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Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c80
1 files changed, 38 insertions, 42 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 3536bdb2d7cb..9f179d4832d5 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -52,7 +52,6 @@
#include "export.h"
#include "compression.h"
-
static struct super_operations btrfs_super_ops;
static void btrfs_put_super(struct super_block *sb)
@@ -67,8 +66,8 @@ static void btrfs_put_super(struct super_block *sb)
enum {
Opt_degraded, Opt_subvol, Opt_device, Opt_nodatasum, Opt_nodatacow,
Opt_max_extent, Opt_max_inline, Opt_alloc_start, Opt_nobarrier,
- Opt_ssd, Opt_thread_pool, Opt_noacl, Opt_compress, Opt_notreelog,
- Opt_ratio, Opt_flushoncommit, Opt_err,
+ Opt_ssd, Opt_nossd, Opt_ssd_spread, Opt_thread_pool, Opt_noacl,
+ Opt_compress, Opt_notreelog, Opt_ratio, Opt_flushoncommit, Opt_err,
};
static match_table_t tokens = {
@@ -84,6 +83,8 @@ static match_table_t tokens = {
{Opt_thread_pool, "thread_pool=%d"},
{Opt_compress, "compress"},
{Opt_ssd, "ssd"},
+ {Opt_ssd_spread, "ssd_spread"},
+ {Opt_nossd, "nossd"},
{Opt_noacl, "noacl"},
{Opt_notreelog, "notreelog"},
{Opt_flushoncommit, "flushoncommit"},
@@ -158,7 +159,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
*/
break;
case Opt_nodatasum:
- printk(KERN_INFO "btrfs: setting nodatacsum\n");
+ printk(KERN_INFO "btrfs: setting nodatasum\n");
btrfs_set_opt(info->mount_opt, NODATASUM);
break;
case Opt_nodatacow:
@@ -174,6 +175,19 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
printk(KERN_INFO "btrfs: use ssd allocation scheme\n");
btrfs_set_opt(info->mount_opt, SSD);
break;
+ case Opt_ssd_spread:
+ printk(KERN_INFO "btrfs: use spread ssd "
+ "allocation scheme\n");
+ btrfs_set_opt(info->mount_opt, SSD);
+ btrfs_set_opt(info->mount_opt, SSD_SPREAD);
+ break;
+ case Opt_nossd:
+ printk(KERN_INFO "btrfs: not using ssd allocation "
+ "scheme\n");
+ btrfs_set_opt(info->mount_opt, NOSSD);
+ btrfs_clear_opt(info->mount_opt, SSD);
+ btrfs_clear_opt(info->mount_opt, SSD_SPREAD);
+ break;
case Opt_nobarrier:
printk(KERN_INFO "btrfs: turning off barriers\n");
btrfs_set_opt(info->mount_opt, NOBARRIER);
@@ -322,7 +336,7 @@ static int btrfs_fill_super(struct super_block *sb,
struct dentry *root_dentry;
struct btrfs_super_block *disk_super;
struct btrfs_root *tree_root;
- struct btrfs_inode *bi;
+ struct btrfs_key key;
int err;
sb->s_maxbytes = MAX_LFS_FILESIZE;
@@ -341,23 +355,15 @@ static int btrfs_fill_super(struct super_block *sb,
}
sb->s_fs_info = tree_root;
disk_super = &tree_root->fs_info->super_copy;
- inode = btrfs_iget_locked(sb, BTRFS_FIRST_FREE_OBJECTID,
- tree_root->fs_info->fs_root);
- bi = BTRFS_I(inode);
- bi->location.objectid = inode->i_ino;
- bi->location.offset = 0;
- bi->root = tree_root->fs_info->fs_root;
-
- btrfs_set_key_type(&bi->location, BTRFS_INODE_ITEM_KEY);
- if (!inode) {
- err = -ENOMEM;
+ key.objectid = BTRFS_FIRST_FREE_OBJECTID;
+ key.type = BTRFS_INODE_ITEM_KEY;
+ key.offset = 0;
+ inode = btrfs_iget(sb, &key, tree_root->fs_info->fs_root);
+ if (IS_ERR(inode)) {
+ err = PTR_ERR(inode);
goto fail_close;
}
- if (inode->i_state & I_NEW) {
- btrfs_read_locked_inode(inode);
- unlock_new_inode(inode);
- }
root_dentry = d_alloc_root(inode);
if (!root_dentry) {
@@ -388,10 +394,6 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
struct btrfs_root *root = btrfs_sb(sb);
int ret;
- if (sb->s_flags & MS_RDONLY)
- return 0;
-
- sb->s_dirt = 0;
if (!wait) {
filemap_flush(root->fs_info->btree_inode->i_mapping);
return 0;
@@ -402,7 +404,6 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
trans = btrfs_start_transaction(root, 1);
ret = btrfs_commit_transaction(trans, root);
- sb->s_dirt = 0;
return ret;
}
@@ -433,22 +434,21 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_printf(seq, ",thread_pool=%d", info->thread_pool_size);
if (btrfs_test_opt(root, COMPRESS))
seq_puts(seq, ",compress");
- if (btrfs_test_opt(root, SSD))
+ if (btrfs_test_opt(root, NOSSD))
+ seq_puts(seq, ",nossd");
+ if (btrfs_test_opt(root, SSD_SPREAD))
+ seq_puts(seq, ",ssd_spread");
+ else if (btrfs_test_opt(root, SSD))
seq_puts(seq, ",ssd");
if (btrfs_test_opt(root, NOTREELOG))
- seq_puts(seq, ",no-treelog");
+ seq_puts(seq, ",notreelog");
if (btrfs_test_opt(root, FLUSHONCOMMIT))
- seq_puts(seq, ",flush-on-commit");
+ seq_puts(seq, ",flushoncommit");
if (!(root->fs_info->sb->s_flags & MS_POSIXACL))
seq_puts(seq, ",noacl");
return 0;
}
-static void btrfs_write_super(struct super_block *sb)
-{
- sb->s_dirt = 0;
-}
-
static int btrfs_test_super(struct super_block *s, void *data)
{
struct btrfs_fs_devices *test_fs_devices = data;
@@ -502,8 +502,7 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
if (s->s_root) {
if ((flags ^ s->s_flags) & MS_RDONLY) {
- up_write(&s->s_umount);
- deactivate_super(s);
+ deactivate_locked_super(s);
error = -EBUSY;
goto error_close_devices;
}
@@ -517,8 +516,7 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
error = btrfs_fill_super(s, fs_devices, data,
flags & MS_SILENT ? 1 : 0);
if (error) {
- up_write(&s->s_umount);
- deactivate_super(s);
+ deactivate_locked_super(s);
goto error_free_subvol_name;
}
@@ -535,15 +533,13 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
mutex_unlock(&s->s_root->d_inode->i_mutex);
if (IS_ERR(root)) {
- up_write(&s->s_umount);
- deactivate_super(s);
+ deactivate_locked_super(s);
error = PTR_ERR(root);
goto error_free_subvol_name;
}
if (!root->d_inode) {
dput(root);
- up_write(&s->s_umount);
- deactivate_super(s);
+ deactivate_locked_super(s);
error = -ENXIO;
goto error_free_subvol_name;
}
@@ -588,7 +584,8 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
if (btrfs_super_log_root(&root->fs_info->super_copy) != 0)
return -EINVAL;
- ret = btrfs_cleanup_reloc_trees(root);
+ /* recover relocation */
+ ret = btrfs_recover_relocation(root);
WARN_ON(ret);
ret = btrfs_cleanup_fs_roots(root->fs_info);
@@ -682,7 +679,6 @@ static int btrfs_unfreeze(struct super_block *sb)
static struct super_operations btrfs_super_ops = {
.delete_inode = btrfs_delete_inode,
.put_super = btrfs_put_super,
- .write_super = btrfs_write_super,
.sync_fs = btrfs_sync_fs,
.show_options = btrfs_show_options,
.write_inode = btrfs_write_inode,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.