[CIFS] Fix readdir breakage when blocksize set too small

Do not treat filldir running out of space as an error that needs
to be returned.

Fixes Redhat bugzilla bug # 211070

Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index b5b0a2a41bef..ed18c3965f7b 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -896,6 +896,10 @@ static int cifs_filldir(char *pfindEntry, struct file *file,
                      tmp_inode->i_ino,obj_type);
         if(rc) {
                 cFYI(1,("filldir rc = %d",rc));
+                /* we can not return filldir errors to the caller
+                since they are "normal" when the stat blocksize
+                is too small - we return remapped error instead */
+                rc = -EOVERFLOW;
         }
 
         dput(tmp_dentry);
@@ -1074,6 +1078,11 @@ int cifs_readdir(struct file *file, void *direntry, filldir_t filldir)
                         we want to check for that here? */
                         rc = cifs_filldir(current_entry, file,
                                         filldir, direntry, tmp_buf, max_len);
+                        if(rc == -EOVERFLOW) {
+                                rc = 0;
+                                break;
+                        }
+
                         file->f_pos++;
                         if(file->f_pos == 
                                 cifsFile->srch_inf.index_of_last_entry) {