[PATCH 0/3] fs_parser: handle parameters that can be empty and don't have a value

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While investigating an ext4/053 fstest failure, I realised that when the
flag 'fs_param_can_be_empty' is set in a parameter and it's value is NULL
that parameter isn't being handled as a 'flag' type.  Even if it's type is
set to 'fs_value_is_flag'.  The first patch in this series changes this
behaviour.

Unfortunately, the two filesystems that use this flag (ext4 and overlayfs)
aren't prepared to have the parameter value set to NULL.  Patches #2 and #3
fix this.

Luis Henriques (3):
  fs_parser: handle parameters that can be empty and don't have a value
  ext4: fix mount parameters check for empty values
  overlay: fix mount parameters check for empty values

 fs/ext4/super.c       | 4 ++--
 fs/fs_parser.c        | 3 ++-
 fs/overlayfs/params.c | 2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)





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