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Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c95
1 files changed, 26 insertions, 69 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index b5ae7d3d1896..12540b6104b5 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -265,7 +265,7 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
function, line, errstr);
return;
}
- ACCESS_ONCE(trans->transaction->aborted) = errno;
+ WRITE_ONCE(trans->transaction->aborted, errno);
/* Wake up anybody who may be waiting on this transaction */
wake_up(&fs_info->transaction_wait);
wake_up(&fs_info->transaction_blocked_wait);
@@ -549,16 +549,19 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
case Opt_ssd:
btrfs_set_and_info(info, SSD,
"use ssd allocation scheme");
+ btrfs_clear_opt(info->mount_opt, NOSSD);
break;
case Opt_ssd_spread:
btrfs_set_and_info(info, SSD_SPREAD,
"use spread ssd allocation scheme");
btrfs_set_opt(info->mount_opt, SSD);
+ btrfs_clear_opt(info->mount_opt, NOSSD);
break;
case Opt_nossd:
btrfs_set_and_info(info, NOSSD,
"not using ssd allocation scheme");
btrfs_clear_opt(info->mount_opt, SSD);
+ btrfs_clear_opt(info->mount_opt, SSD_SPREAD);
break;
case Opt_barrier:
btrfs_clear_and_info(info, NOBARRIER,
@@ -598,18 +601,8 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
}
break;
case Opt_alloc_start:
- num = match_strdup(&args[0]);
- if (num) {
- mutex_lock(&info->chunk_mutex);
- info->alloc_start = memparse(num, NULL);
- mutex_unlock(&info->chunk_mutex);
- kfree(num);
- btrfs_info(info, "allocations start at %llu",
- info->alloc_start);
- } else {
- ret = -ENOMEM;
- goto out;
- }
+ btrfs_info(info,
+ "option alloc_start is obsolete, ignored");
break;
case Opt_acl:
#ifdef CONFIG_BTRFS_FS_POSIX_ACL
@@ -1114,7 +1107,7 @@ static int get_default_subvol_objectid(struct btrfs_fs_info *fs_info, u64 *objec
static int btrfs_fill_super(struct super_block *sb,
struct btrfs_fs_devices *fs_devices,
- void *data, int silent)
+ void *data)
{
struct inode *inode;
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
@@ -1133,6 +1126,13 @@ static int btrfs_fill_super(struct super_block *sb,
#endif
sb->s_flags |= MS_I_VERSION;
sb->s_iflags |= SB_I_CGROUPWB;
+
+ err = super_setup_bdi(sb);
+ if (err) {
+ btrfs_err(fs_info, "super_setup_bdi failed");
+ return err;
+ }
+
err = open_ctree(sb, fs_devices, (char *)data);
if (err) {
btrfs_err(fs_info, "open_ctree failed");
@@ -1154,7 +1154,6 @@ static int btrfs_fill_super(struct super_block *sb,
goto fail_close;
}
- save_mount_options(sb, data);
cleancache_init_fs(sb);
sb->s_flags |= MS_ACTIVE;
return 0;
@@ -1177,7 +1176,7 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
return 0;
}
- btrfs_wait_ordered_roots(fs_info, -1, 0, (u64)-1);
+ btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1);
trans = btrfs_attach_transaction_barrier(root);
if (IS_ERR(trans)) {
@@ -1222,8 +1221,6 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
seq_puts(seq, ",nobarrier");
if (info->max_inline != BTRFS_DEFAULT_MAX_INLINE)
seq_printf(seq, ",max_inline=%llu", info->max_inline);
- if (info->alloc_start != 0)
- seq_printf(seq, ",alloc_start=%llu", info->alloc_start);
if (info->thread_pool_size != min_t(unsigned long,
num_online_cpus() + 2, 8))
seq_printf(seq, ",thread_pool=%d", info->thread_pool_size);
@@ -1611,8 +1608,7 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
} else {
snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev);
btrfs_sb(s)->bdev_holder = fs_type;
- error = btrfs_fill_super(s, fs_devices, data,
- flags & MS_SILENT ? 1 : 0);
+ error = btrfs_fill_super(s, fs_devices, data);
}
if (error) {
deactivate_locked_super(s);
@@ -1707,7 +1703,6 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
unsigned long old_opts = fs_info->mount_opt;
unsigned long old_compress_type = fs_info->compress_type;
u64 old_max_inline = fs_info->max_inline;
- u64 old_alloc_start = fs_info->alloc_start;
int old_thread_pool_size = fs_info->thread_pool_size;
unsigned int old_metadata_ratio = fs_info->metadata_ratio;
int ret;
@@ -1786,8 +1781,7 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
}
if (fs_info->fs_devices->missing_devices >
- fs_info->num_tolerated_disk_barrier_failures &&
- !(*flags & MS_RDONLY)) {
+ fs_info->num_tolerated_disk_barrier_failures) {
btrfs_warn(fs_info,
"too many missing devices, writeable remount is not allowed");
ret = -EACCES;
@@ -1847,9 +1841,6 @@ restore:
fs_info->mount_opt = old_opts;
fs_info->compress_type = old_compress_type;
fs_info->max_inline = old_max_inline;
- mutex_lock(&fs_info->chunk_mutex);
- fs_info->alloc_start = old_alloc_start;
- mutex_unlock(&fs_info->chunk_mutex);
btrfs_resize_thread_pool(fs_info,
old_thread_pool_size, fs_info->thread_pool_size);
fs_info->metadata_ratio = old_metadata_ratio;
@@ -1890,18 +1881,15 @@ static inline void btrfs_descending_sort_devices(
static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,
u64 *free_bytes)
{
- struct btrfs_root *root = fs_info->tree_root;
struct btrfs_device_info *devices_info;
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *device;
u64 skip_space;
u64 type;
u64 avail_space;
- u64 used_space;
u64 min_stripe_size;
int min_stripes = 1, num_stripes = 1;
int i = 0, nr_devices;
- int ret;
/*
* We aren't under the device list lock, so this is racy-ish, but good
@@ -1919,12 +1907,12 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,
}
devices_info = kmalloc_array(nr_devices, sizeof(*devices_info),
- GFP_NOFS);
+ GFP_KERNEL);
if (!devices_info)
return -ENOMEM;
/* calc min stripe number for data space allocation */
- type = btrfs_get_alloc_profile(root, 1);
+ type = btrfs_data_alloc_profile(fs_info);
if (type & BTRFS_BLOCK_GROUP_RAID0) {
min_stripes = 2;
num_stripes = nr_devices;
@@ -1941,8 +1929,6 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,
else
min_stripe_size = BTRFS_STRIPE_LEN;
- if (fs_info->alloc_start)
- mutex_lock(&fs_devices->device_list_mutex);
rcu_read_lock();
list_for_each_entry_rcu(device, &fs_devices->devices, dev_list) {
if (!device->in_fs_metadata || !device->bdev ||
@@ -1965,34 +1951,6 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,
*/
skip_space = SZ_1M;
- /* user can set the offset in fs_info->alloc_start. */
- if (fs_info->alloc_start &&
- fs_info->alloc_start + BTRFS_STRIPE_LEN <=
- device->total_bytes) {
- rcu_read_unlock();
- skip_space = max(fs_info->alloc_start, skip_space);
-
- /*
- * btrfs can not use the free space in
- * [0, skip_space - 1], we must subtract it from the
- * total. In order to implement it, we account the used
- * space in this range first.
- */
- ret = btrfs_account_dev_extents_size(device, 0,
- skip_space - 1,
- &used_space);
- if (ret) {
- kfree(devices_info);
- mutex_unlock(&fs_devices->device_list_mutex);
- return ret;
- }
-
- rcu_read_lock();
-
- /* calc the free space in [0, skip_space - 1] */
- skip_space -= used_space;
- }
-
/*
* we can use the free space in [0, skip_space - 1], subtract
* it from the total.
@@ -2011,8 +1969,6 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,
i++;
}
rcu_read_unlock();
- if (fs_info->alloc_start)
- mutex_unlock(&fs_devices->device_list_mutex);
nr_devices = i;
@@ -2049,10 +2005,9 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,
* multiplier to scale the sizes.
*
* Unused device space usage is based on simulating the chunk allocator
- * algorithm that respects the device sizes, order of allocations and the
- * 'alloc_start' value, this is a close approximation of the actual use but
- * there are other factors that may change the result (like a new metadata
- * chunk).
+ * algorithm that respects the device sizes and order of allocations. This is
+ * a close approximation of the actual use but there are other factors that may
+ * change the result (like a new metadata chunk).
*
* If metadata is exhausted, f_bavail will be 0.
*/
@@ -2235,7 +2190,7 @@ static int btrfs_freeze(struct super_block *sb)
struct btrfs_fs_info *fs_info = btrfs_sb(sb);
struct btrfs_root *root = fs_info->tree_root;
- fs_info->fs_frozen = 1;
+ set_bit(BTRFS_FS_FROZEN, &fs_info->flags);
/*
* We don't need a barrier here, we'll wait for any transaction that
* could be in progress on other threads (and do delayed iputs that
@@ -2254,7 +2209,9 @@ static int btrfs_freeze(struct super_block *sb)
static int btrfs_unfreeze(struct super_block *sb)
{
- btrfs_sb(sb)->fs_frozen = 0;
+ struct btrfs_fs_info *fs_info = btrfs_sb(sb);
+
+ clear_bit(BTRFS_FS_FROZEN, &fs_info->flags);
return 0;
}
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