NFS: Don't ignore errors from nfs_do_filldir()

We should ignore the errors from the filldir callback, and just interpret
them as meaning we should exit, however we should definitely pass back
ENOMEM errors.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 2492bac..ddc2e43 100644 (file)
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -709,13 +709,15 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
        }
 
        for (i = desc->cache_entry_index; i < array->size; i++) {
+               struct nfs_cache_array_entry *ent;
                d_type = DT_UNKNOWN;
 
-               res = filldir(dirent, array->array[i].string.name,
-                       array->array[i].string.len, file->f_pos,
-                       nfs_compat_user_ino64(array->array[i].ino), d_type);
-               if (res < 0)
+               ent = &array->array[i];
+               if (filldir(dirent, ent->string.name, ent->string.len,
+                   file->f_pos, nfs_compat_user_ino64(ent->ino), d_type) < 0) {
+                       desc->eof = 1;
                        break;
+               }
                file->f_pos++;
                desc->cache_entry_index = i;
                if (i < (array->size-1))
@@ -820,14 +822,14 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
                res = readdir_search_pagecache(desc);
 
                if (res == -EBADCOOKIE) {
+                       res = 0;
                        /* This means either end of directory */
                        if (*desc->dir_cookie && desc->eof == 0) {
                                /* Or that the server has 'lost' a cookie */
                                res = uncached_readdir(desc, dirent, filldir);
-                               if (res >= 0)
+                               if (res == 0)
                                        continue;
                        }
-                       res = 0;
                        break;
                }
                if (res == -ETOOSMALL && desc->plus) {
@@ -842,10 +844,8 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
                        break;
 
                res = nfs_do_filldir(desc, dirent, filldir);
-               if (res < 0) {
-                       res = 0;
+               if (res < 0)
                        break;
-               }
        }
 out:
        nfs_unblock_sillyrename(dentry);