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-rw-r--r--fs/btrfs/extent-tree.c22
-rw-r--r--fs/btrfs/extent_map.c3
-rw-r--r--fs/btrfs/file.c25
-rw-r--r--fs/btrfs/ioctl.c5
-rw-r--r--fs/btrfs/ordered-data.c13
-rw-r--r--fs/btrfs/scrub.c25
-rw-r--r--fs/btrfs/transaction.c27
-rw-r--r--fs/btrfs/volumes.c3
-rw-r--r--fs/dlm/user.c8
-rw-r--r--fs/nfs/namespace.c20
-rw-r--r--fs/nfs/nfs4client.c62
-rw-r--r--fs/nfs/nfs4state.c22
-rw-r--r--fs/nfs/super.c22
-rw-r--r--fs/nilfs2/ioctl.c5
14 files changed, 164 insertions, 98 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index a8b8adc0507..5a3327b8f90 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4534,7 +4534,7 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
unsigned nr_extents = 0;
int extra_reserve = 0;
enum btrfs_reserve_flush_enum flush = BTRFS_RESERVE_FLUSH_ALL;
- int ret;
+ int ret = 0;
bool delalloc_lock = true;
/* If we are a free space inode we need to not flush since we will be in
@@ -4579,20 +4579,18 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
csum_bytes = BTRFS_I(inode)->csum_bytes;
spin_unlock(&BTRFS_I(inode)->lock);
- if (root->fs_info->quota_enabled) {
+ if (root->fs_info->quota_enabled)
ret = btrfs_qgroup_reserve(root, num_bytes +
nr_extents * root->leafsize);
- if (ret) {
- spin_lock(&BTRFS_I(inode)->lock);
- calc_csum_metadata_size(inode, num_bytes, 0);
- spin_unlock(&BTRFS_I(inode)->lock);
- if (delalloc_lock)
- mutex_unlock(&BTRFS_I(inode)->delalloc_mutex);
- return ret;
- }
- }
- ret = reserve_metadata_bytes(root, block_rsv, to_reserve, flush);
+ /*
+ * ret != 0 here means the qgroup reservation failed, we go straight to
+ * the shared error handling then.
+ */
+ if (ret == 0)
+ ret = reserve_metadata_bytes(root, block_rsv,
+ to_reserve, flush);
+
if (ret) {
u64 to_free = 0;
unsigned dropped;
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 2e8cae63d24..fdb7a8db3b5 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -288,7 +288,8 @@ out:
void clear_em_logging(struct extent_map_tree *tree, struct extent_map *em)
{
clear_bit(EXTENT_FLAG_LOGGING, &em->flags);
- try_merge_map(tree, em);
+ if (em->in_tree)
+ try_merge_map(tree, em);
}
/**
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index f76b1fd160d..aeb84469d2c 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -293,15 +293,24 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info,
struct btrfs_key key;
struct btrfs_ioctl_defrag_range_args range;
int num_defrag;
+ int index;
+ int ret;
/* get the inode */
key.objectid = defrag->root;
btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
key.offset = (u64)-1;
+
+ index = srcu_read_lock(&fs_info->subvol_srcu);
+
inode_root = btrfs_read_fs_root_no_name(fs_info, &key);
if (IS_ERR(inode_root)) {
- kmem_cache_free(btrfs_inode_defrag_cachep, defrag);
- return PTR_ERR(inode_root);
+ ret = PTR_ERR(inode_root);
+ goto cleanup;
+ }
+ if (btrfs_root_refs(&inode_root->root_item) == 0) {
+ ret = -ENOENT;
+ goto cleanup;
}
key.objectid = defrag->ino;
@@ -309,9 +318,10 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info,
key.offset = 0;
inode = btrfs_iget(fs_info->sb, &key, inode_root, NULL);
if (IS_ERR(inode)) {
- kmem_cache_free(btrfs_inode_defrag_cachep, defrag);
- return PTR_ERR(inode);
+ ret = PTR_ERR(inode);
+ goto cleanup;
}
+ srcu_read_unlock(&fs_info->subvol_srcu, index);
/* do a chunk of defrag */
clear_bit(BTRFS_INODE_IN_DEFRAG, &BTRFS_I(inode)->runtime_flags);
@@ -346,6 +356,10 @@ static int __btrfs_run_defrag_inode(struct btrfs_fs_info *fs_info,
iput(inode);
return 0;
+cleanup:
+ srcu_read_unlock(&fs_info->subvol_srcu, index);
+ kmem_cache_free(btrfs_inode_defrag_cachep, defrag);
+ return ret;
}
/*
@@ -1594,9 +1608,10 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
if (err < 0 && num_written > 0)
num_written = err;
}
-out:
+
if (sync)
atomic_dec(&BTRFS_I(inode)->sync_writers);
+out:
sb_end_write(inode->i_sb);
current->backing_dev_info = NULL;
return num_written ? num_written : err;
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 5b22d45d3c6..338f2597bf7 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -515,7 +515,6 @@ static noinline int create_subvol(struct btrfs_root *root,
BUG_ON(ret);
- d_instantiate(dentry, btrfs_lookup_dentry(dir, dentry));
fail:
if (async_transid) {
*async_transid = trans->transid;
@@ -525,6 +524,10 @@ fail:
}
if (err && !ret)
ret = err;
+
+ if (!ret)
+ d_instantiate(dentry, btrfs_lookup_dentry(dir, dentry));
+
return ret;
}
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index f1073129704..e5ed5672960 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -836,9 +836,16 @@ int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
* if the disk i_size is already at the inode->i_size, or
* this ordered extent is inside the disk i_size, we're done
*/
- if (disk_i_size == i_size || offset <= disk_i_size) {
+ if (disk_i_size == i_size)
+ goto out;
+
+ /*
+ * We still need to update disk_i_size if outstanding_isize is greater
+ * than disk_i_size.
+ */
+ if (offset <= disk_i_size &&
+ (!ordered || ordered->outstanding_isize <= disk_i_size))
goto out;
- }
/*
* walk backward from this ordered extent to disk_i_size.
@@ -870,7 +877,7 @@ int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
break;
if (test->file_offset >= i_size)
break;
- if (test->file_offset >= disk_i_size) {
+ if (entry_end(test) > disk_i_size) {
/*
* we don't update disk_i_size now, so record this
* undealt i_size. Or we will not know the real
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index bdbb94f245c..67783e03d12 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -580,20 +580,29 @@ static int scrub_fixup_readpage(u64 inum, u64 offset, u64 root, void *fixup_ctx)
int corrected = 0;
struct btrfs_key key;
struct inode *inode = NULL;
+ struct btrfs_fs_info *fs_info;
u64 end = offset + PAGE_SIZE - 1;
struct btrfs_root *local_root;
+ int srcu_index;
key.objectid = root;
key.type = BTRFS_ROOT_ITEM_KEY;
key.offset = (u64)-1;
- local_root = btrfs_read_fs_root_no_name(fixup->root->fs_info, &key);
- if (IS_ERR(local_root))
+
+ fs_info = fixup->root->fs_info;
+ srcu_index = srcu_read_lock(&fs_info->subvol_srcu);
+
+ local_root = btrfs_read_fs_root_no_name(fs_info, &key);
+ if (IS_ERR(local_root)) {
+ srcu_read_unlock(&fs_info->subvol_srcu, srcu_index);
return PTR_ERR(local_root);
+ }
key.type = BTRFS_INODE_ITEM_KEY;
key.objectid = inum;
key.offset = 0;
- inode = btrfs_iget(fixup->root->fs_info->sb, &key, local_root, NULL);
+ inode = btrfs_iget(fs_info->sb, &key, local_root, NULL);
+ srcu_read_unlock(&fs_info->subvol_srcu, srcu_index);
if (IS_ERR(inode))
return PTR_ERR(inode);
@@ -606,7 +615,6 @@ static int scrub_fixup_readpage(u64 inum, u64 offset, u64 root, void *fixup_ctx)
}
if (PageUptodate(page)) {
- struct btrfs_fs_info *fs_info;
if (PageDirty(page)) {
/*
* we need to write the data to the defect sector. the
@@ -3180,18 +3188,25 @@ static int copy_nocow_pages_for_inode(u64 inum, u64 offset, u64 root, void *ctx)
u64 physical_for_dev_replace;
u64 len;
struct btrfs_fs_info *fs_info = nocow_ctx->sctx->dev_root->fs_info;
+ int srcu_index;
key.objectid = root;
key.type = BTRFS_ROOT_ITEM_KEY;
key.offset = (u64)-1;
+
+ srcu_index = srcu_read_lock(&fs_info->subvol_srcu);
+
local_root = btrfs_read_fs_root_no_name(fs_info, &key);
- if (IS_ERR(local_root))
+ if (IS_ERR(local_root)) {
+ srcu_read_unlock(&fs_info->subvol_srcu, srcu_index);
return PTR_ERR(local_root);
+ }
key.type = BTRFS_INODE_ITEM_KEY;
key.objectid = inum;
key.offset = 0;
inode = btrfs_iget(fs_info->sb, &key, local_root, NULL);
+ srcu_read_unlock(&fs_info->subvol_srcu, srcu_index);
if (IS_ERR(inode))
return PTR_ERR(inode);
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index f15494699f3..fc03aa60b68 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -333,12 +333,14 @@ start_transaction(struct btrfs_root *root, u64 num_items, int type,
&root->fs_info->trans_block_rsv,
num_bytes, flush);
if (ret)
- return ERR_PTR(ret);
+ goto reserve_fail;
}
again:
h = kmem_cache_alloc(btrfs_trans_handle_cachep, GFP_NOFS);
- if (!h)
- return ERR_PTR(-ENOMEM);
+ if (!h) {
+ ret = -ENOMEM;
+ goto alloc_fail;
+ }
/*
* If we are JOIN_NOLOCK we're already committing a transaction and
@@ -365,11 +367,7 @@ again:
if (ret < 0) {
/* We must get the transaction if we are JOIN_NOLOCK. */
BUG_ON(type == TRANS_JOIN_NOLOCK);
-
- if (type < TRANS_JOIN_NOLOCK)
- sb_end_intwrite(root->fs_info->sb);
- kmem_cache_free(btrfs_trans_handle_cachep, h);
- return ERR_PTR(ret);
+ goto join_fail;
}
cur_trans = root->fs_info->running_transaction;
@@ -410,6 +408,19 @@ got_it:
if (!current->journal_info && type != TRANS_USERSPACE)
current->journal_info = h;
return h;
+
+join_fail:
+ if (type < TRANS_JOIN_NOLOCK)
+ sb_end_intwrite(root->fs_info->sb);
+ kmem_cache_free(btrfs_trans_handle_cachep, h);
+alloc_fail:
+ if (num_bytes)
+ btrfs_block_rsv_release(root, &root->fs_info->trans_block_rsv,
+ num_bytes);
+reserve_fail:
+ if (qgroup_reserved)
+ btrfs_qgroup_free(root, qgroup_reserved);
+ return ERR_PTR(ret);
}
struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 15f6efdf646..5cbb7f4b167 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1556,7 +1556,8 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
ret = 0;
/* Notify udev that device has changed */
- btrfs_kobject_uevent(bdev, KOBJ_CHANGE);
+ if (bdev)
+ btrfs_kobject_uevent(bdev, KOBJ_CHANGE);
error_brelse:
brelse(bh);
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index 7ff49852b0c..911649a47dd 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -503,11 +503,11 @@ static ssize_t device_write(struct file *file, const char __user *buf,
#endif
return -EINVAL;
-#ifdef CONFIG_COMPAT
- if (count > sizeof(struct dlm_write_request32) + DLM_RESNAME_MAXLEN)
-#else
+ /*
+ * can't compare against COMPAT/dlm_write_request32 because
+ * we don't yet know if is64bit is zero
+ */
if (count > sizeof(struct dlm_write_request) + DLM_RESNAME_MAXLEN)
-#endif
return -EINVAL;
kbuf = kzalloc(count + 1, GFP_NOFS);
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index dd057bc6b65..fc8dc20fdeb 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -177,11 +177,31 @@ out_nofree:
return mnt;
}
+static int
+nfs_namespace_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
+{
+ if (NFS_FH(dentry->d_inode)->size != 0)
+ return nfs_getattr(mnt, dentry, stat);
+ generic_fillattr(dentry->d_inode, stat);
+ return 0;
+}
+
+static int
+nfs_namespace_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ if (NFS_FH(dentry->d_inode)->size != 0)
+ return nfs_setattr(dentry, attr);
+ return -EACCES;
+}
+
const struct inode_operations nfs_mountpoint_inode_operations = {
.getattr = nfs_getattr,
+ .setattr = nfs_setattr,
};
const struct inode_operations nfs_referral_inode_operations = {
+ .getattr = nfs_namespace_getattr,
+ .setattr = nfs_namespace_setattr,
};
static void nfs_expire_automounts(struct work_struct *work)
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index acc34726812..2e9779b58b7 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -236,11 +236,10 @@ struct nfs_client *nfs4_init_client(struct nfs_client *clp,
error = nfs4_discover_server_trunking(clp, &old);
if (error < 0)
goto error;
+ nfs_put_client(clp);
if (clp != old) {
clp->cl_preserve_clid = true;
- nfs_put_client(clp);
clp = old;
- atomic_inc(&clp->cl_count);
}
return clp;
@@ -306,7 +305,7 @@ int nfs40_walk_client_list(struct nfs_client *new,
.clientid = new->cl_clientid,
.confirm = new->cl_confirm,
};
- int status;
+ int status = -NFS4ERR_STALE_CLIENTID;
spin_lock(&nn->nfs_client_lock);
list_for_each_entry_safe(pos, n, &nn->nfs_client_list, cl_share_link) {
@@ -332,40 +331,33 @@ int nfs40_walk_client_list(struct nfs_client *new,
if (prev)
nfs_put_client(prev);
+ prev = pos;
status = nfs4_proc_setclientid_confirm(pos, &clid, cred);
- if (status == 0) {
+ switch (status) {
+ case -NFS4ERR_STALE_CLIENTID:
+ break;
+ case 0:
nfs4_swap_callback_idents(pos, new);
- nfs_put_client(pos);
+ prev = NULL;
*result = pos;
dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
__func__, pos, atomic_read(&pos->cl_count));
- return 0;
- }
- if (status != -NFS4ERR_STALE_CLIENTID) {
- nfs_put_client(pos);
- dprintk("NFS: <-- %s status = %d, no result\n",
- __func__, status);
- return status;
+ default:
+ goto out;
}
spin_lock(&nn->nfs_client_lock);
- prev = pos;
}
+ spin_unlock(&nn->nfs_client_lock);
- /*
- * No matching nfs_client found. This should be impossible,
- * because the new nfs_client has already been added to
- * nfs_client_list by nfs_get_client().
- *
- * Don't BUG(), since the caller is holding a mutex.
- */
+ /* No match found. The server lost our clientid */
+out:
if (prev)
nfs_put_client(prev);
- spin_unlock(&nn->nfs_client_lock);
- pr_err("NFS: %s Error: no matching nfs_client found\n", __func__);
- return -NFS4ERR_STALE_CLIENTID;
+ dprintk("NFS: <-- %s status = %d\n", __func__, status);
+ return status;
}
#ifdef CONFIG_NFS_V4_1
@@ -432,7 +424,7 @@ int nfs41_walk_client_list(struct nfs_client *new,
{
struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id);
struct nfs_client *pos, *n, *prev = NULL;
- int error;
+ int status = -NFS4ERR_STALE_CLIENTID;
spin_lock(&nn->nfs_client_lock);
list_for_each_entry_safe(pos, n, &nn->nfs_client_list, cl_share_link) {
@@ -448,14 +440,17 @@ int nfs41_walk_client_list(struct nfs_client *new,
nfs_put_client(prev);
prev = pos;
- error = nfs_wait_client_init_complete(pos);
- if (error < 0) {
+ nfs4_schedule_lease_recovery(pos);
+ status = nfs_wait_client_init_complete(pos);
+ if (status < 0) {
nfs_put_client(pos);
spin_lock(&nn->nfs_client_lock);
continue;
}
-
+ status = pos->cl_cons_state;
spin_lock(&nn->nfs_client_lock);
+ if (status < 0)
+ continue;
}
if (pos->rpc_ops != new->rpc_ops)
@@ -473,6 +468,7 @@ int nfs41_walk_client_list(struct nfs_client *new,
if (!nfs4_match_serverowners(pos, new))
continue;
+ atomic_inc(&pos->cl_count);
spin_unlock(&nn->nfs_client_lock);
dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
__func__, pos, atomic_read(&pos->cl_count));
@@ -481,16 +477,10 @@ int nfs41_walk_client_list(struct nfs_client *new,
return 0;
}
- /*
- * No matching nfs_client found. This should be impossible,
- * because the new nfs_client has already been added to
- * nfs_client_list by nfs_get_client().
- *
- * Don't BUG(), since the caller is holding a mutex.
- */
+ /* No matching nfs_client found. */
spin_unlock(&nn->nfs_client_lock);
- pr_err("NFS: %s Error: no matching nfs_client found\n", __func__);
- return -NFS4ERR_STALE_CLIENTID;
+ dprintk("NFS: <-- %s status = %d\n", __func__, status);
+ return status;
}
#endif /* CONFIG_NFS_V4_1 */
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 9448c579d41..e61f68d5ef2 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -136,16 +136,11 @@ int nfs40_discover_server_trunking(struct nfs_client *clp,
clp->cl_confirm = clid.confirm;
status = nfs40_walk_client_list(clp, result, cred);
- switch (status) {
- case -NFS4ERR_STALE_CLIENTID:
- set_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
- case 0:
+ if (status == 0) {
/* Sustain the lease, even if it's empty. If the clientid4
* goes stale it's of no use for trunking discovery. */
nfs4_schedule_state_renewal(*result);
- break;
}
-
out:
return status;
}
@@ -1863,6 +1858,7 @@ again:
case -ETIMEDOUT:
case -EAGAIN:
ssleep(1);
+ case -NFS4ERR_STALE_CLIENTID:
dprintk("NFS: %s after status %d, retrying\n",
__func__, status);
goto again;
@@ -2022,8 +2018,18 @@ static int nfs4_reset_session(struct nfs_client *clp)
nfs4_begin_drain_session(clp);
cred = nfs4_get_exchange_id_cred(clp);
status = nfs4_proc_destroy_session(clp->cl_session, cred);
- if (status && status != -NFS4ERR_BADSESSION &&
- status != -NFS4ERR_DEADSESSION) {
+ switch (status) {
+ case 0:
+ case -NFS4ERR_BADSESSION:
+ case -NFS4ERR_DEADSESSION:
+ break;
+ case -NFS4ERR_BACK_CHAN_BUSY:
+ case -NFS4ERR_DELAY:
+ set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
+ status = 0;
+ ssleep(1);
+ goto out;
+ default:
status = nfs4_recovery_handle_error(clp, status);
goto out;
}
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 2e7e8c878e5..b056b162872 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2589,27 +2589,23 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags,
struct nfs_server *server;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
struct nfs_subversion *nfs_mod = NFS_SB(data->sb)->nfs_client->cl_nfs_mod;
- int error;
- dprintk("--> nfs_xdev_mount_common()\n");
+ dprintk("--> nfs_xdev_mount()\n");
mount_info.mntfh = mount_info.cloned->fh;
/* create a new volume representation */
server = nfs_mod->rpc_ops->clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
- if (IS_ERR(server)) {
- error = PTR_ERR(server);
- goto out_err;
- }
- mntroot = nfs_fs_mount_common(server, flags, dev_name, &mount_info, nfs_mod);
- dprintk("<-- nfs_xdev_mount_common() = 0\n");
-out:
- return mntroot;
+ if (IS_ERR(server))
+ mntroot = ERR_CAST(server);
+ else
+ mntroot = nfs_fs_mount_common(server, flags,
+ dev_name, &mount_info, nfs_mod);
-out_err:
- dprintk("<-- nfs_xdev_mount_common() = %d [error]\n", error);
- goto out;
+ dprintk("<-- nfs_xdev_mount() = %ld\n",
+ IS_ERR(mntroot) ? PTR_ERR(mntroot) : 0L);
+ return mntroot;
}
#if IS_ENABLED(CONFIG_NFS_V4)
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index fdb18076948..f3859354e41 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -664,8 +664,11 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
if (ret < 0)
printk(KERN_ERR "NILFS: GC failed during preparation: "
"cannot read source blocks: err=%d\n", ret);
- else
+ else {
+ if (nilfs_sb_need_update(nilfs))
+ set_nilfs_discontinued(nilfs);
ret = nilfs_clean_segments(inode->i_sb, argv, kbufs);
+ }
nilfs_remove_all_gcinodes(nilfs);
clear_nilfs_gc_running(nilfs);