cifs: add spinlock for the openFileList to cifsInodeInfo

[tomoyo/tomoyo-test1.git] / fs / cifs / file.c

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 06e27ac..9709069 100644 (file)
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -338,10 +338,12 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
        atomic_inc(&tcon->num_local_opens);
 
        /* if readable file instance put first in list*/
+       spin_lock(&cinode->open_file_lock);
        if (file->f_mode & FMODE_READ)
                list_add(&cfile->flist, &cinode->openFileList);
        else
                list_add_tail(&cfile->flist, &cinode->openFileList);
+       spin_unlock(&cinode->open_file_lock);
        spin_unlock(&tcon->open_file_lock);
 
        if (fid->purge_cache)
@@ -413,7 +415,9 @@ void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_handler)
        cifs_add_pending_open_locked(&fid, cifs_file->tlink, &open);
 
        /* remove it from the lists */
+       spin_lock(&cifsi->open_file_lock);
        list_del(&cifs_file->flist);
+       spin_unlock(&cifsi->open_file_lock);
        list_del(&cifs_file->tlist);
        atomic_dec(&tcon->num_local_opens);
 
@@ -1950,9 +1954,9 @@ refind_writable:
                        return 0;
                }
 
-               spin_lock(&tcon->open_file_lock);
+               spin_lock(&cifs_inode->open_file_lock);
                list_move_tail(&inv_file->flist, &cifs_inode->openFileList);
-               spin_unlock(&tcon->open_file_lock);
+               spin_unlock(&cifs_inode->open_file_lock);
                cifsFileInfo_put(inv_file);
                ++refind;
                inv_file = NULL;