flags) ?
mddev->resync_max_sectors : mddev->dev_sectors;
- progress = rs_get_progress(rs, recovery, resync_max_sectors);
+ recovery = rs->md.recovery;
+ state = decipher_sync_action(mddev, recovery);
+ progress = rs_get_progress(rs, recovery, state, resync_max_sectors);
resync_mismatches = (mddev->last_sync_action && !strcasecmp(mddev->last_sync_action, "check")) ?
atomic64_read(&mddev->resync_mismatches) : 0;
- sync_action = sync_str(decipher_sync_action(&rs->md, recovery));
/* HM FIXME: do we want another state char for raid0? It shows 'D'/'A'/'-' now */
for (i = 0; i < rs->raid_disks; i++)
@@ -3561,7 +3560,7 @@ static void raid_status(struct dm_target *ti, status_type_t type,
* See Documentation/admin-guide/device-mapper/dm-raid.rst for
* information on each of these states.
*/
- DMEMIT(" %s", sync_action);
+ DMEMIT(" %s", sync_str(state));
/*
* v1.5.0+:
@@ -3955,11 +3954,22 @@ static int raid_preresume(struct dm_target *ti)
if (r)
return r;
- /* Resize bitmap to adjust to changed region size (aka MD bitmap chunksize) */
- if (test_bit(RT_FLAG_RS_BITMAP_LOADED, &rs->runtime_flags) && mddev->bitmap &&
- mddev->bitmap_info.chunksize != to_bytes(rs->requested_bitmap_chunk_sectors)) {
- r = md_bitmap_resize(mddev->bitmap, mddev->dev_sectors,
- to_bytes(rs->requested_bitmap_chunk_sectors), 0);
+ /* We are extending the raid set size, adjust mddev/md_rdev sizes and set capacity. */
+ if (test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags)) {
+ mddev->array_sectors = rs->array_sectors;
+ mddev->dev_sectors = rs->dev_sectors;
+ rs_set_rdev_sectors(rs);
+ rs_set_capacity(rs);
+ }
+
+ /* Resize bitmap to adjust to changed region size (aka MD bitmap chunksize) or grown device size */
+ if (test_bit(RT_FLAG_RS_BITMAP_LOADED, &rs->runtime_flags) && mddev->bitmap &&
+ (test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags) ||
+ (rs->requested_bitmap_chunk_sectors &&
+ mddev->bitmap_info.chunksize != to_bytes(rs->requested_bitmap_chunk_sectors)))) {
+ int chunksize = to_bytes(rs->requested_bitmap_chunk_sectors) ?: mddev->bitmap_info.chunksize;
+
+ r = md_bitmap_resize(mddev->bitmap, mddev->dev_sectors, chunksize, 0);
if (r)
DMERR("Failed to resize bitmap");
}
@@ -3968,8 +3978,10 @@ static int raid_preresume(struct dm_target *ti)
/* Be prepared for mddev_resume() in raid_resume() */
set_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
if (mddev->recovery_cp && mddev->recovery_cp < MaxSector) {
- set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ set_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
mddev->resync_min = mddev->recovery_cp;
+ if (test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags))
+ mddev->resync_max_sectors = mddev->dev_sectors;
}
/* Check for any reshape request unless new raid set */
@@ -4017,7 +4029,7 @@ static void raid_resume(struct dm_target *ti)
static struct target_type raid_target = {
.name = "raid",
- .version = {1, 14, 0},
+ .version = {1, 15, 0},
.module = THIS_MODULE,
.ctr = raid_ctr,
.dtr = raid_dtr,
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 8547d7594338..63bbcc20f49a 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -55,19 +55,6 @@ static void trigger_event(struct work_struct *work)
dm_table_event(sc->ti->table);
}
-static inline struct stripe_c *alloc_context(unsigned int stripes)
-{
- size_t len;
-
- if (dm_array_too_big(sizeof(struct stripe_c), sizeof(struct stripe),
- stripes))
- return NULL;
-
- len = sizeof(struct stripe_c) + (sizeof(struct stripe) * stripes);
-
- return kmalloc(len, GFP_KERNEL);
-}
-
/*
* Parse a single <dev> <sector> pair
*/
@@ -142,7 +129,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv)
return -EINVAL;
}
- sc = alloc_context(stripes);
+ sc = kmalloc(struct_size(sc, stripe, stripes), GFP_KERNEL);
if (!sc) {
ti->error = "Memory allocation for striped context "
"failed";
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 52e049554f5c..2ae0c1913766 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -918,21 +918,15 @@ bool dm_table_supports_dax(struct dm_table *t,
static bool dm_table_does_not_support_partial_completion(struct dm_table *t);
-struct verify_rq_based_data {
- unsigned sq_count;
- unsigned mq_count;
-};
-
-static int device_is_rq_based(struct dm_target *ti, struct dm_dev *dev,
- sector_t start, sector_t len, void *data)
+static int device_is_rq_stackable(struct dm_target *ti, struct dm_dev *dev,
+ sector_t start, sector_t len, void *data)
{
- struct request_queue *q = bdev_get_queue(dev->bdev);
- struct verify_rq_based_data *v = data;
+ struct block_device *bdev = dev->bdev;
+ struct request_queue *q = bdev_get_queue(bdev);
- if (queue_is_mq(q))
- v->mq_count++;
- else
- v->sq_count++;
+ /* request-based cannot stack on partitions! */
+ if (bdev != bdev->bd_contains)
+ return false;
return queue_is_mq(q);
}
@@ -941,7 +935,6 @@ static int dm_table_determine_type(struct dm_table *t)
{
unsigned i;
unsigned bio_based = 0, request_based = 0, hybrid = 0;
- struct verify_rq_based_data v = {.sq_count = 0, .mq_count = 0};
struct dm_target *tgt;
struct list_head *devices = dm_table_get_devices(t);
enum dm_queue_mode live_md_type = dm_get_md_type(t->md);
@@ -1045,14 +1038,10 @@ verify_rq_based:
/* Non-request-stackable devices can't be used for request-based dm */
if (!tgt->type->iterate_devices ||
- !tgt->type->iterate_devices(tgt, device_is_rq_based, &v)) {
+ !tgt->type->iterate_devices(tgt, device_is_rq_stackable, NULL)) {
DMERR("table load rejected: including non-request-stackable devices");
return -EINVAL;
}
- if (v.sq_count > 0) {
- DMERR("table load rejected: not all devices are blk-mq request-stackable");
- return -EINVAL;
- }
return 0;
}
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index fcd887703f95..5a2c494cb552 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -609,13 +609,12 @@ static void error_thin_bio_list(struct thin_c *tc, struct bio_list *master,
blk_status_t error)
{
struct bio_list bios;
- unsigned long flags;
bio_list_init(&bios);
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
__merge_bio_list(&bios, master);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
error_bio_list(&bios, error);
}
@@ -623,15 +622,14 @@ static void error_thin_bio_list(struct thin_c *tc, struct bio_list *master,
static void requeue_deferred_cells(struct thin_c *tc)
{
struct pool *pool = tc->pool;
- unsigned long flags;
struct list_head cells;
struct dm_bio_prison_cell *cell, *tmp;
INIT_LIST_HEAD(&cells);
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
list_splice_init(&tc->deferred_cells, &cells);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
list_for_each_entry_safe(cell, tmp, &cells, user_list)
cell_requeue(pool, cell);
@@ -640,14 +638,13 @@ static void requeue_deferred_cells(struct thin_c *tc)
static void requeue_io(struct thin_c *tc)
{
struct bio_list bios;
- unsigned long flags;
bio_list_init(&bios);
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
__merge_bio_list(&bios, &tc->deferred_bio_list);
__merge_bio_list(&bios, &tc->retry_on_resume_list);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
error_bio_list(&bios, BLK_STS_DM_REQUEUE);
requeue_deferred_cells(tc);
@@ -756,7 +753,6 @@ static void inc_all_io_entry(struct pool *pool, struct bio *bio)
static void issue(struct thin_c *tc, struct bio *bio)
{
struct pool *pool = tc->pool;
- unsigned long flags;
if (!bio_triggers_commit(tc, bio)) {
generic_make_request(bio);
@@ -777,9 +773,9 @@ static void issue(struct thin_c *tc, struct bio *bio)
* Batch together any bios that trigger commits and then issue a
* single commit for them in process_deferred_bios().
*/
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
bio_list_add(&pool->deferred_flush_bios, bio);
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
}
static void remap_to_origin_and_issue(struct thin_c *tc, struct bio *bio)
@@ -886,12 +882,15 @@ static void cell_defer_no_holder(struct thin_c *tc, struct dm_bio_prison_cell *c
{
struct pool *pool = tc->pool;
unsigned long flags;
+ int has_work;
spin_lock_irqsave(&tc->lock, flags);
cell_release_no_holder(pool, cell, &tc->deferred_bio_list);
+ has_work = !bio_list_empty(&tc->deferred_bio_list);
spin_unlock_irqrestore(&tc->lock, flags);
- wake_worker(pool);
+ if (has_work)
+ wake_worker(pool);
}
static void thin_defer_bio(struct thin_c *tc, struct bio *bio);
@@ -960,7 +959,6 @@ static void process_prepared_mapping_fail(struct dm_thin_new_mapping *m)
static void complete_overwrite_bio(struct thin_c *tc, struct bio *bio)
{
struct pool *pool = tc->pool;
- unsigned long flags;
/*
* If the bio has the REQ_FUA flag set we must commit the metadata
@@ -985,9 +983,9 @@ static void complete_overwrite_bio(struct thin_c *tc, struct bio *bio)
* Batch together any bios that trigger commits and then issue a
* single commit for them in process_deferred_bios().
*/
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
bio_list_add(&pool->deferred_flush_completions, bio);
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
}
static void process_prepared_mapping(struct dm_thin_new_mapping *m)
@@ -1226,14 +1224,13 @@ static void process_prepared_discard_passdown_pt2(struct dm_thin_new_mapping *m)
static void process_prepared(struct pool *pool, struct list_head *head,
process_mapping_fn *fn)
{
- unsigned long flags;
struct list_head maps;
struct dm_thin_new_mapping *m, *tmp;
INIT_LIST_HEAD(&maps);
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
list_splice_init(head, &maps);
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
list_for_each_entry_safe(m, tmp, &maps, list)
(*fn)(m);
@@ -1510,14 +1507,12 @@ static int commit(struct pool *pool)
static void check_low_water_mark(struct pool *pool, dm_block_t free_blocks)
{
- unsigned long flags;
-
if (free_blocks <= pool->low_water_blocks && !pool->low_water_triggered) {
DMWARN("%s: reached low water mark for data device: sending event.",
dm_device_name(pool->pool_md));
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
pool->low_water_triggered = true;
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
dm_table_event(pool->ti->table);
}
}
@@ -1593,11 +1588,10 @@ static void retry_on_resume(struct bio *bio)
{
struct dm_thin_endio_hook *h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));
struct thin_c *tc = h->tc;
- unsigned long flags;
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
bio_list_add(&tc->retry_on_resume_list, bio);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
}
static blk_status_t should_error_unserviceable_bio(struct pool *pool)
@@ -2170,7 +2164,6 @@ static void __sort_thin_deferred_bios(struct thin_c *tc)
static void process_thin_deferred_bios(struct thin_c *tc)
{
struct pool *pool = tc->pool;
- unsigned long flags;
struct bio *bio;
struct bio_list bios;
struct blk_plug plug;
@@ -2184,10 +2177,10 @@ static void process_thin_deferred_bios(struct thin_c *tc)
bio_list_init(&bios);
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
if (bio_list_empty(&tc->deferred_bio_list)) {
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
return;
}
@@ -2196,7 +2189,7 @@ static void process_thin_deferred_bios(struct thin_c *tc)
bio_list_merge(&bios, &tc->deferred_bio_list);
bio_list_init(&tc->deferred_bio_list);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
blk_start_plug(&plug);
while ((bio = bio_list_pop(&bios))) {
@@ -2206,10 +2199,10 @@ static void process_thin_deferred_bios(struct thin_c *tc)
* prepared mappings to process.
*/
if (ensure_next_mapping(pool)) {
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
bio_list_add(&tc->deferred_bio_list, bio);
bio_list_merge(&tc->deferred_bio_list, &bios);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
break;
}
@@ -2264,16 +2257,15 @@ static unsigned sort_cells(struct pool *pool, struct list_head *cells)
static void process_thin_deferred_cells(struct thin_c *tc)
{
struct pool *pool = tc->pool;
- unsigned long flags;
struct list_head cells;
struct dm_bio_prison_cell *cell;
unsigned i, j, count;
INIT_LIST_HEAD(&cells);
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
list_splice_init(&tc->deferred_cells, &cells);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
if (list_empty(&cells))
return;
@@ -2294,9 +2286,9 @@ static void process_thin_deferred_cells(struct thin_c *tc)
for (j = i; j < count; j++)
list_add(&pool->cell_sort_array[j]->user_list, &cells);
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
list_splice(&cells, &tc->deferred_cells);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
return;
}
@@ -2349,7 +2341,6 @@ static struct thin_c *get_next_thin(struct pool *pool, struct thin_c *tc)
static void process_deferred_bios(struct pool *pool)
{
- unsigned long flags;
struct bio *bio;
struct bio_list bios, bio_completions;
struct thin_c *tc;
@@ -2368,13 +2359,13 @@ static void process_deferred_bios(struct pool *pool)
bio_list_init(&bios);
bio_list_init(&bio_completions);
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
bio_list_merge(&bios, &pool->deferred_flush_bios);
bio_list_init(&pool->deferred_flush_bios);
bio_list_merge(&bio_completions, &pool->deferred_flush_completions);
bio_list_init(&pool->deferred_flush_completions);
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
if (bio_list_empty(&bios) && bio_list_empty(&bio_completions) &&
!(dm_pool_changed_this_transaction(pool->pmd) && need_commit_due_to_time(pool)))
@@ -2657,12 +2648,11 @@ static void metadata_operation_failed(struct pool *pool, const char *op, int r)
*/
static void thin_defer_bio(struct thin_c *tc, struct bio *bio)
{
- unsigned long flags;
struct pool *pool = tc->pool;
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
bio_list_add(&tc->deferred_bio_list, bio);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
wake_worker(pool);
}
@@ -2678,13 +2668,12 @@ static void thin_defer_bio_with_throttle(struct thin_c *tc, struct bio *bio)
static void thin_defer_cell(struct thin_c *tc, struct dm_bio_prison_cell *cell)
{
- unsigned long flags;
struct pool *pool = tc->pool;
throttle_lock(&pool->throttle);
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
list_add_tail(&cell->user_list, &tc->deferred_cells);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
throttle_unlock(&pool->throttle);
wake_worker(pool);
@@ -2810,15 +2799,14 @@ static int pool_is_congested(struct dm_target_callbacks *cb, int bdi_bits)
static void requeue_bios(struct pool *pool)
{
- unsigned long flags;
struct thin_c *tc;
rcu_read_lock();
list_for_each_entry_rcu(tc, &pool->active_thins, list) {
- spin_lock_irqsave(&tc->lock, flags);
+ spin_lock_irq(&tc->lock);
bio_list_merge(&tc->deferred_bio_list, &tc->retry_on_resume_list);
bio_list_init(&tc->retry_on_resume_list);
- spin_unlock_irqrestore(&tc->lock, flags);
+ spin_unlock_irq(&tc->lock);
}
rcu_read_unlock();
}
@@ -3412,15 +3400,14 @@ static int pool_map(struct dm_target *ti, struct bio *bio)
int r;
struct pool_c *pt = ti->private;
struct pool *pool = pt->pool;
- unsigned long flags;
/*
* As this is a singleton target, ti->begin is always zero.
*/
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
bio_set_dev(bio, pt->data_dev->bdev);
r = DM_MAPIO_REMAPPED;
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
return r;
}
@@ -3591,7 +3578,6 @@ static void pool_resume(struct dm_target *ti)
{
struct pool_c *pt = ti->private;
struct pool *pool = pt->pool;
- unsigned long flags;
/*
* Must requeue active_thins' bios and then resume
@@ -3600,10 +3586,10 @@ static void pool_resume(struct dm_target *ti)
requeue_bios(pool);
pool_resume_active_thins(pool);
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
pool->low_water_triggered = false;
pool->suspended = false;
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
do_waker(&pool->waker.work);
}
@@ -3612,11 +3598,10 @@ static void pool_presuspend(struct dm_target *ti)
{
struct pool_c *pt = ti->private;
struct pool *pool = pt->pool;
- unsigned long flags;
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
pool->suspended = true;
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
pool_suspend_active_thins(pool);
}
@@ -3625,13 +3610,12 @@ static void pool_presuspend_undo(struct dm_target *ti)
{
struct pool_c *pt = ti->private;
struct pool *pool = pt->pool;
- unsigned long flags;
pool_resume_active_thins(pool);
- spin_lock_irqsave(&pool->lock, flags);
+ spin_lock_irq(&pool->lock);
pool->suspended = false;
- spin_unlock_irqrestore(&pool->lock, flags);
+ spin_unlock_irq(&pool->lock);
}
static void pool_postsuspend(struct dm_target *ti)
@@ -4110,11 +4094,10 @@ static void thin_put(struct thin_c *tc)
static void thin_dtr(struct dm_target *ti)
{
struct thin_c *tc = ti->private;
- unsigned long flags;
- spin_lock_irqsave(&tc->pool->lock, flags);
+ spin_lock_irq(&tc->pool->lock);
list_del_rcu(&tc->list);
- spin_unlock_irqrestore(&tc->pool->lock, flags);
+ spin_unlock_irq(&tc->pool->lock);
synchronize_rcu();
thin_put(tc);
@@ -4150,7 +4133,6 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
struct thin_c *tc;
struct dm_dev *pool_dev, *origin_dev;
struct mapped_device *pool_md;
- unsigned long flags;
mutex_lock(&dm_thin_pool_table.mutex);
@@ -4244,9 +4226,9 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
mutex_unlock(&dm_thin_pool_table.mutex);
- spin_lock_irqsave(&tc->pool->lock, flags);
+ spin_lock_irq(&tc->pool->lock);
if (tc->pool->suspended) {
- spin_unlock_irqrestore(&tc->pool->lock, flags);
+ spin_unlock_irq(&tc->pool->lock);
mutex_lock(&dm_thin_pool_table.mutex); /* reacquire for __pool_dec */
ti->error = "Unable to activate thin device while pool is suspended";
r = -EINVAL;
@@ -4255,7 +4237,7 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
refcount_set(&tc->refcount, 1);
init_completion(&tc->can_destroy);
list_add_tail_rcu(&tc->list, &tc->pool->active_thins);
- spin_unlock_irqrestore(&tc->pool->lock, flags);
+ spin_unlock_irq(&tc->pool->lock);
/*
* This synchronize_rcu() call is needed here otherwise we risk a
* wake_worker() call finding no bios to process (because the newly
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index d06b8aa41e26..7d727a72aa13 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -1218,7 +1218,8 @@ bio_copy:
}
} while (bio->bi_iter.bi_size);
- if (unlikely(wc->uncommitted_blocks >= wc->autocommit_blocks))
+ if (unlikely(bio->bi_opf & REQ_FUA ||
+ wc->uncommitted_blocks >= wc->autocommit_blocks))
writecache_flush(wc);
else
writecache_schedule_autocommit(wc);
@@ -1561,7 +1562,7 @@ static void writecache_writeback(struct work_struct *work)
{
struct dm_writecache *wc = container_of(work, struct dm_writecache, writeback_work);
struct blk_plug plug;
- struct wc_entry *f, *g, *e = NULL;
+ struct wc_entry *f, *uninitialized_var(g), *e = NULL;
struct rb_node *node, *next_node;
struct list_head skipped;
struct writeback_list wbl;
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 069e4675da6b..22b3cb0050a7 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -554,6 +554,7 @@ static struct dmz_mblock *dmz_get_mblock(struct dmz_metadata *zmd,
TASK_UNINTERRUPTIBLE);
if (test_bit(DMZ_META_ERROR, &mblk->state)) {
dmz_release_mblock(zmd, mblk);
+ dmz_check_bdev(zmd->dev);
return ERR_PTR(-EIO);
}
@@ -625,6 +626,8 @@ static int dmz_rdwr_block(struct dmz_metadata *zmd, int op, sector_t block,
ret = submit_bio_wait(bio);
bio_put(bio);
+ if (ret)
+ dmz_check_bdev(zmd->dev);
return ret;
}
@@ -691,6 +694,7 @@ static int dmz_write_dirty_mblocks(struct dmz_metadata *zmd,
TASK_UNINTERRUPTIBLE);
if (test_bit(DMZ_META_ERROR, &mblk->state)) {
clear_bit(DMZ_META_ERROR, &mblk->state);
+ dmz_check_bdev(zmd->dev);
ret = -EIO;
}
nr_mblks_submitted--;
@@ -768,7 +772,7 @@ int dmz_flush_metadata(struct dmz_metadata *zmd)
/* If there are no dirty metadata blocks, just flush the device cache */
if (list_empty(&write_list)) {
ret = blkdev_issue_flush(zmd->dev->bdev, GFP_NOIO, NULL);
- goto out;
+ goto err;
}
/*
@@ -778,7 +782,7 @@ int dmz_flush_metadata(struct dmz_metadata *zmd)
*/
ret = dmz_log_dirty_mblocks(zmd, &write_list);
if (ret)
- goto out;
+ goto err;
/*
* The log is on disk. It is now safe to update in place
@@ -786,11 +790,11 @@ int dmz_flush_metadata(struct dmz_metadata *zmd)
*/
ret = dmz_write_dirty_mblocks(zmd, &write_list, zmd->mblk_primary);
if (ret)
- goto out;
+ goto err;
ret = dmz_write_sb(zmd, zmd->mblk_primary);
if (ret)
- goto out;
+ goto err;
while (!list_empty(&write_list)) {
mblk = list_first_entry(&write_list, struct dmz_mblock, link);
@@ -805,16 +809,20 @@ int dmz_flush_metadata(struct dmz_metadata *zmd)
zmd->sb_gen++;
out:
- if (ret && !list_empty(&write_list)) {
- spin_lock(&zmd->mblk_lock);
- list_splice(&write_list, &zmd->mblk_dirty_list);
- spin_unlock(&zmd->mblk_lock);
- }
-
dmz_unlock_flush(zmd);
up_write(&zmd->mblk_sem);
return ret;
+
+err:
+ if (!list_empty(&write_list)) {
+ spin_lock(&zmd->mblk_lock);
+ list_splice(&write_list, &zmd->mblk_dirty_list);
+ spin_unlock(&zmd->mblk_lock);
+ }
+ if (!dmz_check_bdev(zmd->dev))
+ ret = -EIO;
+ goto out;
}
/*
@@ -1221,6 +1229,7 @@ static int dmz_update_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
if (ret < 0) {
dmz_dev_err(zmd->dev, "Get zone %u report failed",
dmz_id(zmd, zone));
+ dmz_check_bdev(zmd->dev);
return ret;
}
diff --git a/drivers/md/dm-zoned-reclaim.c b/drivers/md/dm-zoned-reclaim.c
index d240d7ca8a8a..e7ace908a9b7 100644
--- a/drivers/md/dm-zoned-reclaim.c
+++ b/drivers/md/dm-zoned-reclaim.c
@@ -82,6 +82,7 @@ static int dmz_reclaim_align_wp(struct dmz_reclaim *zrc, struct dm_zone *zone,
"Align zone %u wp %llu to %llu (wp+%u) blocks failed %d",
dmz_id(zmd, zone), (unsigned long long)wp_block,
(unsigned long long)block, nr_blocks, ret);
+ dmz_check_bdev(zrc->dev);
return ret;
}
@@ -489,12 +490,7 @@ static void dmz_reclaim_work(struct work_struct *work)
ret = dmz_do_reclaim(zrc);
if (ret) {
dmz_dev_debug(zrc->dev, "Reclaim error %d\n", ret);
- if (ret == -EIO)
- /*
- * LLD might be performing some error handling sequence
- * at the underlying device. To not interfere, do not
- * attempt to schedule the next reclaim run immediately.
- */
+ if (!dmz_check_bdev(zrc->dev))
return;
}
diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c
index d3bcc4197f5d..4574e0dedbd6 100644
--- a/drivers/md/dm-zoned-target.c
+++ b/drivers/md/dm-zoned-target.c
@@ -80,6 +80,8 @@ static inline void dmz_bio_endio(struct bio *bio, blk_status_t status)
if (status != BLK_STS_OK && bio->bi_status == BLK_STS_OK)
bio->bi_status = status;
+ if (bio->bi_status != BLK_STS_OK)
+ bioctx->target->dev->flags |= DMZ_CHECK_BDEV;
if (refcount_dec_and_test(&bioctx->ref)) {
struct dm_zone *zone = bioctx->zone;
@@ -565,32 +567,52 @@ out:
}
/*
- * Check the backing device availability. If it's on the way out,
+ * Check if the backing device is being removed. If it's on the way out,
* start failing I/O. Reclaim and metadata components also call this
* function to cleanly abort operation in the event of such failure.
*/
bool dmz_bdev_is_dying(struct dmz_dev *dmz_dev)
{
- struct gendisk *disk;
+ if (dmz_dev->flags & DMZ_BDEV_DYING)
+ return true;
- if (!(dmz_dev->flags & DMZ_BDEV_DYING)) {
- disk = dmz_dev->bdev->bd_disk;
- if (blk_queue_dying(bdev_get_queue(dmz_dev->bdev))) {
- dmz_dev_warn(dmz_dev, "Backing device queue dying");
- dmz_dev->flags |= DMZ_BDEV_DYING;
- } else if (disk->fops->check_events) {
- if (disk->fops->check_events(disk, 0) &
- DISK_EVENT_MEDIA_CHANGE) {
- dmz_dev_warn(dmz_dev, "Backing device offline");
- dmz_dev->flags |= DMZ_BDEV_DYING;
- }
- }
+ if (dmz_dev->flags & DMZ_CHECK_BDEV)
+ return !dmz_check_bdev(dmz_dev);
+
+ if (blk_queue_dying(bdev_get_queue(dmz_dev->bdev))) {
+ dmz_dev_warn(dmz_dev, "Backing device queue dying");
+ dmz_dev->flags |= DMZ_BDEV_DYING;
}
return dmz_dev->flags & DMZ_BDEV_DYING;
}
/*
+ * Check the backing device availability. This detects such events as
+ * backing device going offline due to errors, media removals, etc.
+ * This check is less efficient than dmz_bdev_is_dying() and should
+ * only be performed as a part of error handling.
+ */
+bool dmz_check_bdev(struct dmz_dev *dmz_dev)
+{
+ struct gendisk *disk;
+
+ dmz_dev->flags &= ~DMZ_CHECK_BDEV;
+
+ if (dmz_bdev_is_dying(dmz_dev))
+ return false;
+
+ disk = dmz_dev->bdev->bd_disk;
+ if (disk->fops->check_events &&
+ disk->fops->check_events(disk, 0) & DISK_EVENT_MEDIA_CHANGE) {
+ dmz_dev_warn(dmz_dev, "Backing device offline");
+ dmz_dev->flags |= DMZ_BDEV_DYING;
+ }
+
+ return !(dmz_dev->flags & DMZ_BDEV_DYING);
+}
+
+/*
* Process a new BIO.
*/
static int dmz_map(struct dm_target *ti, struct bio *bio)
@@ -902,8 +924,8 @@ static int dmz_prepare_ioctl(struct dm_target *ti, struct block_device **bdev)
{
struct dmz_target *dmz = ti->private;
- if (dmz_bdev_is_dying(dmz->dev))
- return -ENODEV;
+ if (!dmz_check_bdev(dmz->dev))
+ return -EIO;
*bdev = dmz->dev->bdev;
diff --git a/drivers/md/dm-zoned.h b/drivers/md/dm-zoned.h
index d8e70b0ade35..5b5e493d479c 100644
--- a/drivers/md/dm-zoned.h
+++ b/drivers/md/dm-zoned.h
@@ -72,6 +72,7 @@ struct dmz_dev {
/* Device flags. */
#define DMZ_BDEV_DYING (1 << 0)
+#define DMZ_CHECK_BDEV (2 << 0)
/*
* Zone descriptor.
@@ -255,5 +256,6 @@ void dmz_schedule_reclaim(struct dmz_reclaim *zrc);
* Functions defined in dm-zoned-target.c
*/
bool dmz_bdev_is_dying(struct dmz_dev *dmz_dev);
+bool dmz_check_bdev(struct dmz_dev *dmz_dev);
#endif /* DM_ZONED_H */
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index a164cc81b710..475668c69dbc 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -608,9 +608,6 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size);
*/
#define dm_round_up(n, sz) (dm_div_up((n), (sz)) * (sz))
-#define dm_array_too_big(fixed, obj, num) \
- ((num) > (UINT_MAX - (fixed)) / (obj))
-
/*
* Sector offset taken relative to the start of the target instead of
* relative to the start of the device.