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Diffstat (limited to 'Documentation/filesystems/porting.rst')
| -rw-r--r-- | Documentation/filesystems/porting.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/filesystems/porting.rst b/Documentation/filesystems/porting.rst index 41d964b48..9100969e7 100644 --- a/Documentation/filesystems/porting.rst +++ b/Documentation/filesystems/porting.rst @@ -1050,6 +1050,22 @@ kill_anon_super(), or kill_block_super() helpers. **mandatory** +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. + +--- + +**mandatory** + If ->rename() update of .. on cross-directory move needs an exclusion with directory modifications, do *not* lock the subdirectory in question in your ->rename() - it's done by the caller now [that item should've been added in |