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Diffstat (limited to 'fs/btrfs/volumes.c')
-rw-r--r--fs/btrfs/volumes.c74
1 files changed, 39 insertions, 35 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 017b67daa3bb..c95f018d4a1e 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -242,6 +242,17 @@ static struct btrfs_device *__alloc_device(void)
if (!dev)
return ERR_PTR(-ENOMEM);
+ /*
+ * Preallocate a bio that's always going to be used for flushing device
+ * barriers and matches the device lifespan
+ */
+ dev->flush_bio = bio_alloc_bioset(GFP_KERNEL, 0, NULL);
+ if (!dev->flush_bio) {
+ kfree(dev);
+ return ERR_PTR(-ENOMEM);
+ }
+ bio_get(dev->flush_bio);
+
INIT_LIST_HEAD(&dev->dev_list);
INIT_LIST_HEAD(&dev->dev_alloc_list);
INIT_LIST_HEAD(&dev->resized_list);
@@ -838,6 +849,7 @@ static void __free_device(struct work_struct *work)
device = container_of(work, struct btrfs_device, rcu_work);
rcu_string_free(device->name);
+ bio_put(device->flush_bio);
kfree(device);
}
@@ -1353,15 +1365,13 @@ int find_free_dev_extent_start(struct btrfs_transaction *transaction,
int ret;
int slot;
struct extent_buffer *l;
- u64 min_search_start;
/*
* We don't want to overwrite the superblock on the drive nor any area
* used by the boot loader (grub for example), so we make sure to start
* at an offset of at least 1MB.
*/
- min_search_start = max(fs_info->alloc_start, 1024ull * 1024);
- search_start = max(search_start, min_search_start);
+ search_start = max_t(u64, search_start, SZ_1M);
path = btrfs_alloc_path();
if (!path)
@@ -2387,7 +2397,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
device->io_width = fs_info->sectorsize;
device->io_align = fs_info->sectorsize;
device->sector_size = fs_info->sectorsize;
- device->total_bytes = i_size_read(bdev->bd_inode);
+ device->total_bytes = round_down(i_size_read(bdev->bd_inode),
+ fs_info->sectorsize);
device->disk_total_bytes = device->total_bytes;
device->commit_total_bytes = device->total_bytes;
device->fs_info = fs_info;
@@ -2417,16 +2428,14 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
fs_info->fs_devices->total_devices++;
fs_info->fs_devices->total_rw_bytes += device->total_bytes;
- spin_lock(&fs_info->free_chunk_lock);
- fs_info->free_chunk_space += device->total_bytes;
- spin_unlock(&fs_info->free_chunk_lock);
+ atomic64_add(device->total_bytes, &fs_info->free_chunk_space);
if (!blk_queue_nonrot(q))
fs_info->fs_devices->rotating = 1;
tmp = btrfs_super_total_bytes(fs_info->super_copy);
btrfs_set_super_total_bytes(fs_info->super_copy,
- tmp + device->total_bytes);
+ round_down(tmp + device->total_bytes, fs_info->sectorsize));
tmp = btrfs_super_num_devices(fs_info->super_copy);
btrfs_set_super_num_devices(fs_info->super_copy, tmp + 1);
@@ -2574,7 +2583,7 @@ int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
goto error;
}
- name = rcu_string_strdup(device_path, GFP_NOFS);
+ name = rcu_string_strdup(device_path, GFP_KERNEL);
if (!name) {
kfree(device);
ret = -ENOMEM;
@@ -2689,6 +2698,8 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans,
if (!device->writeable)
return -EACCES;
+ new_size = round_down(new_size, fs_info->sectorsize);
+
mutex_lock(&fs_info->chunk_mutex);
old_total = btrfs_super_total_bytes(super_copy);
diff = new_size - device->total_bytes;
@@ -2701,7 +2712,8 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans,
fs_devices = fs_info->fs_devices;
- btrfs_set_super_total_bytes(super_copy, old_total + diff);
+ btrfs_set_super_total_bytes(super_copy,
+ round_down(old_total + diff, fs_info->sectorsize));
device->fs_devices->total_rw_bytes += diff;
btrfs_device_set_total_bytes(device, new_size);
@@ -2874,9 +2886,7 @@ int btrfs_remove_chunk(struct btrfs_trans_handle *trans,
mutex_lock(&fs_info->chunk_mutex);
btrfs_device_set_bytes_used(device,
device->bytes_used - dev_extent_len);
- spin_lock(&fs_info->free_chunk_lock);
- fs_info->free_chunk_space += dev_extent_len;
- spin_unlock(&fs_info->free_chunk_lock);
+ atomic64_add(dev_extent_len, &fs_info->free_chunk_space);
btrfs_clear_space_info_full(fs_info);
mutex_unlock(&fs_info->chunk_mutex);
}
@@ -4393,7 +4403,10 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size)
struct btrfs_super_block *super_copy = fs_info->super_copy;
u64 old_total = btrfs_super_total_bytes(super_copy);
u64 old_size = btrfs_device_get_total_bytes(device);
- u64 diff = old_size - new_size;
+ u64 diff;
+
+ new_size = round_down(new_size, fs_info->sectorsize);
+ diff = old_size - new_size;
if (device->is_tgtdev_for_dev_replace)
return -EINVAL;
@@ -4409,9 +4422,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size)
btrfs_device_set_total_bytes(device, new_size);
if (device->writeable) {
device->fs_devices->total_rw_bytes -= diff;
- spin_lock(&fs_info->free_chunk_lock);
- fs_info->free_chunk_space -= diff;
- spin_unlock(&fs_info->free_chunk_lock);
+ atomic64_sub(diff, &fs_info->free_chunk_space);
}
mutex_unlock(&fs_info->chunk_mutex);
@@ -4522,7 +4533,8 @@ again:
&fs_info->fs_devices->resized_devices);
WARN_ON(diff > old_total);
- btrfs_set_super_total_bytes(super_copy, old_total - diff);
+ btrfs_set_super_total_bytes(super_copy,
+ round_down(old_total - diff, fs_info->sectorsize));
mutex_unlock(&fs_info->chunk_mutex);
/* Now btrfs_update_device() will change the on-disk size. */
@@ -4535,9 +4547,7 @@ done:
btrfs_device_set_total_bytes(device, old_size);
if (device->writeable)
device->fs_devices->total_rw_bytes += diff;
- spin_lock(&fs_info->free_chunk_lock);
- fs_info->free_chunk_space += diff;
- spin_unlock(&fs_info->free_chunk_lock);
+ atomic64_add(diff, &fs_info->free_chunk_space);
mutex_unlock(&fs_info->chunk_mutex);
}
return ret;
@@ -4882,9 +4892,7 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
btrfs_device_set_bytes_used(map->stripes[i].dev, num_bytes);
}
- spin_lock(&info->free_chunk_lock);
- info->free_chunk_space -= (stripe_size * map->num_stripes);
- spin_unlock(&info->free_chunk_lock);
+ atomic64_sub(stripe_size * map->num_stripes, &info->free_chunk_space);
free_extent_map(em);
check_raid56_incompat_flag(info, type);
@@ -5029,20 +5037,19 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
static noinline int init_first_rw_device(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info)
{
- struct btrfs_root *extent_root = fs_info->extent_root;
u64 chunk_offset;
u64 sys_chunk_offset;
u64 alloc_profile;
int ret;
chunk_offset = find_next_chunk(fs_info);
- alloc_profile = btrfs_get_alloc_profile(extent_root, 0);
+ alloc_profile = btrfs_metadata_alloc_profile(fs_info);
ret = __btrfs_alloc_chunk(trans, chunk_offset, alloc_profile);
if (ret)
return ret;
sys_chunk_offset = find_next_chunk(fs_info);
- alloc_profile = btrfs_get_alloc_profile(fs_info->chunk_root, 0);
+ alloc_profile = btrfs_system_alloc_profile(fs_info);
ret = __btrfs_alloc_chunk(trans, sys_chunk_offset, alloc_profile);
return ret;
}
@@ -6266,10 +6273,9 @@ int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
continue;
}
- if (dev_nr < total_devs - 1) {
- bio = btrfs_bio_clone(first_bio, GFP_NOFS);
- BUG_ON(!bio); /* -ENOMEM */
- } else
+ if (dev_nr < total_devs - 1)
+ bio = btrfs_bio_clone(first_bio);
+ else
bio = first_bio;
submit_stripe_bio(bbio, bio, bbio->stripes[dev_nr].physical,
@@ -6684,10 +6690,8 @@ static int read_one_dev(struct btrfs_fs_info *fs_info,
device->in_fs_metadata = 1;
if (device->writeable && !device->is_tgtdev_for_dev_replace) {
device->fs_devices->total_rw_bytes += device->total_bytes;
- spin_lock(&fs_info->free_chunk_lock);
- fs_info->free_chunk_space += device->total_bytes -
- device->bytes_used;
- spin_unlock(&fs_info->free_chunk_lock);
+ atomic64_add(device->total_bytes - device->bytes_used,
+ &fs_info->free_chunk_space);
}
ret = 0;
return ret;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-28 17:49:18 +0000