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| author | Martin Kaistra <martin.kaistra@linutronix.de> | 2020-07-07 13:31:59 +0300 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2020-08-02 23:23:46 +0300 |
| commit | a7a8f4a1e6b309b5365be784a07bbda1ceab2d9e (patch) | |
| tree | 6906568ee4d6f637030fb5cd8d3cc7d6eb6b64c6 /fs/ubifs/ubifs.h | |
| parent | 92ed301919932f777713b9172e525674157e983d (diff) | |
| download | linux-a7a8f4a1e6b309b5365be784a07bbda1ceab2d9e.tar.xz | |
ubifs: add option to specify version for new file systems
Instead of creating ubifs file systems with UBIFS_FORMAT_VERSION
by default, add a module parameter ubifs.default_version to allow
the user to specify the desired version. Valid values are 4 to
UBIFS_FORMAT_VERSION (currently 5).
This way, one can for example create a file system with version 4
on kernel 4.19 which can still be mounted rw when downgrading to
kernel 4.9.
Signed-off-by: Martin Kaistra <martin.kaistra@linutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs/ubifs.h')
| -rw-r--r-- | fs/ubifs/ubifs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index bff682309fbe..4ffd832e3b93 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1504,6 +1504,7 @@ extern const struct file_operations ubifs_dir_operations; extern const struct inode_operations ubifs_dir_inode_operations; extern const struct inode_operations ubifs_symlink_inode_operations; extern struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT]; +extern int ubifs_default_version; /* auth.c */ static inline int ubifs_authenticated(const struct ubifs_info *c) |