diff options
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/nfs/exporting.rst | 7 | ||||
| -rw-r--r-- | Documentation/filesystems/porting.rst | 9 |
2 files changed, 11 insertions, 5 deletions
diff --git a/Documentation/filesystems/nfs/exporting.rst b/Documentation/filesystems/nfs/exporting.rst index 198d805d611c..f04ce1215a03 100644 --- a/Documentation/filesystems/nfs/exporting.rst +++ b/Documentation/filesystems/nfs/exporting.rst @@ -122,12 +122,9 @@ are exportable by setting the s_export_op field in the struct super_block. This field must point to a "struct export_operations" struct which has the following members: - encode_fh (optional) + encode_fh (mandatory) Takes a dentry and creates a filehandle fragment which may later be used - to find or create a dentry for the same object. The default - implementation creates a filehandle fragment that encodes a 32bit inode - and generation number for the inode encoded, and if necessary the - same information for the parent. + to find or create a dentry for the same object. fh_to_dentry (mandatory) Given a filehandle fragment, this should find the implied object and diff --git a/Documentation/filesystems/porting.rst b/Documentation/filesystems/porting.rst index d69f59700a23..878e72b2f8b7 100644 --- a/Documentation/filesystems/porting.rst +++ b/Documentation/filesystems/porting.rst @@ -1052,3 +1052,12 @@ kill_anon_super(), or kill_block_super() helpers. Lock ordering has been changed so that s_umount ranks above open_mutex again. All places where s_umount was taken under open_mutex have been fixed up. + +--- + +**mandatory** + +export_operations ->encode_fh() no longer has a default implementation to +encode FILEID_INO32_GEN* file handles. +Filesystems that used the default implementation may use the generic helper +generic_encode_ino32_fh() explicitly. |