summaryrefslogtreecommitdiff
path: root/fs/nilfs2/super.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/nilfs2/super.c')
-rw-r--r--fs/nilfs2/super.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index d57c42f974ea..6522cac6057c 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -677,7 +677,6 @@ static const struct super_operations nilfs_sops = {
.destroy_inode = nilfs_destroy_inode,
.dirty_inode = nilfs_dirty_inode,
/* .write_inode = nilfs_write_inode, */
- /* .put_inode = nilfs_put_inode, */
/* .drop_inode = nilfs_drop_inode, */
.evict_inode = nilfs_evict_inode,
.put_super = nilfs_put_super,
@@ -685,8 +684,6 @@ static const struct super_operations nilfs_sops = {
.sync_fs = nilfs_sync_fs,
.freeze_fs = nilfs_freeze,
.unfreeze_fs = nilfs_unfreeze,
- /* .write_super_lockfs */
- /* .unlockfs */
.statfs = nilfs_statfs,
.remount_fs = nilfs_remount,
/* .umount_begin */
@@ -948,6 +945,8 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
struct nilfs_root *root;
int ret;
+ mutex_lock(&nilfs->ns_snapshot_mount_mutex);
+
down_read(&nilfs->ns_segctor_sem);
ret = nilfs_cpfile_is_snapshot(nilfs->ns_cpfile, cno);
up_read(&nilfs->ns_segctor_sem);
@@ -972,6 +971,7 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
ret = nilfs_get_root_dentry(s, root, root_dentry);
nilfs_put_root(root);
out:
+ mutex_unlock(&nilfs->ns_snapshot_mount_mutex);
return ret;
}