diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/pohmelfs/path_entry.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/staging/pohmelfs/path_entry.c b/drivers/staging/pohmelfs/path_entry.c index 8ec83d2..bbe42f4 100644 --- a/drivers/staging/pohmelfs/path_entry.c +++ b/drivers/staging/pohmelfs/path_entry.c @@ -83,10 +83,11 @@ out: int pohmelfs_path_length(struct pohmelfs_inode *pi) { struct dentry *d, *root, *first; - int len = 1; /* Root slash */ + int len; + unsigned seq; - first = d = d_find_alias(&pi->vfs_inode); - if (!d) { + first = d_find_alias(&pi->vfs_inode); + if (!first) { dprintk("%s: ino: %llu, mode: %o.\n", __func__, pi->ino, pi->vfs_inode.i_mode); return -ENOENT; } @@ -95,6 +96,11 @@ int pohmelfs_path_length(struct pohmelfs_inode *pi) root = dget(current->fs->root.dentry); spin_unlock(¤t->fs->lock); +rename_retry: + len = 1; /* Root slash */ + d = first; + seq = read_seqbegin(&rename_lock); + rcu_read_lock(); spin_lock(&dcache_lock); if (!IS_ROOT(d) && d_unhashed(d)) @@ -105,6 +111,9 @@ int pohmelfs_path_length(struct pohmelfs_inode *pi) d = d->d_parent; } spin_unlock(&dcache_lock); + rcu_read_unlock(); + if (read_seqretry(&rename_lock, seq)) + goto rename_retry; dput(root); dput(first); |
