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for-6.3-rc3-tag

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Merge tag 'for-6.3-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "A few more fixes, the zoned accounting fix is spread across a few
  patches, preparatory and the actual fixes:

   - zoned mode:
      - fix accounting of unusable zone space
      - fix zone activation condition for DUP profile
      - preparatory patches

   - improved error handling of missing chunks

   - fix compiler warning"

* tag 'for-6.3-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: zoned: drop space_info->active_total_bytes
  btrfs: zoned: count fresh BG region as zone unusable
  btrfs: use temporary variable for space_info in btrfs_update_block_group
  btrfs: rename BTRFS_FS_NO_OVERCOMMIT to BTRFS_FS_ACTIVE_ZONE_TRACKING
  btrfs: zoned: fix btrfs_can_activate_zone() to support DUP profile
  btrfs: fix compiler warning on SPARC/PA-RISC handling fscrypt_setup_filename
  btrfs: handle missing chunk mapping more gracefully
This commit is contained in:
Linus Torvalds 2023-03-24 08:32:10 -07:00
commit 285063049a
8 changed files with 71 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
fs/btrfs/block-group.c
View File

@ -1175,14 +1175,8 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
< block_group->zone_unusable);
WARN_ON(block_group->space_info->disk_total
< block_group->length * factor);
WARN_ON(test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE,
&block_group->runtime_flags) &&
block_group->space_info->active_total_bytes
< block_group->length);
}
block_group->space_info->total_bytes -= block_group->length;
if (test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags))
block_group->space_info->active_total_bytes -= block_group->length;
block_group->space_info->bytes_readonly -=
(block_group->length - block_group->zone_unusable);
block_group->space_info->bytes_zone_unusable -=
@ -3476,6 +3470,7 @@ int btrfs_update_block_group(struct btrfs_trans_handle *trans,
spin_unlock(&info->delalloc_root_lock);
while (total) {
struct btrfs_space_info *space_info;
bool reclaim = false;
cache = btrfs_lookup_block_group(info, bytenr);
@ -3483,6 +3478,7 @@ int btrfs_update_block_group(struct btrfs_trans_handle *trans,
ret = -ENOENT;
break;
}
space_info = cache->space_info;
factor = btrfs_bg_type_to_factor(cache->flags);
/*
@ -3497,7 +3493,7 @@ int btrfs_update_block_group(struct btrfs_trans_handle *trans,
byte_in_group = bytenr - cache->start;
WARN_ON(byte_in_group > cache->length);
spin_lock(&cache->space_info->lock);
spin_lock(&space_info->lock);
spin_lock(&cache->lock);
if (btrfs_test_opt(info, SPACE_CACHE) &&
@ -3510,24 +3506,24 @@ int btrfs_update_block_group(struct btrfs_trans_handle *trans,
old_val += num_bytes;
cache->used = old_val;
cache->reserved -= num_bytes;
cache->space_info->bytes_reserved -= num_bytes;
cache->space_info->bytes_used += num_bytes;
cache->space_info->disk_used += num_bytes * factor;
space_info->bytes_reserved -= num_bytes;
space_info->bytes_used += num_bytes;
space_info->disk_used += num_bytes * factor;
spin_unlock(&cache->lock);
spin_unlock(&cache->space_info->lock);
spin_unlock(&space_info->lock);
} else {
old_val -= num_bytes;
cache->used = old_val;
cache->pinned += num_bytes;
btrfs_space_info_update_bytes_pinned(info,
cache->space_info, num_bytes);
cache->space_info->bytes_used -= num_bytes;
cache->space_info->disk_used -= num_bytes * factor;
btrfs_space_info_update_bytes_pinned(info, space_info,
num_bytes);
space_info->bytes_used -= num_bytes;
space_info->disk_used -= num_bytes * factor;
reclaim = should_reclaim_block_group(cache, num_bytes);
spin_unlock(&cache->lock);
spin_unlock(&cache->space_info->lock);
spin_unlock(&space_info->lock);
set_extent_dirty(&trans->transaction->pinned_extents,
bytenr, bytenr + num_bytes - 1,

8
fs/btrfs/free-space-cache.c
View File

@ -2693,8 +2693,13 @@ static int __btrfs_add_free_space_zoned(struct btrfs_block_group *block_group,
bg_reclaim_threshold = READ_ONCE(sinfo->bg_reclaim_threshold);
spin_lock(&ctl->tree_lock);
/* Count initial region as zone_unusable until it gets activated. */
if (!used)
to_free = size;
else if (initial &&
test_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &block_group->fs_info->flags) &&
(block_group->flags & (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_SYSTEM)))
to_free = 0;
else if (initial)
to_free = block_group->zone_capacity;
else if (offset >= block_group->alloc_offset)
@ -2722,7 +2727,8 @@ static int __btrfs_add_free_space_zoned(struct btrfs_block_group *block_group,
reclaimable_unusable = block_group->zone_unusable -
(block_group->length - block_group->zone_capacity);
/* All the region is now unusable. Mark it as unused and reclaim */
if (block_group->zone_unusable == block_group->length) {
if (block_group->zone_unusable == block_group->length &&
block_group->alloc_offset) {
btrfs_mark_bg_unused(block_group);
} else if (bg_reclaim_threshold &&
reclaimable_unusable >=

7
fs/btrfs/fs.h
View File

@ -120,11 +120,8 @@ enum {
/* Indicate that we want to commit the transaction. */
BTRFS_FS_NEED_TRANS_COMMIT,
/*
* Indicate metadata over-commit is disabled. This is set when active
* zone tracking is needed.
*/
BTRFS_FS_NO_OVERCOMMIT,
/* This is set when active zone tracking is needed. */
BTRFS_FS_ACTIVE_ZONE_TRACKING,
/*
* Indicate if we have some features changed, this is mostly for

7
fs/btrfs/inode.c
View File

@ -5421,8 +5421,13 @@ static int btrfs_inode_by_name(struct btrfs_inode *dir, struct dentry *dentry,
return -ENOMEM;
ret = fscrypt_setup_filename(&dir->vfs_inode, &dentry->d_name, 1, &fname);
if (ret)
if (ret < 0)
goto out;
/*
* fscrypt_setup_filename() should never return a positive value, but
* gcc on sparc/parisc thinks it can, so assert that doesn't happen.
*/
ASSERT(ret == 0);
/* This needs to handle no-key deletions later on */

42
fs/btrfs/space-info.c
View File

@ -308,8 +308,6 @@ void btrfs_add_bg_to_space_info(struct btrfs_fs_info *info,
ASSERT(found);
spin_lock(&found->lock);
found->total_bytes += block_group->length;
if (test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags))
found->active_total_bytes += block_group->length;
found->disk_total += block_group->length * factor;
found->bytes_used += block_group->used;
found->disk_used += block_group->used * factor;
@ -379,22 +377,6 @@ static u64 calc_available_free_space(struct btrfs_fs_info *fs_info,
return avail;
}
static inline u64 writable_total_bytes(struct btrfs_fs_info *fs_info,
struct btrfs_space_info *space_info)
{
/*
* On regular filesystem, all total_bytes are always writable. On zoned
* filesystem, there may be a limitation imposed by max_active_zones.
* For metadata allocation, we cannot finish an existing active block
* group to avoid a deadlock. Thus, we need to consider only the active
* groups to be writable for metadata space.
*/
if (!btrfs_is_zoned(fs_info) || (space_info->flags & BTRFS_BLOCK_GROUP_DATA))
return space_info->total_bytes;
return space_info->active_total_bytes;
}
int btrfs_can_overcommit(struct btrfs_fs_info *fs_info,
struct btrfs_space_info *space_info, u64 bytes,
enum btrfs_reserve_flush_enum flush)
@ -407,13 +389,13 @@ int btrfs_can_overcommit(struct btrfs_fs_info *fs_info,
return 0;
used = btrfs_space_info_used(space_info, true);
if (test_bit(BTRFS_FS_NO_OVERCOMMIT, &fs_info->flags) &&
if (test_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &fs_info->flags) &&
(space_info->flags & BTRFS_BLOCK_GROUP_METADATA))
avail = 0;
else
avail = calc_available_free_space(fs_info, space_info, flush);
if (used + bytes < writable_total_bytes(fs_info, space_info) + avail)
if (used + bytes < space_info->total_bytes + avail)
return 1;
return 0;
}
@ -449,7 +431,7 @@ again:
ticket = list_first_entry(head, struct reserve_ticket, list);
/* Check and see if our ticket can be satisfied now. */
if ((used + ticket->bytes <= writable_total_bytes(fs_info, space_info)) ||
if ((used + ticket->bytes <= space_info->total_bytes) ||
btrfs_can_overcommit(fs_info, space_info, ticket->bytes,
flush)) {
btrfs_space_info_update_bytes_may_use(fs_info,
@ -829,7 +811,6 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_fs_info *fs_info,
{
u64 used;
u64 avail;
u64 total;
u64 to_reclaim = space_info->reclaim_size;
lockdep_assert_held(&space_info->lock);
@ -844,9 +825,8 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_fs_info *fs_info,
* space. If that's the case add in our overage so we make sure to put
* appropriate pressure on the flushing state machine.
*/
total = writable_total_bytes(fs_info, space_info);
if (total + avail < used)
to_reclaim += used - (total + avail);
if (space_info->total_bytes + avail < used)
to_reclaim += used - (space_info->total_bytes + avail);
return to_reclaim;
}
@ -856,11 +836,10 @@ static bool need_preemptive_reclaim(struct btrfs_fs_info *fs_info,
{
u64 global_rsv_size = fs_info->global_block_rsv.reserved;
u64 ordered, delalloc;
u64 total = writable_total_bytes(fs_info, space_info);
u64 thresh;
u64 used;
thresh = mult_perc(total, 90);
thresh = mult_perc(space_info->total_bytes, 90);
lockdep_assert_held(&space_info->lock);
@ -923,8 +902,8 @@ static bool need_preemptive_reclaim(struct btrfs_fs_info *fs_info,
BTRFS_RESERVE_FLUSH_ALL);
used = space_info->bytes_used + space_info->bytes_reserved +
space_info->bytes_readonly + global_rsv_size;
if (used < total)
thresh += total - used;
if (used < space_info->total_bytes)
thresh += space_info->total_bytes - used;
thresh >>= space_info->clamp;
used = space_info->bytes_pinned;
@ -1651,7 +1630,7 @@ static int __reserve_bytes(struct btrfs_fs_info *fs_info,
* can_overcommit() to ensure we can overcommit to continue.
*/
if (!pending_tickets &&
((used + orig_bytes <= writable_total_bytes(fs_info, space_info)) ||
((used + orig_bytes <= space_info->total_bytes) ||
btrfs_can_overcommit(fs_info, space_info, orig_bytes, flush))) {
btrfs_space_info_update_bytes_may_use(fs_info, space_info,
orig_bytes);
@ -1665,8 +1644,7 @@ static int __reserve_bytes(struct btrfs_fs_info *fs_info,
*/
if (ret && unlikely(flush == BTRFS_RESERVE_FLUSH_EMERGENCY)) {
used = btrfs_space_info_used(space_info, false);
if (used + orig_bytes <=
writable_total_bytes(fs_info, space_info)) {
if (used + orig_bytes <= space_info->total_bytes) {
btrfs_space_info_update_bytes_may_use(fs_info, space_info,
orig_bytes);
ret = 0;

2
fs/btrfs/space-info.h
View File

@ -96,8 +96,6 @@ struct btrfs_space_info {
u64 bytes_may_use; /* number of bytes that may be used for
delalloc/allocations */
u64 bytes_readonly; /* total bytes that are read only */
/* Total bytes in the space, but only accounts active block groups. */
u64 active_total_bytes;
u64 bytes_zone_unusable; /* total bytes that are unusable until
resetting the device zone */

3
fs/btrfs/volumes.c
View File

@ -6363,7 +6363,8 @@ int __btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
ASSERT(op != BTRFS_MAP_DISCARD);
em = btrfs_get_chunk_map(fs_info, logical, *length);
ASSERT(!IS_ERR(em));
if (IS_ERR(em))
return PTR_ERR(em);
map = em->map_lookup;
data_stripes = nr_data_stripes(map);

45
fs/btrfs/zoned.c
View File

@ -524,8 +524,7 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache)
}
atomic_set(&zone_info->active_zones_left,
max_active_zones - nactive);
/* Overcommit does not work well with active zone tacking. */
set_bit(BTRFS_FS_NO_OVERCOMMIT, &fs_info->flags);
set_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &fs_info->flags);
}
/* Validate superblock log */
@ -1581,9 +1580,19 @@ void btrfs_calc_zone_unusable(struct btrfs_block_group *cache)
return;
WARN_ON(cache->bytes_super != 0);
unusable = (cache->alloc_offset - cache->used) +
(cache->length - cache->zone_capacity);
free = cache->zone_capacity - cache->alloc_offset;
/* Check for block groups never get activated */
if (test_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &cache->fs_info->flags) &&
cache->flags & (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_SYSTEM) &&
!test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &cache->runtime_flags) &&
cache->alloc_offset == 0) {
unusable = cache->length;
free = 0;
} else {
unusable = (cache->alloc_offset - cache->used) +
(cache->length - cache->zone_capacity);
free = cache->zone_capacity - cache->alloc_offset;
}
/* We only need ->free_space in ALLOC_SEQ block groups */
cache->cached = BTRFS_CACHE_FINISHED;
@ -1902,7 +1911,11 @@ bool btrfs_zone_activate(struct btrfs_block_group *block_group)
/* Successfully activated all the zones */
set_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags);
space_info->active_total_bytes += block_group->length;
WARN_ON(block_group->alloc_offset != 0);
if (block_group->zone_unusable == block_group->length) {
block_group->zone_unusable = block_group->length - block_group->zone_capacity;
space_info->bytes_zone_unusable -= block_group->zone_capacity;
}
spin_unlock(&block_group->lock);
btrfs_try_granting_tickets(fs_info, space_info);
spin_unlock(&space_info->lock);
@ -2086,11 +2099,21 @@ bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags)
if (!device->bdev)
continue;
if (!zinfo->max_active_zones ||
atomic_read(&zinfo->active_zones_left)) {
if (!zinfo->max_active_zones) {
ret = true;
break;
}
switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
case 0: /* single */
ret = (atomic_read(&zinfo->active_zones_left) >= 1);
break;
case BTRFS_BLOCK_GROUP_DUP:
ret = (atomic_read(&zinfo->active_zones_left) >= 2);
break;
}
if (ret)
break;
}
mutex_unlock(&fs_info->chunk_mutex);
@ -2256,7 +2279,7 @@ int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info)
u64 avail;
spin_lock(&block_group->lock);
if (block_group->reserved ||
if (block_group->reserved || block_group->alloc_offset == 0 ||
(block_group->flags & BTRFS_BLOCK_GROUP_SYSTEM)) {
spin_unlock(&block_group->lock);
continue;
@ -2293,10 +2316,6 @@ int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info,
if (!btrfs_is_zoned(fs_info) || (space_info->flags & BTRFS_BLOCK_GROUP_DATA))
return 0;
/* No more block groups to activate */
if (space_info->active_total_bytes == space_info->total_bytes)
return 0;
for (;;) {
int ret;
bool need_finish = false;